Respiration (chpt. 12)

Question 1

Respiration

Answer 1

The release of energy from food by living cells

Question 2

Word equation for respiration

Answer 2

Glucose + oxygen → carbon dioxide + water + energy

Question 3

What is the function of respiration?

Answer 3

Provide energy

Question 4

Aerobic respiration

Answer 4

Release of energy from food in the presence of oxygen

Question 5

Anaerobic respiration

Answer 5

Release of energy from food when oxygen is not present

Question 6

Fermentation

Answer 6

The anaerobic respiration of sugars

Question 7

Advantages of ATP

Answer 7

• energy readily available
• easily broken down
• energy easily released

Question 8

What stage of respiration occurs in the cytosol?

Answer 8

1. Glycolysis

Question 9

What stage of respiration occurs in the mitochondria?

Answer 9

2. Kreb’s cycle

Question 10

Describe glycolysis

Answer 10

The anaerobic breakdown of glucose into pyruvate

Question 11

Why does lactic acid sometimes form in animal tissue?

Answer 11

Absence of oxygen

Question 12

Explain how Acetyl CoA is produced

Answer 12

Pyruvate loses carbon dioxide

Question 13

Identify a product produced during the Kreb’s cycle that enters the electron transport chain

Answer 13

NADH

Question 14

Name the stage that is common to both anaerobic and aerobic respiration

Answer 14

Glycolysis

Question 15

How many carbon atoms are present ent the end stage of glycolysis?

Answer 15

3

Question 16

Name the product of stage one of respiration

Answer 16

Pyruvate

Question 17

Does the first stage of respiration produce large or small amounts of energy?

Answer 17

Small

Question 18

State one product of the electron transport chain

Answer 18

Water
ATP

Question 19

How many carbon atoms are present in pyruvate?

Answer 19

3

Question 20

Describe the process of glycolysis

Answer 20

Glucose broken down into pyruvate
ADP + phosphate converted into ATP

Question 21

Describe the series of reactions to convert NADH to ATP

Answer 21

High energy electrons passed from NADH to carrier molecules, as electrons passed along electron transport chain, it loses energy which is used to form ATP

Question 22

What is the function of oxygen in respiration

Answer 22

Combines low energy electrons from electron transport chain

Question 23

State the number of carbon atoms in a molecule of acetyl coA

Answer 23

2