By what mechanism does caffeine most likely enhance endurance performance?
a. Enhances mobilization and oxidation of free fatty acids
b. Uses fatty acids and thus spares muscle glycogen
c. Decreases the perception of fatigue
d. a and b
e. all of the above
Answers
The most likely mechanism that caffeine enhances endurance performance is: d. Enhances mobilization and oxidation of free fatty acids, and uses fatty acids and thus spares muscle glycogen.
Caffeine is a well-known ergogenic aid that enhances endurance performance. Caffeine works by stimulating the central nervous system and reducing fatigue perception, increasing muscle contractility and reducing pain. Moreover, caffeine increases the mobilization and oxidation of free fatty acids (FFA) while sparing muscle glycogen during prolonged exercise.
The primary way caffeine enhances endurance performance is through its ability to increase the mobilization and oxidation of free fatty acids (FFA) while sparing muscle glycogen during prolonged exercise. The enhanced mobilization of fatty acids is due to the ability of caffeine to stimulate the adrenal glands, which release epinephrine, which in turn increases the release of fatty acids from adipose tissue into the bloodstream.
As a result, there is a greater availability of FFA for oxidation by working muscles, which results in a reduced reliance on muscle glycogen during prolonged exercise.
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Related Questions
The arrows point to the genetic material in each type of cell. What is different about how it’s stored in each type of cell? Is it organized? Can it be found in one small area?
Answers
Answer:The nucleus
The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
Explanation:These cells are different because they use the same set of genes differently. So even though each of our cells has the same 20,000 or so genes, each cell can select which ones it wants to “turn on” and which ones it wants to keep “turned off”.
Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it completely and throws Sheila forward onto the pavement. If there is no net force on the system, what is Sheila’s velocity immediately after she is thrown from the bike?
Answers
Answer:
5.7 m/s
Explanation:
The computation of Sheila 's velocity right after she gets thrown out of the bike is shown below:
1) The Physical principle: conservation of momentum.
If there is no net external force operating on a system, so the system's total momentum is conserved
The momentum, p, is a vector magnitude that is determined as the product of the mass by the velocity:
P = mv.
2) Taking into account therefore that there is no net force on the device, Sheila and the momentum of the bike are the identical pre and post collision.
Based on this, the calculation is as follows
Momentum before the collision:
\(P_1 = (mass\ of\ Sheila + mass\ of\ the\ bike) \times velocity\)
\(P_1 = (60kg + m) \times v_1\)
= 340 kg m/s
Now Momentum after the collision:
\(P_2 = mass\ of\ sheila \times velocity\ of\ Sheila + mass\ of\ the\ bike \times velocity\ of\ the\ bike\)
\(P_2 = 60kg \times v_2 + m \times 0 = 60kg \times v_2\)
\(P_1 = P_2\)
\(= (60kg + m) \times v_1\)
\(= 60kg \times v_2\)
\(= 340 kg .\ m/s\)
\(= 60kg \times v_2\)
\(v_2 = \frac{340\ kg .\ m/s }{60\ kg}\)
= 5.7 m/s
The velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.
The given parameters;
mass of Sheila, m = 60 kgmomentum of Sheila, P = 340 kg.m/sThe velocity of Sheila immediately after she is thrown from the bike is calculated as follows;
P = mv
where;
v is the velocity Sheila
\(v = \frac{P}{m} \\\\v = \frac{340}{60} \\\\v = 5.67 \ m/s\)
Thus, the velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.
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Explain why the use of peat is harmful to the environment
Answers
Answer:
Peatlands store a third of the world's soil carbon, and their harvesting and use releases carbon dioxide, the major greenhouse gas driving climate change. The biggest environmental risk from peatlands is if they catch fire, which happened spectacularly in 2015 in Indonesia on land cleared for plantations.
It is found that many insecticides - used to kill insects - lose their effectiveness after some years. What could be the cause of this?
A) The insecticides are equally effective - such myths are spread by manufacturers so that they can sell more.
B) The species targeted by the insecticide are destroyed, but new insects which are unaffected, are born.
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
D)The atmosphere contains so much of the insecticide that humans start being poisoned by it.
Answers
Answer:
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
Explanation:
It's called adaptation.
