Q: Which of the following is the correct net equation for cellular respiration?

$$C_6H_{12}O_6$ + 6 \ \mathrm{O}_2 \rightarrow 6 \ \mathrm{CO}_2 + 6 \ \mathrm{H}_2O + \text{energy}$$

Question 1

Which of the following correctly represents the overall chemical equation for photosynthesis?

Accepted Answer

$$6 \ \mathrm{CO}_2 + 6 \ \mathrm{H}_2O \rightarrow C_6H_{12}O_6$ + 6 \ \mathrm{O}_2$$

Question 2

During the light-dependent reactions of photosynthesis, which molecule acts as the initial electron donor?

Accepted Answer

Water ($$\mathrm{H}_2O)$$

Question 3

Which of the following best describes the role of ATP and NADPH in the Calvin Cycle?

Accepted Answer

They provide energy and reducing power to convert $$\mathrm{CO}_2$$ into glucose.

Question 4

Where in the chloroplast do the light-dependent reactions and the Calvin Cycle occur, respectively?

Accepted Answer

Thylakoid membrane; stroma

Question 5

Which pigment is primarily responsible for absorbing light energy during photosynthesis?

Accepted Answer

Chlorophyll a

Question 6

What is the main purpose of oxygen in the electron transport chain during cellular respiration?

Accepted Answer

It acts as the final electron acceptor, forming water.

Question 7

Which of the following is a correct sequence of the three main stages of cellular respiration?

Accepted Answer

Glycolysis $$\rightarrow$$ Citric Acid Cycle $$\rightarrow$$ Oxidative Phosphorylation

Question 8

How many net ATP molecules are produced per glucose molecule during glycolysis?

Accepted Answer

2

Question 9

Which of the following best explains why a hydrogen ion ($$\mathrm{H}^+) $$gradient is important in the electron transport chain?

Accepted Answer

It provides the energy for ATP synthase to phosphorylate ADP to ATP.

Question 10

Which of the following is a product of alcoholic fermentation?

Accepted Answer

Ethanol

Question 11

A patient is exposed to cyanide, which blocks the transfer of electrons to oxygen in the electron transport chain. What is the most immediate effect on cellular respiration?

Accepted Answer

ATP production by oxidative phosphorylation stops.

Question 12

Which of the following best describes a redox reaction in the context of cellular respiration?

Accepted Answer

Glucose is oxidized and oxygen is reduced.

Question 13

During which stage of cellular respiration is the majority of ATP produced?

Accepted Answer

Oxidative phosphorylation

Question 14

Which of the following is the correct net equation for cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6 \ \mathrm{O}_2 ightarrow 6 \ \mathrm{CO}_2 + 6 \ \mathrm{H}_2O + 	ext{energy}$$

Question 15

In the 'Barf Bag' activity, which process is being modeled and what is the main product detected?

Accepted Answer

Fermentation; carbon dioxide ($$\mathrm{CO}_2)$$

Question 16

Which of the following best explains the role of pyruvic acid in cellular respiration?

Accepted Answer

It is the end product of glycolysis and the starting substrate for the citric acid cycle.

Question 17

Which of the following statements about glycolysis is TRUE?

Accepted Answer

It occurs in the cytoplasm and does not require oxygen.

Question 18

In the floating spinach disk experiment, what is the primary reason disks rise to the surface under light?

Accepted Answer

Oxygen produced during photosynthesis accumulates in the disks, making them buoyant.

Question 19

Which of the following best describes the function of ATP synthase?

Accepted Answer

It uses the energy from a proton gradient to convert ADP and inorganic phosphate into ATP.

Question 20

Which of the following organisms require cellular respiration to survive?

Accepted Answer

All living organisms, including plants, animals, and many microbes

Photosynthesis and Cellular Respiration: Study Guide and Key Concepts

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