Answer:
Anaphase
Explanation:
(h) It would be better to calculate percentage change in mass rather than change in mass.
Why is this a more valid method? Tick one box.
Because it makes it a fair test.
Because it makes the investigation of the
samples of cubes more accurate.
Because the samples of cubes were different
masses at the start of the investigation.
Page 2 of 9
Because the amounts are so little, it is more appropriate to present this as a percentage, as the ratio of weight lost on a limited scale should be roughly the same proportion as mass loss on a bigger size anyhow.
Why is a percentage change more precise?Because you will usually be dealing with large data and numbers, it is more crucial to utilise the % change approach because, as you can see, it provides a more exact representation of how the data has evolved over time.
For analysing statistical data across time, percentage changes are commonly employed, whereas percentage points are commonly used when analysing rate differences.
When comparing different sets of data, calculating the % change is more accurate. Finding the change in mass is only useful for data sets that began with the same mass.
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You have a population where the percentage of homozygous dominant individuals is 27%. Use the equation to fill in this table.
Frequency of the dominant allele
Frequency of the recessive allele
% homozygous dominant
% homozygous recessive
% heterozygous
Allelic and genotypic frequencies of populations that are in Hardy-Weinberg equilibrium do not change through generations. Frequency of the dominant allele = 0.52. Frequency of the recessive allele = 0.48. Homozygous dominant = 27%. Homozygous recessive = 23%. Heterozygous = 50%.
What is the Hardy-Weinberg equilibrium?
The Hardy-Weinberg equilibrium theory states that the allelic and genotypic frequencies of a population in equilibrium remain the same through generations. No evolutive forces are acting on these populations.
Assuming a diallelic gene, Allelic frequencies in a locus are represented as p and q.
The frequency of the dominant allele p(X) is pThe frequency of the recessive allele p(x) is qThe genotypic frequencies after one generation are
• p² (Homozygous dominant genotypic frequency),
• 2pq (Heterozygous genotypic frequency),
• q² (Homozygous recessive genotypic frequency).
The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
In the exposed example, the percentage of homozygous dominant individuals is 27%.
F(XX) = p² = 27% = 0.27
Knowing the frequency of the homozygous dominant genotype, is useful to get the allelic frequency by taking the root square.
p² = 0.27
p = √0.27
p = 0.52
Now, we can clear the equation p + q = 1 to get the recessive allele frequency,
p + q = 1
0.52 + q = 1
q = 1 - 0.52
q = 0.48
Finally, we can get the remaining genotypic frequencies,
q² = 0.48² = 0.23
2pq = 2 x 0.52 x 0.48 = 0.5
p² + 2pq + q² = 1
0.27 + 0.5 + 0. 23 = 1
In conclusion,
Frequency of the dominant allele = 0.52Frequency of the recessive allele = 0.48% homozygous dominant = 27%% homozygous recessive = 23%% heterozygous = 50%You can learn more about the Hardy-Weinberg equilibrium at
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Cells that do not contain a nucleus are known as what?
Answer:
prokaryotes
Explanation:
is the force of attraction that exists and holds atoms
together.
Answer:
covalent bond.
Nucleotide are composed of a photosphate group a sugar and nitrogenous base DNA Isela made up of long Strands of nucleotide which part of the above molécule can differ between nucleotides
Answer:
The phosphate end and OH end of nucleotide in DNA differ from free nucleotides molecules.
Explanation:
5' phosphate group of one nucleotide and 3'-OH group of another nucleotide combine to form phosphodiester bond which holds the nucleotides in DNA molecule.
The phosphate end and OH end of nucleotide in DNA differ from free nucleotides molecules.
For each of the following causes of extinction, explain how the increase in the human population makes the problem worse.
a. Habitat alteration
b. Commercial hunting
c. Competition
d. Sport hunting
e. Pest control
f. Pollution
Answer:
Im pretty sure its E sorry if its wrong.
(Choose the letter of the correct answer, ASAP!!!)
1. Lymph tissue and lymph nodes that protect the body from infection
A. Adenoids and tonsils
B. Alveoli and sinuses
C. Bronchi and trachea
2. This tube Carries air down to the windpipe
A. Larynx
B. Sinuses
C. Pharynx
Answer:
answer of first question is option A. and answer of second question is also option A.
Duplicate chromosomes line up (in a single line) during metaphase
Answer:
Metaphase: During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate. Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate. ... These separated sister chromatids are known from this point forward as daughter chromosomes.
Explanation:
# carry-on learning
How does innate behaviors help organisms maintain
homeostasis.
Answer:
By using survival instincts and reflexes organisms can survive longer by doing what their brain is telling them to do. For example, if you fell something hot you stop touching it because of the pain receptors in your brain. This lets the organism achieve homeostasis and live another day.