Answer:
normally, insecticides last for over 4 to 5 years before breaking into microbes, the species targeted are destroyed. A should be the answer
Keshaun measures the force of objects with different masses using a spring scale. keshaun pulls each object a distance of 0.5 meters. the table shows his data.
mass of object (grams) force (newtons)
5 2
7 4
10 6
based on his data, how is the acceleration of an object maintained as the mass of an object increases?
Answers
As the mass of the object is increased, the force applied to the object increases to maintain the acceleration of the object.
Acceleration of the objects
The acceleration of the objects is determined from Newton's second law of motion as follows;
F = ma
a = F/m
for mass of 5 kg and force of 2 Na = 2/5 = 0.4 m/s²
for mass of 7 kg and force of 4 Na = 4/7 = 0.57 m/s²
for mass of 10 kg and force of 6 Na = 6/10 = 0.6 m/s²
Thus, from the data above we can conclude that, as the mass of the object is increased, the force applied to the object increases to maintain the acceleration of the object.
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NEED HELP ASAP ILL GIVE 100 POINTS!!!
Pre-Lab Information
Purpose Plan an investigation to examine how heart rate changes during and after an exercise is
performed for two different periods of time.
Time Approximately 60 minutes
Question How does heart rate change during and after an exercise is performed for two different
periods of time?
Hypothesis In the space below, develop a hypothesis that will test the question.
Summary In this experiment, you will work with a partner to measure each other’s heart rate before
and after exercise. You will start by determining each other’s resting heart rate. Then, you
will do an exercise for a specific amount of time, measure each other’s heart rate
afterward, and then determine each other’s recovery period. You will then repeat this
procedure with the same exercise but for a longer period of time. You will choose the
type of exercise performed during the experiment as well as the two durations of time.
Student Guide (continued)
Background Information
It is time to get you thinking about the effects of exercise on heart rate. The experiment you will devise
should examine the changes in heart rate after an exercise is performed for two different periods of time.
You and your partner will need to determine each other’s heart rate before and after exercise as well as
each other’s recovery period. Your teacher will let you know what materials are available. You and your
partner should plan your investigation around these.
To find your heart rate, use the tips of your index and middle fingers to press lightly over the blood
vessels in your wrist or neck. Depending on the individual, sometimes one area is better for feeling pulse
than the other. Count your pulse for ten seconds. Multiply the number of pulses by six to find your number
of beats per minute.
Lab Procedure
Here is an outline of the steps you should follow to plan your investigation for this lab. Later in the guide,
you will have space to develop your ideas, collect data, analyze and discuss results, and draw
conclusions.
Step 1: Determine the types of data you will gather and the tools of measurement you will use to
collect the data.
How will you gather data for your experiment? If gathering quantitative data, you may want to
devise a table in which you can record your results in an organized manner. Also, consider how
you will record any qualitative or descriptive data in addition to your numerical results. You
should use a pencil to record data.
Step 2: Devise an experiment to examine the effects of exercise on heart rate for two different
periods of time.
Develop the main steps and describe how you will run the experiment. Your teacher will guide
you on what materials are available for your experiment.
Step 3: Stop. Have your teacher sign off on Steps 1 and 2 before you continue the investigation.
Step 4: Gather materials and set up your experiment.
Now that you know what you will do, gather the necessary items. Besides the objects you will
experiment with, make sure you have the necessary equipment to take measurements. If you
are working with lab partners, make sure each person knows his or her role in running the
experiment. Check your setup and make sure everything is in order before you proceed.
Step 5: Run your experiment.
As you proceed with your experiment, make sure you record all the necessary data and, if
working in groups, the role each student performed during the experiment. Make sure all
elements of your experiment are complete. Do not forget to clean up when you are done!
Step 6: Use the High School Lab Report Guide to write your lab report.
Student Guide (continued)
Examine the effects of exercise on heart rate for two different periods
of time.
Step 1: Determine the types of data you will gather and the tools of measurement you will use to
collect the data.
Make a list of the type of data you plan to collect. If gathering quantitative data, you may want to
devise a table in which you can record your results in an organized manner.
Student Guide (continued)
Step 2: Devise an experiment to examine the effects of exercise on heart rate for two different
periods of time.
Write the steps of your experiment.
Step 3: Stop. Have your teacher sign off on Steps 1 and 2 before continuing the investigation.
Student Guide (continued)
Step 4: Gather materials and set up your experiment.
Gather the necessary items and equipment. If you are working with lab partners, make sure
each person knows his or her role in running the experiment. Document the roles here.
