Answers
Answer:
Tube B
Tube D
Explanation:
Test B contained extracts of potato. The peels of potato contains starch. When the solution is introduced with potato peels the color changes from blue to black. This indicates that test tube B contains starch. In test tube D iodine test is conducted to identify the presence of starch in natural minerals.
Related Questions
how do organisms differ from on to another?
Answers
Answer:
'genetic variation' enables natural selection which make organisms differ from one to another.
Which of the following is "not" likely to cause a magnet to lose
its magnetism?
a. Striking it with a hammer.
b. Cooling it.
c. Dropping it repeatedly on the ground.
d. Heating it.
The magnetic field of a magnet is strongest
a. at its north pole.
b. at its south pole.
c. in the middle.
d. at both of its poles.
Answers
The answers include the following:
The following which is "not" likely to cause a magnet to lose its magnetism is cooling it and is therefore denoted as option B.The magnetic field of a magnet is strongest at at both of its poles and is denoted as option D.What is a Magnet?This is referred to as a material or object that produces a magnetic field and it has two poles which are the North and south poles in which the magnetic field of a magnet is strongest.
Cooling a magnet will not cause a magnet to lose its magnetism but instead the magnetism will increase because the molecules within the magnet will move slower because they have less kinetic energy so there is less vibration within the magnet's molecules thereby resulting in more concentrated magnetic field that strengthens the magnet.
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If you cross two organisms that are heterozygous for a trait, what percent of
the offspring would you expect to express the recessive phenotype?
Answers
Answer:
25%
Explanation:
Here's an example: two chickens have the phenotype of white feathers and brown feathers. What percentage of the chicks will have the recessive color? First, you have to see the parents' phenotypes. Draw a punnet square. Put one of the parent's phenotypes (w and B) on the top, and the other parent's (w and B) on the right side going down. Whichever trait is dominant (brown) MUST be capitalized. Then, cross the two parents. first box on the top left would read 'ww.' The one below it is 'Bw' (put the dominant first). The right top is 'Bw' and the one below it is 'BB'. So if there were 4 offspring, these would be their genotypes: 'ww', 'Bw', 'Bw', and 'BB'. The only offspring that would have the recessive trait is the 'ww' child, because dominant overpowers recessive. So 25% would have the recessive trait and 75% would have the dominant trait.
please help no links or i will report
Answers
Answer and Explanation:
The difference between a food chain and a food web:
Food Chain
- Only one possible direct line of energy going through organisms
- Consists of usually 4-6 organisms
Food Web
- Multiple links that branch off in a web-like form, with some organisms being interconnected with each other.
The answer is the third option: A food chain represents one possible pathway that energy and matter can take in an ecosystem. A food web contains multiple, interconnected food chains and describes how energy and matter moves through an entire ecosystem.
#teamtrees #PAW (Plant And Water)
Which are vital signs?
O temperature, respiratory rate, and weight
O muscle mass, height, and weight
Oheart rate, temperature, and height
temperature, respiratory rate, and heart rate
Answers
The correct combination of vital signs is temperature, respiratory rate, and heart rate.
Vital signs are key measurements that provide important indicators of a person's physiological status and overall health. They help healthcare professionals assess and monitor a patient's condition. The vital signs typically include temperature, respiratory rate, heart rate, and blood pressure. Among the options provided, the correct combination of vital signs is temperature, respiratory rate, and heart rate.
Temperature is a measure of the body's internal heat. It can be measured orally, rectally, or with the help of infrared thermometers. Deviations from the normal range may indicate fever or hypothermia, which can be indicative of underlying health issues.
The respiratory rate refers to the number of breaths a person takes per minute. It provides insight into lung function and overall respiratory health. Abnormal respiratory rates may suggest respiratory distress or underlying pulmonary conditions.
Heart rate, also known as pulse rate, measures the number of times the heart beats per minute. It reflects cardiac activity and can be assessed by feeling the pulse at various points in the body. Deviations from the normal heart rate can indicate cardiovascular problems or other physiological abnormalities.
Weight, muscle mass, and height are not typically considered vital signs. They are important anthropometric measurements used for assessing overall body composition, growth, and nutritional status. While these measurements are relevant in healthcare, they are not classified as vital signs.
