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

Question 1

Which of the following best describes the primary function of cellular respiration in living organisms?

Accepted Answer

To convert food molecules into ATP, providing a universal source of energy.

Question 2

Which equation correctly represents the overall process of aerobic cellular respiration?

Accepted Answer

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

Question 3

Which of the following statements about ATP is correct?

Accepted Answer

ATP consists of adenine, a ribose sugar, and three phosphate groups.

Question 4

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

Accepted Answer

Electron transport chain and ATP synthesis

Question 5

Which molecule acts as an electron carrier by picking up electrons and hydrogen ions during cellular respiration?

Accepted Answer

NAD+

Question 6

A person is sprinting and their muscles begin to run low on oxygen. Which process will their muscle cells use to continue producing ATP?

Accepted Answer

Anaerobic respiration (fermentation)

Question 7

Which of the following best explains why males generally require more calories than females?

Accepted Answer

Males typically have higher basal metabolic rates and more muscle mass.

Question 8

Which of the following is NOT a product of glycolysis?

Accepted Answer

Oxygen

Question 9

What is the main difference between aerobic and anaerobic respiration?

Accepted Answer

Aerobic respiration requires oxygen, while anaerobic respiration does not.

Question 10

Which of the following best describes the role of ATP synthase in cellular respiration?

Accepted Answer

It synthesizes ATP as H+ ions pass through it.

Question 11

A person with a BMI of 32 would be classified as:

Accepted Answer

Moderately obese

Question 12

Which of the following is a health risk associated with being underweight?

Accepted Answer

Anorexia and increased risk of mortality

Question 13

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

Accepted Answer

Glycolysis → Citric acid cycle → Electron transport chain

Question 14

Which of the following best explains why lactic acid builds up in muscles during intense exercise?

Accepted Answer

Oxygen is limited, so cells switch to fermentation to regenerate NAD+.

Question 15

Which of the following is a real-life example of fermentation by microbes?

Accepted Answer

The production of yogurt from milk

Question 16

Which of the following statements about basal metabolic rate (BMR) is correct?

Accepted Answer

BMR is the energy use of a resting, wakeful person.

Question 17

Which of the following best describes the process of phosphorylation in cellular respiration?

Accepted Answer

A phosphate group is transferred from ATP to another molecule, transferring energy.

Question 18

Which of the following is a consequence of severe obesity (BMI \u003e 35)?

Accepted Answer

Increased risk of heart disease, stroke, and type 2 diabetes

Question 19

Which of the following best explains why yo-yo dieting is not recommended for obesity prevention?

Accepted Answer

It can lead to long-term metabolic changes and increased health risks.

Question 20

Which of the following is a correct statement about the breakdown of proteins and fats during cellular respiration?

Accepted Answer

Proteins and fats can be broken down and enter cellular respiration at different points.

Cellular Respiration and Metabolism: Study Notes for General Biology

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