Student Name Role
Student Guide (continued)
Step 5: Run your experiment.
Record your data and observations in the space below. Do not forget to clean up when you are
done!
Step 6: Use the High School Lab Report Guide to write your lab report
Answers
To plan your investigation, you can take the following steps:
Step 1: Determine the measurement instruments you will use to collect the data and the types of data you will collect.
What are the further steps to measure the Heart Rate?Step 2: Create an experiment to see how exercise affects heart rate over two different time periods.
Step 3: Before moving forward with the investigation, have your teacher sign off on Steps 1 and 2.
Step 4: Set up your experiment and gather the necessary items.
Step 5: Conduct the experiment.
Follow the plan for the exercises and measure your heart rate before and after each one. In the table you created in step 1, enter your information.
Step 6: Write your lab report using the High School Lab Report Guide.
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To plan your investigation, Determine on the data types you will gather and the measurement tools you will use to collect the data.
What additional procedures are needed to measure heart rate?Step 1: Decide on the data types you will gather and the measurement tools you will use to collect the data.
Step 2: Make an experiment to examine the impact of exercise on heart rate over two time spans.
Step 3: Have your teacher approve Steps 1 and 2 before continuing the research.
Step 4: Gather the required materials and set up your experiment.
Step 5: Carry out the investigation.
Measure your heart rate before and after each workout as directed, and stick to the plan. Enter your data in the spreadsheet you made in step one.
Step 6: Use the High School test Report Guide to write your test report.
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How would siamangs be affected if the rain forests they live in
produced less fruit?
Answers
Their population will decline.
What are siamangs?Siamangs are a type of gibbon. They are found in certain parts of the world which include Indonesia, Thailand, etc.
The main diets of siamangs are fruits and leaves. Occasionally, they feed on insects and small invertebrates.
Since their diet is largely fruit-based, if the rainforests that these animals live in produce less fruit, they will have to adjust in order to specialize in other foods or risk famine.
Whatever the case may be, a decline in fruit production by the forest will initially affect the population of the animal.
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Without knowing that these genes are on the same chromosome, how would you interpret the results of this cross
Answers
50% of the offspring will exhibit crossover traits. These are the same as the results of a cross in which chromosomes A and B were not together.
what is a chromosome?The thread-like components known as chromosomes are found in the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA). DNA is passed down from parents to children and contains the precise instructions that give each kind of living thing its individuality.
Which of the four chromosomal kinds are they?Chromosomes are divided into four groups based on where the centromere is located: metacentric, submetacentric, acrocentric, and telocentric.
Are there 22 or 23 chromosomes in humans?The average human has 46 chromosomes, or 23 pairs of chromosomes. All of the genes in the human body are found on long strands of DNA called chromosomes.
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a) how can genetic change (through gene transfer, mutation, evolution, etc.) yield natural selection and adaption?
(b) Choose one such method of genetic change and explain the method and how it might lead to speciation and/or specific growth advantages in an environment.
Answers
(a) Genetic change can lead to natural selection and adaptation because certain genetic variations may give an individual an advantage in their environment, allowing them to survive and reproduce more successfully than others. These advantageous traits are then passed down to future generations, leading to a shift in the genetic makeup of a population over time.
(b) One example of genetic change is mutation. Mutations are changes in DNA that can occur randomly or as a result of environmental factors such as radiation or exposure to chemicals. Some mutations can result in a growth advantage, such as resistance to a particular disease or the ability to digest a new food source. Over time, these advantageous mutations can accumulate in a population, leading to speciation, or the development of a new species. For example, if a group of individuals with a certain mutation that allows them to survive better in a new environment becomes isolated from the rest of the population, they may eventually evolve into a distinct species with different genetic traits than their original population. Additionally, mutations can also lead to specific growth advantages in an environment. For instance, a mutation that allows a plant to use water more efficiently could lead to better growth and survival in a drought-prone area, giving it a competitive advantage over other plants in the same environment.
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(a) Natural selection and adaptation can result from genetic change because some genetic differences may provide a person an advantage in their environment, enabling them to live and reproduce more effectively than others.
(b) Mutation is an illustration of genetic change. Mutations are DNA alterations that can happen by chance or as a result of exposure to chemicals or radiation from the environment.