In summary, the vital signs include temperature, respiratory rate, and heart rate. Monitoring these parameters allows healthcare professionals to gain valuable insights into a patient's health status, identify potential issues, and make informed decisions regarding treatment and care.
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What is the answer for this. Asapp
Answers
0.51 is the frequency of the T allele. Therefore option D is correct.
To determine the frequency of the T allele, we need to consider the number of T alleles present in the population.
The number of T alleles in the population can be calculated as follows:
Number of T alleles = (Number of TT individuals * 2) + (Number of Tt individuals * 1)
Number of T alleles = (28 * 2) + (46 * 1) = 56 + 46 = 102
Since there are a total of 200 alleles in the population (2 alleles per individual), the frequency of the T allele can be calculated as:
Frequency of T allele = Number of T alleles / Total number of alleles
Frequency of T allele = 102 / 200 = 0.51
Therefore, the frequency of the T allele is 0.51.
Thus, the correct answer is D. 0.51.
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What does this sentence mean?
“Extinction events, of course, result in loss of species. At the same time, however, they also encourage different species to evolve.”?
Answers
Mass extinction. This reduces the amount of competition for resources and leaves behind a large number of empty niches, which are then filled by surviving lineages.
Therefore, the extinction of dinosaurs such as T. rex and Brontosaurus about 65 million years ago would be unremarkable without the reality that they ate over half of all plants and animals that were present at that point. were alive at the same time perished in what scientists refer to as a mass extinction. Mass extinctions occur when large numbers of species are removed from their respective ecosystems in a relatively short amount of time.
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Which of the following events occur in ventricular diastole, and which occur in ventricular systole?
Answers
Ventricular filling and atrial contraction occur in ventricular diastole, while isovolumetric contraction and ventricular ejection occur in ventricular systole.
During the cardiac cycle, the heart undergoes two main phases: diastole and systole.
Diastole refers to the relaxation phase of the heart, while systole refers to the contraction phase.
Let's explore some of the events that occur during each phase:
Events that occur during ventricular diastole:
Ventricular Filling:
During this phase, blood flows from the atria into the ventricles through the open atrioventricular valves (mitral and tricuspid valves).
The ventricles are relaxed and passively receive blood from the atria.
Atrial Contraction:
Towards the end of ventricular diastole, the atria contract to push the remaining blood into the ventricles.
This helps to further fill the ventricles before they contract.
Events that occur during ventricular systole:
Isovolumetric Contraction:
The ventricles begin to contract, causing an increase in pressure within the chambers.
The atrioventricular valves (mitral and tricuspid valves) close to prevent the backflow of blood into the atria.
However, the semilunar valves (aortic and pulmonary valves) remain closed, resulting in no blood flow out of the ventricles during this phase.
Ventricular Ejection:
As the ventricular pressure surpasses the pressure in the aorta and pulmonary artery, the semilunar valves open, allowing blood to be ejected from the ventricles into the respective arteries.
This is the phase where blood is pumped out of the heart to the systemic and pulmonary circulation.
After ventricular systole, the heart returns to ventricular diastole to repeat the cycle.
In summary, ventricular diastole includes ventricular filling and atrial contraction, while ventricular systole includes isovolumetric contraction and ventricular ejection.
These events ensure proper blood flow and circulation throughout the body.
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The pathway labeled B in the figure above is called
a. alcoholic fermentation c. glycolysis
b. lactic acid fermentation d. cellular respiration
Answers
The image shows a food web which three statements are supported by the food web
Answers
The image displays a food web consisting of various living organisms and is shown below:
The hawk and the snake compete for the same prey.The hawk and the snake compete for the same prey, i.e. the mouse, in the given food web. The arrows pointing towards both of these predators are from the mouse, which is an indication that they are both consumers of the mouse.The rabbit is eaten by the hawk, owl, and snake.In the given food web, the rabbit serves as a primary consumer and is eaten by the hawk, owl, and snake, all of which are secondary consumers. The arrows that point towards these predators are from the rabbit, which shows that they consume the rabbit.The sun provides the energy for producers.The sun is the primary source of energy for all the living organisms in the given food web. The sun's energy is transformed into chemical energy by the producers, which are the green plants in the given food web. This energy is then transferred to other living organisms through the food chain.For such more questions on food web
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the illustration displays cross-sections of muscle filaments in a sarcomere. myosin filaments are represented by the larger dots and actin filaments are represented by the smaller dots. match the filament pattern in the four numbered squares with the correct placement in a relaxed sarcomere of striated muscle.
