Answers 26-27 RPA- Biology 12 CRCellular Respiration

Cellular Respiration — Unit test Answers

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The illustration below shows the steps of meiosis I. What is the step that is labeled D?

metaphase I

metaphase II

telophase II

telophase I

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A scientist hypothesized that oxygen atoms from both carbon dioxide and water are used to make glucose during photosynthesis. However, experimental results using oxygen isotopes showed that all of the oxygen from the water ended up in the oxygen molecules that were produced. None of the oxygen from water was found in glucose. What should the scientist do to best gain scientific understanding of this topic?

Analyze the results, and change the experimental methods to retest the hypotheses in a different way.

Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.

Analyze the procedural errors that took place in the experiment, and summarize these in a conclusion statement.

Repeat the experiment and adjust new data to support the original hypothesis.

The chemical reaction equation of photosynthesis is shown here:6CO2 + 6H2O C6H12O6 + 6O2What information is not given in this equation.

It does not show if the reaction is reversible

It does not show the reactants needed for the reaction

It does not show that photosynthesis consists of many separate steps.

It does not show the number of molecules required to produce glucose.

The diagram shows a phase of mitosis.Which does the letter A represent in the diagram?

centriole

chromosome

centromere

spindle

Which component of Earth’s atmosphere is decreased due to photosynthesis?

ozone

oxygen

hydrogen peroxide

carbon dioxide

What is the end result of meiosis?

four identical daughter cells

four different daughter cells

two identical daughter cells

two different daughter cells

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Cellular Respiration — Unit test Answers

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