Explanation:
Answer:
Innate behaviors of organisms help to maintain homeostasis by ensuring that optimum conditions for proper functioning of the organism are kept almost constant
Explanation:
For example, during cold weathers, the body adapts to this change in temperature by inducing shivering so as to allow the production of heat to increase the body's temperature to it's optimum state.
Similarly when there is excess water in the body, hormones are released to induce urination so as to get rid of the excess water in order to prevent pH changes which would affect biochemical processes in the body.
These innate characteristics are therefore necessary so as to keep the organism at optimum state.
Please quickly answer!!
Which would be the best way for a company to reduce energy usage in it's office and have the least effect on employees?
Sev3d
remove half the light bulbs in each office and allow employees to bring battery powered flashlights
turn off heat/ air systems and unplug electrical items while the office is closed
replace the microwave in the breakroom with a charcoal grill
switch all light bulbs to hot incandescent bulbs
Turn off heat/ air systems and unplug electrical items while the office is closed.
How can we save energy in the office?There are many ways to save energy in the office. Doing small things such as turning off lights and computers when not in use and unplugging chargers and other electronics when they are not in use can save energy.
Installing energy efficient lighting, such as LED lights, and setting up motion sensors to turn off lights in unused areas can also help. Setting up a recycling program and encouraging employees to use reusable containers and mugs for their drinks can also help.
Taking advantage of natural lighting by opening windows and using window shades or blinds to block out the sun when it is too bright can also help. Finally, investing in energy efficient office equipment and using energy saving settings can help reduce energy consumption.
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1. What part of the body covers the windpipe when you swallow? diaphragm O bronchi O tongue O epiglottis
Answer:
diaphram or Bronchi
Explanation:
Answer:
epiglottis
Explanation:
I took the test
What were the two achievements of the first women’s rights convention at Seneca Falls?
The women’s rights convention at Seneca Falls was the first largest convocation of women of its kind in the United States of America.
What is the women convention?The women convention was the first largest convocation of women of its kind in the United States of America. The subject of discussion was the right of women.
The two main achievements of the convocation were;
1) The launching of the women's suffrage movement
2) The fact that women were later allowed to vote
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5) A stimulus causes a change or response in
an organism.
a. True
b. False
The answer
A stimulus causes a change or response in an organism
True
In the Gizmo, what light intensity and CO2 level do you think will maximize the rate of photosynthesis? (adjust the slider bars to determine this)
Answer:
Higher.
Explanation:
Higher light intensity as well as higher concentration of carbondioxide gas will increases the rate of photosynthesis because high light intensity allows the entering of carbondioxide gas inside the leaves through opening of stomata whereas carbondioxide gas is the reactant in the process of photosynthesis. If there are more reactants available so more food is produced in the form of glucose during the process of photosynthesis so we can conclude that high light intensity and carbondioxide levels increases the rate of photosynthesis.
During which eon did Pangaea come together?
Archean
Hadean
Phanerozoic
Proterozoic
Pangaea came together during the Phanerozoic eon.
• The current geologic eon in the geologic time scale is the Phanerozoic eon. It is the one during which abundant plant and animal life prevailed.
• It is of the span of 541 million years to the present, and it started with the Cambrian period when animals initially developed hard shells.
• The Phanerozoic time span began with the sudden emergence of fossilized evidence of a number of animal phyla, the development and emergence of complex plants, and the evolution of fish, the emergence of tetrapods and insects, and the development of present time fauna.
• During the Phanerozoic eon, the tectonic forces moved the continents and gathered them into a single landmass called Pangaea, which later got separated into the present continental landmasses.
Thus, the correct answer is Phanerozoic eon.
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Which sentence is true about inherited mutations?
Inherited mutations are permanent changes in the DNA sequence that makes up a gene.
These mutations can have various effects on an individual, it also increases the probability of developing certain genetic disorders. On the other hand, it can have advantageous effects too. The different types of inherited mutations are given below.
Germline mutation: This occurs in the egg or sperm cell and is passed to future generations.For example cystic fibrosis.Somatic mutation: This kind of mutation occurs in nonreproductive cells and is not passed to future generations.Inherited mutations can be checked using a diagnosis that identifies the changes in DNA. Genetic consulting is another solution.
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The question feels incomplete. Please provide some more details, ie, the sentence choices to choose the correct one.
18-25 indicate if the following events occur during a. respiration b. photosynthesis c. both respiration and photosynthesis d. neither respiration and photosynthesis
An event which occur during reduction of FADH to FADH₂ splitting of water to form oxygen gas and hydrogen ions is a)respiration.So,correct option is a.
Cells of all living creatures need NADH and FADH₂ (normally happening coenzymes) for energy creation. During cell breath, the phones utilize these coenzymes to divert fuel from food into energy. This Biologywise post expounds more on the capability of NADH and FADH₂.