Answers
The portion of a Z-line that is between two nearby neighbors is known as a sarcomere (or Z-discs). The Z-line (derived from the German word "zwischen," which means between), which anchors the actin myofilaments, can be seen in between the I-bands in electron micrographs of cross-striated muscle.
The I-band region is located around the Z-line (for isotropic). The I-band is the region of thin filaments where thick filaments are not overlaid (myosin).
The I-band is followed by the A-band (for anisotropic). named after the characteristics they exhibit under polarized light. The full length of a single thick filament is contained within an A-band. There are both thick and thin filaments in the anisotropic band.
The H-zone is a paler area located within the A-band (from the German "heller", brighter). Known as a result of their lighter look under polarization imaging technology. The region of the thick filaments that lacks actin is known as the H-band.
A narrow M-line, which is derived from the German word "mittel," or "middle," emerges in the middle of the sarcomere, which is made up of cytoskeleton cross-links, within the H-zone.
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After inoculating and incubating an agar slant from a pure broth culture of the bacterial species Serratia marcescens, which of the following would indicate an unsuccessful aseptic transfer? Select all that apply. There is fungal growth in the original broth culture tube. There are red, yellow, and white colonies on the slant. There is no growth on the slant. There are colonies of the same morphology on the slant.
Answers
Answer:
there is no growth on the slant
Which sequence of events best explains the interaction between the components of the Arctic ecosystem feedback loop
Answers
The sequential events in the Arctic ecosystem feedback loop are: Global temperature increases → permafrost thickness decreases → methane increases → global temperature increases. It is harmful to the Earth.
The Arctic ecosystem is a feedback loop because the warmer the temperatures, the less sea ice (permafrost) is observed.
The Arctic ecosystem feedback loop is a dangerous phenomenon because it accelerates global warming.
Permafrost refers to ice ground that remains completely frozen (0°C) for at least two (2) or more years straight.
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Read the following scenarios carefully and explain how natural selection will occur in each.
Some worms eat at night (meaning they are nocturnal) and some worms eat during the day (meaning they are diurnal). Most birds eat only during the day, so they are only eating diurnal worms, due to the fact that the nocturnal worms are burrowing during this time. Each spring when the worms reproduce, about 500 offspring are born but only 100 of them live long enough to reproduce themselves.
Answers
Answer:
The correct answer is - Noctural worms have the advantage over diurnal due to the fact that the nocturnal worms are burrowing during the feeding time of birds.
Explanation:
Natural selection is the process in which organisms adapt according to environmental changes to increase their survival rate. Natural selection leads to natural changes in different organisms.
In this case, diurnal worms are forced by the natural selection here to adapt to the change if they want to survive. Here, natural selection works for the nocturnal and against the diurnal.
Choose the right answer from the given question.
1. Name the process of gaseous exchange in the body.
a) Lymphatic system
b) Respiration
c) Cardiovascular system
d) Respiratory system
2. Nose, larynx, pharynx, lungs, trachea, and bronchi are the parts of the respiratory
system.
a) True
b) False
3. Which of the following is NOT the function of the respiratory system?
a) Regulate blood pH
b) Helps in gaseous exchange
c) Protection against blood loss
d) Contains receptors for the sense of smell
3. Which of the following is NOT the function of the respiratory system?
a) Regulate blood pH
b) Helps in gaseous exchange
c) Protection against blood loss
d) Contains receptors for the sense of smell
4. Which of these statements is TRUE for pulmonary respiration?
a) Exchange of gases between alveoli of lungs and the blood
b) Exchange of gases between blood and tissue cells
c) Breathing between the atmosphere and the alveoli of the lungs
d) Production of ATP
5. Which of the following controls the normal breathing process?
a) Amino acids
b) Cholesterol
c) Ventral respiratory group
d) Dorsal respiratory group
Answers
Answer:
The answer to #1 I believe would be B, #2 would be True, #3 would be D, #4 would be A and #5 would be C or D, but leaning more towards C.