A population's genetic composition changes throughout time as a result of these beneficial features being handed down to succeeding generations. Some mutations, such the capacity to digest a novel food source or disease resistance, might provide an organism a growth advantage. These favorable mutations may build up in a population over time, resulting in speciation.
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When an atom becomes a compound, a ________ forms. a. Bond b. Electron c. Neutron d. Oxygen
Answers
Answer:
a bond forms
Explanation:
Mendel considered those traits that were hidden in the first generation to be
Answers
Answer: Mendel considered traits hidden in the first generation to be recessive.
Explanation: Recessive traits, in order to be expressed in an organism's phenotype (physical characteristics) must be homozygous. This means that in a monohybrid cross, which means a trait with only one gene, (E.g. Aa, aa, AA) in order for a recessive gene to be expressed it must be combined with itself. (Examples include aa, bb, cc,)
Which equipment is best to hold and to measure liquids
Answers
Explanation:
Beakers are the standard vessel used in chemistry. They come in all sizes including 5 milliliter (ml) flasks and flasks of many liters (L). Much like a cup or a mug, they consist of a cylinder, usually glass, with a flat bottom made to hold liquid. Beakers may or may not have a pour spout although they usually do.
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A poison is injected directly into tracheids. this poison kills living cells by preventing the formation of atp. what impact will this poison have on transport of water through the tracheids injected with poison
Answers
Tracheids (and vascular components) carry out their function after death, unlike many other plant cells. Water is transported through the remaining secondary cell walls in a method that does not require ATP. The passage of water through the injected tracheids will therefore not be affected by the toxin.
What are tracheids and what do they do?In all vascular plants, tracheids function both a structural support and a conduit for the upward movement of water and dissolved minerals; they are the sole such components in conifers and ferns. also see vessel. Through pits, water enters a tracheid, ascends through the interior of the conduit, and then exits through more pits into an additional, partially overlapping tracheid. Pits are another way that water enters and leaves a vessel.
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Which of the following statements correctly describes a function of the Golgi apparatus?
Select one:
A. protein modification and sorting
B. synthesis of cytoplasmic proteins
C. detoxification of drugs
D. production of ribosomal subunits
Answers
A. Protein modification and sorting correctly describes a function of the Golgi apparatus.
The Golgi apparatus is an organelle in eukaryotic cells that plays a crucial role in the modification, sorting, and packaging of proteins. After proteins are synthesized in the endoplasmic reticulum (ER), they are transported to the Golgi apparatus for further processing.
One of the main functions of the Golgi apparatus is protein modification. It adds various molecular tags, such as carbohydrates (glycosylation), lipids (lipidation), or phosphate groups (phosphorylation), to the proteins. These modifications help to modify the protein's structure, stability, and functionality.
The Golgi apparatus is also involved in protein sorting. It receives proteins from the ER and sorts them into different vesicles destined for specific cellular locations. These vesicles can transport proteins to the plasma membrane for secretion, to lysosomes for degradation, or to other organelles for specific functions.
In summary, the Golgi apparatus functions in protein modification and sorting, playing a vital role in the post-translational processing and trafficking of proteins within the cell.
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If you cross two heterozygous gray mice , what are the genotypes and genotypic percentages of the offspring ?
Answers
During the first years after the rediscovery of Mendel's laws, a number of experiments were performed that gave results that at first glance did not coincide with the laws. In 1904, a cross was made between a yellow-coated mouse and a mouse with a gray coat. The gray- coated mouse was extensively inbred and therefore was considered to be pure bred.
Rank the steps of meiosis I in the order in which they occur, beginning with the first phase at the top.
1. prophase I
2. metaphase I
3. anaphase I
4. telophase I
Answers
The correct order of the steps of meiosis I, beginning with the first phase on top, is:
Prophase IMetaphase IAnaphase ITelophase IMeiosis is a type of cell division that occurs in sexually reproducing organisms. It consists of two successive divisions, namely, meiosis I and meiosis II. Both these divisions are further subdivided into four stages each. The stages of meiosis I are prophase I, metaphase I, anaphase I, and telophase I. They occur in the order listed above.
The stages of meiosis II are prophase II, metaphase II, anaphase II, and telophase II. They occur in the same order as the stages of meiosis I but are much simpler. Meiosis results in the production of four haploid daughter cells that are genetically different from each other and from the parent cell.
