Chap 10

Question 1

What is a calorie?

Answer 1

A calorie is a unit of energy used to measure the amount of energy provided by food.

Question 2

What is cellular respiration?

Answer 2

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Question 3

What is the main difference between aerobic and anaerobic respiration?

Answer 3

Aerobic respiration requires oxygen, while anaerobic respiration occurs without oxygen.

Question 4

What is glycolysis?

Answer 4

Glycolysis is the first step of cellular respiration that breaks down glucose into pyruvate, producing a small amount of ATP.

Question 5

True or False: NAD+ is an electron carrier involved in cellular respiration.

Answer 5

True

Question 6

What is the Krebs Cycle also known as?

Answer 6

The Krebs Cycle is also known as the Citric Acid Cycle.

Question 7

Where does the Krebs Cycle take place?

Answer 7

The Krebs Cycle takes place in the mitochondrial matrix.

Question 8

Fill in the blank: The end products of glycolysis are ___ and ATP.

Answer 8

pyruvate

Question 9

What is fermentation?

Answer 9

Fermentation is an anaerobic process that converts sugars into acids, gases, or alcohol.

Question 10

What type of respiration occurs in muscle cells during intense exercise?

Answer 10

Anaerobic respiration.

Question 11

What are the two main types of fermentation?

Answer 11

Lactic acid fermentation and alcoholic fermentation.

Question 12

True or False: The Krebs Cycle occurs in the cytoplasm of the cell.

Answer 12

False

Question 13

What is produced during the Krebs Cycle?

Answer 13

Carbon dioxide, ATP, NADH, and FADH2.

Question 14

Multiple Choice: Which of the following is a product of glycolysis? (A) Oxygen (B) Lactic acid (C) Pyruvate (D) Carbon dioxide

Answer 14

C) Pyruvate

Question 15

What is the role of NAD+ in cellular respiration?

Answer 15

NAD+ acts as an electron carrier, accepting electrons during glycolysis and the Krebs Cycle.

Question 16

Fill in the blank: In aerobic respiration, the final electron acceptor is ___ .

Answer 16

oxygen

Question 17

What process follows glycolysis if oxygen is present?

Answer 17

Aerobic respiration.

Question 18

What is the net gain of ATP from one molecule of glucose during glycolysis?

Answer 18

2 ATP.

Question 19

True or False: Anaerobic respiration produces more ATP than aerobic respiration.

Answer 19

False

Question 20

What is the main advantage of fermentation?

Answer 20

Fermentation allows for energy production without oxygen.

Question 21

What molecule is regenerated in fermentation to allow glycolysis to continue?

Answer 21

NAD+.

Question 22

Multiple Choice: Which of the following is NOT a stage of cellular respiration? (A) Glycolysis (B) Krebs Cycle (C) Electron Transport Chain (D) Photosynthesis

Answer 22

D) Photosynthesis

Question 23

Fill in the blank: The Krebs Cycle takes place in the ___ of the mitochondria.

Answer 23

matrix

Question 24

What is the primary purpose of the Krebs Cycle?

Answer 24

To produce electron carriers (NADH and FADH2) for the electron transport chain.

Question 25

True or False: Glycolysis can occur in the absence of oxygen.

Answer 25

True

Question 26

What byproduct is produced during alcoholic fermentation?

Answer 26

Ethanol and carbon dioxide.

Question 27

What type of organisms typically use anaerobic respiration?

Answer 27

Certain bacteria and yeast.

Question 28

What is the relationship between glycolysis and fermentation?

Answer 28

Fermentation is a process that occurs after glycolysis when oxygen is not available.

Question 29

Multiple Choice: Which of the following is a key feature of aerobic respiration? (A) Produces less ATP (B) Requires oxygen (C) Occurs in the cytoplasm (D) All of the above

Answer 29

B) Requires oxygen

Question 30

What is the purpose of the electron transport chain?

Answer 30

To produce the majority of ATP during cellular respiration using the electrons from NADH and FADH2.

Question 31

Fill in the blank: The end products of aerobic respiration are ___ and water.

Answer 31

carbon dioxide