Cellular respiration is the method involved with using oxygen and food particles to make energy, carbon dioxide, water, and side-effects. Essentially, breath is the means by which we convert food into energy utilizing water and oxygen. Breath comprises of three separate metabolic stages: glycolysis, the Krebs cycle, and the electron transport chain. We won't be meticulously describing the situation on these three stages here. All things being equal, we'll zero in on two mixtures, FADH₂ and NADH, and how they are integrated into breath.
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(Complete question) is:
Indicate whether the following events occur during A. photosynthesis B. respiration C. both photosynthesis and respiration D. neither photosynthesis nor respiration reduction of FADH to FADH2 splitting of water to form oxygen gas and hydrogen ions
referring to the timeline of crispr highlights in the bottom part of the infographic above, when did researchers discover the last component required to use crispr as a gene-editing tool?
Option B, The year in which the greatest percentage of articles discussing the natural biology of CRISPR-Cas9 in bacteria is 2013.
Based on the timeline of CRISPR highlights, the greatest percentage of scientific articles discussing the natural biology of the CRISPR-Cas9 system in bacteria would likely be in the year 2012. This is because the breakthrough paper by Jennifer Doudna and Emmanuelle Charpentier describing the use of CRISPR-Cas9 as a gene-editing tool was published in 2012, which sparked widespread interest and research in the field.
Researchers discovered the last component required to use CRISPR as a gene-editing tool in the year 2011, which was the tracrRNA molecule. This discovery was made by the Doudna and Charpentier team, which led to their groundbreaking paper in 2012.
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The question is -
Scientific articles discussing the CRISPR system might describe the biology of the natural CRISPR-Cas9 system in bacteria, or they might use CRISPR-Cas9 as a tool to answer questions about another organism's genes. In which year would the greatest percentage of these articles likely address the natural biology of CRISPR-Cas9 in bacteria, rather than using it to explore other organisms?
Referring to the timeline of CRISPR highlights above, when did researchers discover the last component required to use CRISPR as a gene-editing tool?
Choose one:
A. 2006
B. 2013
C. 1987
D. 2011
Bacteria were first observed in 1903. True False
Answer:
false, it was first observed in 1676
Explanation:
Answer:
FALSE!!!!
Explanation:
______ is an increasingly popular method of specifically treating organic waste such as food and yard waste.
Composting is an increasingly popular method of specifically treating organic waste such as food and yard waste.
Composting is a natural process that involves the decomposition of organic materials, such as food scraps, yard waste, and other biodegradable materials, into a nutrient-rich soil amendment called compost.
It is an environmentally friendly and sustainable method of managing organic waste.
During the composting process, organic waste is collected and placed in a composting system, such as a compost bin or pile. The waste is then broken down by microorganisms, such as bacteria, fungi, and worms, in the presence of oxygen.
These microorganisms break down the organic matter, converting it into humus, a dark and crumbly substance rich in nutrients.
Composting offers several benefits. Firstly, it helps divert organic waste from landfills, reducing greenhouse gas emissions and minimizing the environmental impact of waste disposal.
Secondly, compost can be used as a nutrient-rich soil amendment in gardening, landscaping, and agriculture, improving soil fertility, water retention, and plant growth.
Due to its numerous advantages and environmental benefits, composting has gained popularity as a method of specifically treating organic waste, including food scraps and yard waste. It is a sustainable solution that promotes waste reduction and resource conservation.
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7. Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy. Assume 1 kg of fuel is used, and the mass of the water produced is 1.10 x 10-11 kg. How much energy is produced by this fuel cell? (Hint: Use E = mc2.)
Answer:
this is a hard one
Explanation:
what is biology? answer it clearly
good afternoon
Answer:
The biology is a branch of science which deals with living organisms
Answer:
The branch of Science which deals with study of flora and faunna and their classification ... is called biology .
Moving up trophic levels there is an increase in energy, entropy, and biomass. please select the best answer from the choices provided t f
Answer:
False
Explanation:
Moving up trophic levels there is a loss of energy (90% per level) and a decrease in biomass.
Answer: False on Edge 2023 :)
5. Interpret the experiment design and select what Elizabeth is likely to observe.
Answer:
Experimental design refers to how participants are allocated to the different groups in an experiment. Types of design include repeated measures, independent groups, and matched pairs designs.
Explanation:
hope it's helps you.....:)
why does the heart automatically adjust the flow of blood to match activity levels? a. extreme activity damages blood cells and the body needs replacements. b. the heart requires more oxygen when exercising. c. it reduces the level of oxygen in the blood. d. organs and muscles require mo
Because stressed organs and muscles need more blood, the heart automatically modifies the blood flow.
Blood flow to correspond with levels of activity.The effector organs of movement, the muscles, receive a proportionately greater volume of blood ejected by the heart when the organism is required to produce energy.