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Fungi that decompose dead organisms a. can cause serious disease in plants. b. live in symbiosis with other organisms. c. return important nutrients to the soil. d. are often called pioneer organisms.
Answers
In the picture below identify an Abiotic factor
Answers
Answer:
water
Explanation:
water isn't living and abiotic is another word for non-living things
30 more coins for answer
Newton’s 2nd Law of motion can also be stated using the equation F= ma. State what EACH variable means and give its units. 6 marks
F is the symbol for :
m is the symbol for:[type answer here]
a is the symbol for :[type answer here]
The unit of F is:[type answer here]
The unit of m is:[type answer here]
The unit of a is: [type answer here]
Answers
So units for force is newtons or kg per meter squared.
Both of these units are correct for force.
M is the symbol for Mass! The units for mass are kg
A is the symbol for acceleration, the units for acceleration are meters per second per second ( ms^2)
What is used for building structures in the body they can also be enzymes?
(it’s either lipids or carbohydrates) WILL GIVE BRAINLIEST
Answers
Answer:
The correct answer is - proteins.
Explanation:
Enzymes are made up of the long chains of amino acids that are linked by the peptide bonds that make a polypeptide chain known as proteins. Proteins are the building block of the enzyme and the building of thevarious structures in the body.
Enzymes are made up of two protein that also plays as the role of a biological catalyst whereas protein only plays role in forming different structure and performing functions.
Which option identifies what the florist should save, rather than prune away in the following scenario?
A florist is trying to reduce the flowers that will grow on a rose bush, so that the remaining flowers will
be larger and will grow on long central stems suited to cutting.
O terminal bud <
O spur
O lateral bud
O Crown <
Note: it’s either A or D
Answers
A florist is trying to reduce the flowers that will grow on a rose bush , so that the remaining flowers will be larger and will grow on long central stems suited to cutting therefore the florist will save the terminal bud and is denoted as option A.
What is Terminal bud?This is the type of bud which is located as the ape-x of the stem and is responsible for all of its new growth. This is therefore the reason why it is known as the main bud of the plant.
In a situation whereby the florist wants to reduce the flowers that will grow on a rose bush, so that the remaining flowers will be larger, the florist will save the terminal bud which is therefore the reason why option C was chosen as the most appropriate choice.
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Need help asap, due today at night, plz help
Answers
Answer:
noble gases
Explanation:
noble gases sometimes referred to as aerogens make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).
What are the 4 main components that viruses have?
Answers
The main components that all viruses have are they contain Genetic material which is consist of DNA and mRNA for their reproduction as well as the Caspids protein.
What are the evidences of occurrence of viruses?The earliest evidence for the occurrence of viruses was the discovery of an infectious agent in the sap of a tobacco plant. Experiments were set with different filters from which bacteria could pass but viruses being even smaller than bacteria could not pass.
Viruses were difficult to study because they are very small and couldn't be seen even under a microscope.Wendell Stanley made his studies on the tobacco mosaic virus (TMV).
Therefore, The main components that all viruses have are they contain Genetic material which is consist of DNA and mRNA for their reproduction as well as the Caspids protein.
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12. Which is NOT a natural cause of extinction?
A. Disease
B. Catastrophic events
C. Introduction of new species
D. Competition due to overpopulation
24. Which is NOT true about energy transformation?
A. Energy is essential to all organisms.
B. Food contains energy that is needed by all organism.
C. Heterotrophs feed on autotrophs and other heterotrophs to gain energy.
D. Autotrophs do not need energy because they can produce their own food.
23. Which is the CORRECT sequence of events in cellular respiration?
A. Glycolysis - fermentation - Krebs Cycle
B. Glycolysis - Krebs Cycle - Electron Transport
C. Krebs Cycle - Electron Transport - Glycolysis
D. Krebs Cycle - Glycolysis - Electron Transport
2. In humans there are four types of blood; type A, type B, type AB and type O. A person with a genotype of IaIa or Iai will have blood type_____?
A. A
B. B
C. O
D. AB
4. A couple has four children, one son and three daughters. What is the chance that the fifth child will be a daughter?
A. ¼
B. ½
C. ¾
D. 1/5
22. Cellular respiration releases energy by breaking down_______.
A. ATP
B. water
C. carbon dioxide
D. food molecules
5. A man is colorblind but there is no history of this disorder in his wife’s family. What is the chance that their son is color
blind?