Explanation:
What is the surface of the Earth called?
Crust
Mantel
Inner core
Outer core
Answers
Answer:
crust
Explanation:
Humans depend upon a variety of Earth's natural resources. Certain resources should be conserved because humans are able to consume them much faster than they can be replaced by natural processes.
Which of the following is a resource that should be conserved?
wind coal
oil (petroleum)
natural gas sunlight geothermal energy
Answers
Answer:
Explanation:
coal
oil
natural gas
These are the big three. Of the three, oil is the most important. It is relatively clean burning -- relative to coal which might be more abundant.
Natural gas is more abundant, but it is awfully hard to store.
If all else fails, coal, but coal is a very dirty burn.
Which direction does blood flow in arteries?
Answers
it flows towards the heart
The place in which an organism lives and hunts for food is its __________________.
Answers
Cars are powered by fossil fuels, which come from the remains of ancient living things that were buried and exposed to high temperature and pressure from Earth’s interior. Which spheres are represented when fossil fuels form? atmosphere and biosphere biosphere and geosphere cryosphere and atmosphere geosphere and hydrosphere
Answers
Answer:
biosphere and geosphere
Explanation:
just took quiz got 100%
Fossil fuels are formed in the in the biosphere(oceans) and in the geosphere (rocks)
What are fossil fuels?Fossils fuels are fuels produced from the remains of ancient living things that were buried and exposed to high temperature and pressure from Earth’s interior.
These remains are found on the sea floors and underground in rocks.
The sea remains are on th biosphere while the rock remains are in the geosphere.
Therefore, fossils fuels are formed in the biosphere and in the geosphere.
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We have two kinds of rats, dark brown and white rats in a population. In a rain forest scenario, with dark top soil, which kind of rats can survive better, taking into consideration, natural selection?
a.
White rat
b.
Both of them will survive
c.
Brown rat
d.
Neither
Answers
Answer:
C
Explanation:
they blend in with the soil color
i am looking for the answer key to the category 1: cell structure and function biology staar review
Answers
Studying the necessary content, going through lecture notes and textbooks, and working through practise questions and quizzes are the best ways to get ready for an exam.
How do cells work and how do they look?Cells are the essential building components of all living things.There are many billions of cells in a human body. In addition to providing the body with structure, they also absorb nutrients from meals, convert those nutrients into energy, and carry out certain jobs.
Who first identified cells?The cell has a long and interesting history, beginning with Robert Hooke's discovery in 1665 and leading to many of today's scientific discoveries.
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why unraveling past climate changes is important and discuss several ways in which such changes are detected
Answers
Unraveling past climate changes is important because it helps us to understand the causes and consequences of climate change.
What is climate change?Climate change refers to the long-term changes in temperature and weather patterns. These may be natural or man-made changes.
Some examples of climate changes include sea level rise, rapid loss of ice mass loss in Greenland, Antarctica, and the Arctic, changes in floral and plant blossoming, and extreme weather occurrences.
Some methods by which past climate changes can be detected include:
Ice cores provide information on past climatic and weather conditions.Tree rings give information about past weather conditions.Sediment coresFossil recordsHistorical recordsLearn more about climate change at: https://brainly.com/question/1789619
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Complete question:
Explain why unraveling past climate changes is important and discuss several ways in which such changes are detected.
There are birds that eat the food from between the teeth of alligators, leaving the
alligators with clean teeth and the birds with a meal. What type of ongoing relationship
is this?
B. Mutualism
C. Commensalism
D. Parasitism
A. Predator & Prey
Answers
Answer:
B.
Explanation:
mutualism
Describe how the placenta keeps the young alive before birth.
Answers
Answer:
Blood from the mother passes through the placenta, filtering oxygen, glucose and other nutrients to your baby via the umbilical cord. The placenta also filters out substances that could be harmful to your baby and removes carbon dioxide and waste products from your baby's blood.
Explanation:
hope this helps loll!
