Q: Which of the following best describes the overall chemical equation for aerobic cellular respiration in plants?

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{energy (ATP)}$$

Question 1

Which of the following best describes the overall chemical equation for aerobic cellular respiration in plants?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 ightarrow 6CO_2 + 6H_2O + 	ext{energy (ATP)}$$

Question 2

Where in the plant cell does the Krebs cycle occur?

Accepted Answer

Mitochondrial matrix

Question 3

Which stage of cellular respiration produces the greatest net yield of ATP?

Accepted Answer

Electron transport chain and chemiosmosis

Question 4

A scientist wants to measure the rate of respiration in a plant using a respirometer. What modification must be made to ensure only respiration is measured and not photosynthesis?

Accepted Answer

Place the apparatus in the dark

Question 5

During glycolysis, one molecule of glucose is converted into two molecules of which compound?

Accepted Answer

Pyruvate

Question 6

Which of the following is the correct sequence of events in aerobic cellular respiration?

Accepted Answer

Glycolysis → Krebs cycle → Electron transport chain

Question 7

What is the primary role of oxygen in the electron transport chain?

Accepted Answer

To act as the final electron acceptor, forming water

Question 8

If a plant cell is deprived of oxygen, which process will allow it to continue producing ATP?

Accepted Answer

Fermentation

Question 9

How many net ATP molecules are produced from one molecule of glucose during glycolysis?

Accepted Answer

$$2$$

Question 10

Which of the following best explains why plants need both photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in glucose, while cellular respiration releases energy for cellular work

Question 11

Which molecule is regenerated during fermentation to allow glycolysis to continue in the absence of oxygen?

Accepted Answer

NAD+

Question 12

What is the main difference between the Calvin cycle and the Krebs cycle?

Accepted Answer

The Calvin cycle fixes carbon dioxide, while the Krebs cycle releases carbon dioxide

Question 13

Which of the following is a product of the Krebs cycle that is used in the electron transport chain?

Accepted Answer

NADH

Question 14

A toxin blocks the function of ATP synthase in the inner mitochondrial membrane. What is the most immediate effect on the cell?

Accepted Answer

ATP production by oxidative phosphorylation ceases

Question 15

Which of the following best describes chemiosmosis in cellular respiration?

Accepted Answer

The synthesis of ATP as protons flow through ATP synthase

Question 16

If a plant is exposed to cyanide, which inhibits cytochrome c oxidase in the electron transport chain, what will be the result?

Accepted Answer

ATP production by the electron transport chain will stop

Question 17

Which of the following is NOT a product of aerobic cellular respiration?

Accepted Answer

Oxygen

Question 18

How does the structure of the inner mitochondrial membrane contribute to its function in cellular respiration?

Accepted Answer

It increases surface area for electron transport chain complexes

Question 19

Which of the following best explains why the net yield of ATP from one glucose molecule is less in anaerobic respiration than in aerobic respiration?

Accepted Answer

Anaerobic respiration does not include the electron transport chain

Question 20

A plant cell is poisoned so that it cannot regenerate NAD+. Which process will be directly affected first?

Accepted Answer

Glycolysis

Plant Cellular Respiration: Pathways, Mechanisms, and Integration with Photosynthesis

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