A. 0
B. 25%
C. 75%
D. 100%
25. Which BEST summarizes the process of respiration?
A. Water + Carbon Dioxide ( light) sugar + oxygen
B. Sugar + Oxygen (enzymes) water+ carbon dioxide +energy
C. Water + Sugar ( light ) carbon dioxide + oxygen
D. Oxygen + Water (enzymes) sugar + carbon dioxide + energy
1. A father with blood type AB and a mother with blood type O will probably produce offspring with a blood type ___. *
A. A
B. B
C. A or B
D.AB or O
6. What is a sex- linked trait that results in the inability to have normal blood clotting?
A. baldness
B. color blindness
C. diabetes
D. hemophilia
11. What causes species extinction?
A. Pollution and reforestation
B. Reforestation and carbon emission
C. climate change and over consumption
D. conservation and consume
18. The pigment molecules responsible for photosynthesis are located in the _______? *
A. Mitochondria
B. Cytoplasm of the cell
C. Stroma of the chloroplasts
D. Thylakoid membrane of the chloroplasts
13. Which part of a leaf contains most of the chloroplasts?
A. Lower epidermis
B. Palisade mesophyll
C. Spongy mesophyll
D. Upper epidermis
19. At optimum light intensity, which atmospheric gas most directly influences the rate of photosynthesis?
A. Nitrogen
B. Oxygen
C. Sulfur
D. Carbon Dioxide
14. What part of the leaf is this tiny opening in the lower epidermis which makes it rough and responsible for the entrance and exit of gases in plants?
A. xylem
B. phloem
C. stomata
D. guard cells
16. In which part of the chloroplast does light reactions of photosynthesis takes place?
A. Grana
B. Stroma
C. Inner membrane
D. Outer membrane
17. Which is NOT needed to make food in plants?
A. Flower
B. Sunlight
C. Chlorophyll
D. Carbon Dioxid
8. Color-blindness is inherited as a sex-linked recessive trait. If a normal woman, carrier of the gene marries a man with normal color vision. What would be the expected phenotype of their children with reference to color-blindness?
A. All color-blind
B. 2 carriers, 2 color-blind
C. 1 normal, 3 carriers
D. 2 normal, 1 carrier, 1 color-blind
3. Blood type O has both antibodies A and antibodies B in the plasma but has no antigen on its erythrocytes or red blood cells. That is why Blood Type O is considered UNIVERSAL______.
A. Blood
B. Donor
C. Marker
D. Recipient
7. Melvin’s thinning hair is like that of his father. This characteristic of baldness is due to
A. multiple alleles
B. sex-linked
C. sex-influenced
D. sex-limited
Answers
Answer:
12.D
24.B
23.C
2.A
4.D
22.B
5.B
25A
1.C
6.A
11.D
18.C
13.A
19.B
14.B
16.A
17.D
8.C
3.A
7.B
Explanation:
*.*
Pick one type of biologist, besides an ocean biologist, and describe what he or she studies. List three questions that biologist might ask about what he or she is studying.
Answers
Besides an ocean biologists we also have a Microbiologist. He or she studies micro-organisms.
A Few question they might as include
Importance of the courseWhere can they work after graduationWhat is the value of the course presentlyMeaning of MicrobiologyMicrobiology can be defined as that branch of science that is focused in the study of micro-organisms of all kinds and how they relate to man and his environment.
Microbiology is a field of study that deals with things like bacterial, viruses etc.
In conclusion, Besides an ocean biologists we also have a Micro biologist. He or she studies micro-organisms.
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What happens when sunlight bends as it passes through raindrops?
A ]The wavelength of UV rays increases.
B]The wavelength of the visible light increases.
C]Colors of light separate based on their wavelength.
D}Colors of UV rays separate based on their wavelength.
Answers
C]Colors of light separate based on their wavelength. When sunlight passes through raindrops, the light is refracted and separated into its component colors based on their different wavelengths.
What is wavelength?Wavelength is the distance between two successive crests or troughs of a wave. It is a measure of the length of a wave and is usually measured in meters (m). Wavelength is an important property of waves that can be used to identify and classify them. Wavelength is related to frequency, which is the number of waves that pass a certain point in a certain amount of time. Higher frequencies result in shorter wavelengths, and vice versa. Wavelength is an important property of light, sound, and other forms of energy, and is used to measure the speed of a wave or the energy of a wave. Wavelength is also related to the color of light and the pitch of sound.