It makes sense that the heart would have to work harder and receive more blood.
With this knowledge, we can draw the conclusion that the heart pumps more blood to meet the organs' needs. The main organ responsible for moving blood throughout the body is the heart. By consuming more oxygen, the heart automatically modifies blood flow to correspond to activity levels.
When there is enough oxygen in the air, the heart works properly. The body needs more energy during a period of activity or exercise to meet the demands of the activity. In order to increase blood flow and meet the oxygen demand, the heart adjusts by absorbing more oxygen.
The heart distributes the proper amount of blood to the body's various organs so that no physiological issues arise.
It makes sense that the heart would have to work harder and receive more blood.
With this knowledge, we can draw the conclusion that the heart pumps more blood to meet the organs' needs.
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following crossover, the homologus chromosomes split, then in meiosis ii, sister chromatides split the sister chromatides are that will result from unqeual crossing over are labeled a,b,c,d. if chromatid b was packed into a gamete, which of the following conditions would result quizelt
If chromatid b was packed into a gamete after unequal crossing over, the resulting condition would be genetic variation or a genetic mutation. This is because unequal crossing over can lead to changes in the genetic sequence of the chromosome, resulting in different traits or characteristics in the offspring. Therefore, the gamete carrying chromatid b would have a different genetic makeup than the parent cell, leading to variation in the offspring.
1. During meiosis, homologous chromosomes undergo a process called crossover, where they exchange genetic material.
2. In the first division of meiosis (meiosis I), the homologous chromosomes split apart and are separated into two cells.
3. In the second division (meiosis II), the sister chromatids within each chromosome separate, forming four cells with unique genetic combinations.
Now, let's address the specific scenario with chromatids labeled a, b, c, and d:
4. Chromatid b is packed into a gamete (a reproductive cell).
5. Unequal crossing over during meiosis can lead to chromatids with different genetic information.
6. If chromatid b is present in a gamete, the resulting condition will depend on the genetic information in the other chromatids (a, c, and d) that it may combine with during fertilization.
In summary, the specific condition that results from chromatid b being packed into a gamete depends on the genetic material it combines with during fertilization. It is not possible to determine the exact condition without more information about the other chromatids involved.
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Which part of the brain is represented by the highlighted area shown below? (5 points)
0 Cerebrum
Cerebellum
ОООО
O Medulla oblongata
Pons
Answer: Cerebellum
Explanation: I took the test
Can someone help me create an island with how it was made and 5 landmarks that has a geological back story to them.
Also if u need an example this is one my teacher did; Pele used to fight with other gods, she erupted the volcano. The other gods of water, wind, and snow overpowered her and covered the volcano in snow. Till this day there are basalt rocks that can be found on top of Mauna Kea.
Answer:
I used to live in an island, it was made out of limestone and volcanic rock
Explanation:
began to form with undersea volcanic eruptions in the Eocene
-Marianas Trench
-cliffs, cave, peninsula, grotto
abp1 has been studied for almost 40 years and was considered an auxin receptor. it was included in textbooks. what went wrong and what lessons can we learn from the abp1 fiasco?
New research suggests that ABP1 may not function as a direct auxin receptor. The lesson is to be open to reevaluating scientific findings and updating knowledge based on new evidence.
The ABP1 (Auxin Binding Protein 1) fiasco serves as a valuable lesson in scientific research and the importance of critical evaluation.
ABP1 was widely believed to be an auxin receptor for nearly four decades and was included in textbooks.
However, subsequent studies and advancements in scientific techniques revealed inconsistencies and raised doubts about its true role.
The "ABP1 fiasco" demonstrates that scientific knowledge is continually evolving, and even long-held beliefs can be challenged and revised as new evidence emerges.
It highlights the necessity for rigorous and ongoing scrutiny of scientific findings, encouraging researchers to question established dogmas and revisit previous assumptions.
The case of ABP1 emphasizes the importance of replication and independent verification of experimental results. It underscores the need for robust experimental design, thorough controls, and the use of multiple techniques to confirm findings.
Additionally, it serves as a reminder that scientific progress requires an open and collaborative environment where ideas can be openly discussed, challenged, and refined.
Ultimately, the ABP1 fiasco reinforces the principle of scientific skepticism and the value of critical thinking in the pursuit of knowledge.
It reminds us to approach scientific claims with a healthy level of skepticism, promoting a culture of continuous inquiry and reevaluation within the scientific community.
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What is aerobic respiration?
A. The process cells use to produce glucose and oxygen
B. The process cells use to release energy from glucose in the
presence of oxygen
c. Physical activity that involves large muscle groups and increases
breathing rate
D. Physical activity that causes the heart and lungs to work harder to
meet the body's need for oxygen
SUBMIT
Help?