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

$$ \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{energy} $$

Question 1

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

Accepted Answer

$$ \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy} $$

Question 2

During glycolysis, what is the net gain of ATP molecules produced per molecule of glucose?

Accepted Answer

$$ 2 $$

Question 3

Which molecule acts as the final electron acceptor in the electron transport chain during aerobic cellular respiration?

Accepted Answer

Oxygen ($$ \mathrm{O_2$} )$$

Question 4

What is the primary role of NAD+ in cellular respiration?

Accepted Answer

To act as an electron carrier, accepting electrons during redox reactions

Question 5

Which process directly produces the most ATP during cellular respiration?

Accepted Answer

Oxidative phosphorylation

Question 6

Where in the eukaryotic cell does glycolysis occur?

Accepted Answer

Cytoplasm

Question 7

Which of the following best describes substrate-level phosphorylation?

Accepted Answer

The direct transfer of a phosphate group from a substrate to ADP to form ATP

Question 8

After glycolysis, pyruvate is converted to acetyl CoA before entering the citric acid cycle. Which of the following is NOT produced during this conversion?

Accepted Answer

FADH2

Question 9

During the citric acid cycle, how many NADH molecules are produced per turn of the cycle?

Accepted Answer

$$ 3 $$

Question 10

Which of the following statements about the electron transport chain is correct?

Accepted Answer

It creates a proton gradient across the inner mitochondrial membrane

Question 11

Chemiosmosis refers to:

Accepted Answer

The movement of protons down their concentration gradient to drive ATP synthesis

Question 12

Which of the following is a product of lactic acid fermentation?

Accepted Answer

Lactate

Question 13

In alcohol fermentation, what is the fate of pyruvate?

Accepted Answer

It is converted to ethanol and CO2

Question 14

Which of the following best explains why ATP is required for the preparatory steps of glycolysis?

Accepted Answer

ATP provides the energy to phosphorylate glucose, making it more reactive

Question 15

Which of the following is TRUE about fermentation?

Accepted Answer

It allows cells to produce ATP in the absence of oxygen

Question 16

Which molecule is reduced during cellular respiration?

Accepted Answer

Oxygen ($$ \mathrm{O_2$} )$$

Question 17

A patient is diagnosed with a mitochondrial disorder that impairs the electron transport chain. Which of the following would most likely be observed?

Accepted Answer

Decreased ATP production via oxidative phosphorylation

Question 18

Which of the following is NOT a stage of cellular respiration?

Accepted Answer

Photosynthesis

Question 19

If a cell is deprived of oxygen, which process will continue to function?

Accepted Answer

Glycolysis

Question 20

Which of the following statements best compares fermentation and cellular respiration?

Accepted Answer

Fermentation produces less ATP per glucose molecule than cellular respiration

Cellular Respiration and Fermentation: Study Notes

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