This is why rainbows appear when sunlight is refracted through raindrops.
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Match the codon to the base using the codon wheel below (read the bases from the inside out to the amino acids).
100 POINTS
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The codon is a triplet of nucleotide bases in an RNA chain that code for amino acids during the process of translation.
During translation, the tRNA reads the mRNA sequence in triplet of nucleotides which is called as codon which is then used to decipher the amino acid to be added in the polypeptide chain.
As there are 20 amino acids, there is a redundancy of the codons, that is, many codons can code for one amino acid.
There is one codon that is always present at the beginning of the RNA which is called the start codon which is AUG. It initiates the translation process.
At the end of the RNA sequence is the stop codon which is UAA, UAG or UGA which bring the translation process to an end.
The codons given correspond to the following amino acids:
1. AUG - Methionine
2. GAA - Glutamic acid
3. CGG - Arginine
4. UGA - Stop codon
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Which of the following are extremely small, parasitic organisms that invade normal cells and cause disease?A.Fungi.B.Bacteria.C.Protozoa.D.Viruses.
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Viruses are extremely small, parasitic organisms that invade normal cells and cause diseases. They are considered obligate intracellular parasites, as they require a host cell to replicate and carry out their life cycle. The correct option is (d) Viruses.
Once inside a host cell, viruses use the host's cellular machinery to reproduce, leading to the destruction or alteration of the infected cell.Unlike other organisms such as fungi, bacteria, and protozoa, viruses are acellular and lack the ability to carry out metabolic processes or reproduce independently. They consist of genetic material (DNA or RNA) surrounded by a protein coat called a capsid. Some viruses may also have an outer envelope derived from the host cell membrane.Viruses are known to cause a wide range of diseases in humans, including the common cold, influenza, measles, HIV/AIDS, hepatitis, and many others. They can target various types of cells, including those in the respiratory system, immune system, gastrointestinal tract, and nervous system.
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blood in arteries a. is always oxygen-rich and always travels away from the heart. b. is always oxygen-rich. c. travels from the lungs. d. always travels away from the heart. e. always travels toward the heart.
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The blood in arteries is always oxygen-rich and always travels away from the heart. The correct answer is "a. is always oxygen-rich and always travels away from the heart."
Blood in the arteries, with the exception of the pulmonary artery, is oxygen-rich because it has just left the lungs after being oxygenated. Arteries are designed to carry blood away from the heart, while veins return blood to the heart.
Arteries carry oxygen-rich blood from the heart to various parts of the body. This oxygenated blood provides the necessary energy and nutrients for the cells to function properly.
Therefore, the blood in arteries is always oxygen-rich and always travels away from the heart. The option (a) is correct.
The complete question is:
Blood in arteries;
a. is always oxygen-rich and always travels away from the heart.
b. is always oxygen-rich.
c. travels from the lungs.
d. always travels away from the heart.
e. always travels toward the heart.
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which of the following combinations of molecules illustrated could be linked to form a nucleotide?
A) 1, 2, 11
B) 3, 7, 8
C) 5, 9, 10
D) 11, 12, 13
Answers
The combination of molecules illustrated in option C (5, 9, 10) could be linked to form a nucleotide.
A nucleotide is made up of three components: a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and a phosphate group. In option C, molecule 5 is a nitrogenous base (cytosine), molecule 9 is a five-carbon sugar (ribose), and molecule 10 is a phosphate group. These three molecules can be linked together to form a nucleotide.
In option A, molecule 1 is a nitrogenous base (adenine), molecule 2 is a five-carbon sugar (ribose), and molecule 11 is a phosphate group. Although these molecules have the necessary components to form a nucleotide, they are not in the correct order to do so.
In option B, molecules 3 and 8 are both nitrogenous bases (adenine and guanine, respectively), and molecule 7 is a phosphate group. However, there is no five-carbon sugar present in this combination, so it cannot form a nucleotide.
In option D, molecules 11 and 13 are both phosphate groups, and molecule 12 is a nitrogenous base (thymine). Again, there is no five-carbon sugar present in this combination, so it cannot form a nucleotide.
Option C (5, 9, 10) is the only combination of molecules that has the correct components (a nitrogenous base, a five-carbon sugar, and a phosphate group) in the correct order to form a nucleotide.
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