Q: Which equation correctly represents the hydrolysis of ATP?

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$$

Question 1

Which of the following best describes a controlled experiment in biological research?

Accepted Answer

An experiment where all variables are kept constant except the one being tested.

Question 2

A scientist wants to test the effect of a new drug on blood glucose levels. Which of the following would be the best way to minimize bias in the experiment?

Accepted Answer

Randomly assign subjects to control and experimental groups.

Question 3

Which statement correctly explains how monomers are joined to form polymers?

Accepted Answer

Monomers are joined by dehydration synthesis, releasing water as a byproduct.

Question 4

Which of the following best describes the role of enzymes in metabolism?

Accepted Answer

Enzymes lower the activation energy of metabolic reactions, increasing reaction rates.

Question 5

A patient with type 1 diabetes has high blood glucose because:

Accepted Answer

Insulin-producing cells are dysfunctional and do not secrete insulin.

Question 6

Which of the following is a major difference between passive transport and active transport across cell membranes?

Accepted Answer

Active transport requires energy input, while passive transport does not.

Question 7

Which equation correctly represents the hydrolysis of ATP?

Accepted Answer

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$$

Question 8

During aerobic respiration, which stage produces the most ATP?

Accepted Answer

Electron transport chain and oxidative phosphorylation

Question 9

Which of the following is true about osmosis?

Accepted Answer

Osmosis is the movement of water across a semipermeable membrane from low solute concentration to high solute concentration.

Question 10

Which of the following best explains why oxygen is necessary for oxidative phosphorylation?

Accepted Answer

Oxygen acts as the final electron acceptor in the electron transport chain.

Question 11

Which of the following statements about photosynthesis is correct?

Accepted Answer

The light reactions produce ATP and NADPH, which are used in the Calvin cycle.

Question 12

Which of the following is a carbon sink in the context of the carbon cycle?

Accepted Answer

A forest that absorbs more carbon dioxide than it releases.

Question 13

Which of the following best describes the function of coenzymes in cellular respiration?

Accepted Answer

Coenzymes transfer electrons between molecules, facilitating redox reactions.

Question 14

Which of the following is a correct description of signal transduction in insulin signaling?

Accepted Answer

Insulin binds to its receptor, triggering a cascade that increases glucose uptake in cells.

Question 15

Which of the following is a correct statement about the difference between aerobic and anaerobic respiration?

Accepted Answer

Aerobic respiration uses oxygen and produces more ATP than anaerobic respiration.

Question 16

Which of the following is a correct formula for photosynthesis?

Accepted Answer

$$6\mathrm{CO}_2 + 6\mathrm{H}_2\mathrm{O} + 	ext{light energy} ightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\mathrm{O}_2$$

Question 17

A mutation in the gene coding for a membrane protein causes cystic fibrosis. Which of the following best explains the cellular consequence?

Accepted Answer

Defective chloride ion transport leads to thick mucus buildup in organs.

Question 18

Which of the following best explains why a food is considered a macromolecule?

Accepted Answer

It contains large molecules made of repeating monomer units.

Question 19

Which of the following is a correct statement about the relationship between hypothesis and theory in science?

Accepted Answer

A hypothesis is a testable prediction, while a theory is a well-supported explanation based on evidence.

Question 20

Which of the following best explains the importance of replicates in scientific experiments?

Accepted Answer

Replicates increase the reliability and statistical significance of experimental results.

General Biology Study Guide: Core Concepts and Processes

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