Describe the mechanism of glycolysis in detail
Answers
The process of Glycolysis is a catabolic process in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .
Mechanism Of Glycolysis
The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol
Preparatory phase refers to the generation of two molecules of glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .
Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate .
Both the phases of glycolysis takes place in the cytoplasm and there are three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .
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\The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution.
A 2-column table labeled Paramecium Contractile Vacuole Contractions has 5 rows. The first column is labeled salt concentration outside paramecium with entries very high, high, medium, low, very low. The second column is labeled contractions per minute with entries 2, 8, 15, 22, 30.
Which statement correctly describes the bars on a bar graph representing the data?
The graph has five bars of equal height.
The bars range from tallest for very high concentration to shortest for very low concentration.
The bar for very low concentration is twice the height of the bar for medium concentration.
The bar for very high concentration is five times the height of the bar for very low concentration.
Answers
The table Paramecium Contractile Vacuole Contractions which correctly describes the bars on a bar graph representing the data is the bars range from tallest for very high concentration to shortest for very low concentration.
The data in the table records the number of contractions per minute of a paramecium's contractile vacuole in response to different salt concentrations in the surrounding environment.
A bar graph representing this data would have five bars, one for each level of salt concentration.
The bars would vary in height according to the number of contractions per minute, with the tallest bar representing the highest salt concentration and the shortest bar representing the lowest salt concentration.
Therefore, the correct statement describing the bars on the bar graph would be: "The bars range from tallest for very high concentration to shortest for very low concentration."
This statement accurately describes how the height of the bars would vary based on the data in the table.
The other statements do not accurately represent the data or the trends observed in the table.
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The picture below shows Enchanted Rock, a pink granite rock formation located in the Llano Uplift ecoregion. This land is most likely changing due to —
A. depressions under the uplift make it sink slightly and crack into pieces.
B. the process of nitrogen fixation, as bacteria release and build up minerals in the granite.
C. the process of exfoliation, a type of erosion that causes slabs of granite to break away.
D. regular earthquakes that shake and break up the granite as they shake the earth.
Answers
Answer: C. The land is in all probability changing because of the course of shedding, a sort of disintegration that makes chunks of stone split away.
What is shedding process in soil?Rocks can expand or crack as a result of rapid temperature changes. This particularly occurs with granitic rocks as they were cooling, as at Yosemite Public Park. Freeze-thaw: Water expands when it freezes. Before winter, moisture that seeps into cracks may freeze, breaking the rocks apart.
What is the course of shedding disintegration?The process of large, flat or curved sheets of rock breaking away from the outcrop as a result of pressure release is known as exfoliation. Cracks and fractures along the sheet are the result of erosion removing the overburden from a rock that was formed at high pressure deep in the Earth's crust.
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Jake is a first grade student with single-sided hearing. He wears a bone-anchored hearing system (BAHS) that facilitates his ability to process sound. Unlike a hearing aid, the BAHS does not amplify sound but filters out background noises that interfere with the ability to process and understand sounds. While the BAHS is effective at filtering out many noises, it cannot filter all of them. What considerations are necessary when grouping students to accommodate Jake's hearing needs?
Answers
A bone-anchored hearing system (BAHS) has the ability to process sound, it filters background noise only. In the grouping of students, every student speaks one by one.
What is a bone-anchored hearing system (BAHS)?A device that is worn behind the ear. Bone-anchored hearing systems are surgically implanted devices, unlike hearing aids.
In contrast to conventional hearing aids, which enhance acoustic signals that enter the ear canal, they treat hearing loss by bone conduction of sound vibrations to the inner ear.
Therefore, speaking in a group makes it difficult to understand everybody's voice.
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Which type of biomolecule is responsible for storing information? A. Proteins
B . Lipids
C. Carbohydrates
D. Nucleic acids
Answers
Answer:
D
Explanation:
Among biomolecules, nucleic acids, namely DNA and RNA, have the unique function of storing an organism's genetic code—the sequence of nucleotides that determines the amino acid sequence of proteins, which are of critical importance to life on Earth.
Answer:
D. Nucleic Acids
Explanation:
also what the guy said in comment section