Chapter 5 Exam Review

Question 1

Catabolic reactions use energy to synthesize large molecules. True or False

Answer 1

False

Question 2

Anabolic reactions involve hydrolysis to split large molecules into smaller ones. True or False

Answer 2

True

Question 3

In newborns, ______ occurs in brown fat.

Answer 3

Thermogenesis

Question 4

Ketone bodies results from

Answer 4

Excessive protein, carbohydrate and fat breakdown

Question 5

The process in which an amine group is transferred from one amino acid to another is called

Answer 5

Transamination

Question 6

Glycolysis converts glucose into ______ molecules

Answer 6

Pyruvic acid

Question 7

Blood glucose concentrations can be maintained by hydrolysis of glycogen in the

Answer 7

Liver

Question 8

The cori cycle converts ______ to pyruvic acid

Answer 8

Acetyl CoA

Question 9

Beta-oxidation produces acetyl CoA molecules from fatty acids. True or False

Answer 9

True

Question 10

The final electron acceptor in aerobic cell respiration is

Answer 10

Oxygen

Question 11

Phosphorylation of glucose “traps” glucose within the cell. True or False

Answer 11

True

Question 12

Anaerobic respiration metabolism regenerate the ______ required for glycolysis

Answer 12

NAD+

Question 13

Acetyl coenzymes A enables the products of glycolysis to enter the citric acid cycle. True or False

Answer 13

True

Question 14

The critic acid cycle occurs in mitochondria. True or False

Answer 14

True

Question 15

Importance of the citric acid cycle in energy production is the formation of significant amounts of

Answer 15

NADH and FADH2

Question 16

The electron transport chain system is responsible for the production of the majority of cellular ATP. True or Flase

Answer 16

True

Question 17

Energy loss during the process of aerobic cellular respiration is given off as

Answer 17

Metabolic heat

Question 18

The final electron acceptor in the electron transport chain system is ________

Answer 18

Oxygen

Question 19

Sweet smelling breath may be the result of elevated ________ in the blood

Answer 19

Acetone

Question 20

The primary site of ketone body synthesis is

Answer 20

The liver

Question 21

Lactic acid is a result of LDH (lactic acid dehydrogenase) mediated ______ of pyruvic acid with the electrons taken from NADH + H+

Answer 21

Reduction

Question 22

In the formation of acidic acid from pyruvic acid, the oxygen and carbon dioxide comes from the oxygen gas. True or False

Answer 22

False

Question 23

The electron transport chain system functions to create a proton gradient across the outer mitochondrial membrane. True or False.

Answer 23

False

Question 24

The cori cycle involves formation of glucose in the liver from lactic acid produced by fermentation in the skeletal muscles. True or False

Answer 24

True

Question 25

Beta-oxidation of an 18 carbon fatty acid will yield _______ acetyl COA molecules

Answer 25

9

Question 26

Fatty acid metabolism

Answer 26

Occurs via beta-oxidation

Question 27

Acetyl CoA

Answer 27

Both can enter the citric acid cycle and can reversibly form ketone bodies

Question 28

What type of tissue is especially dependent on adequate plasma glucose levels?

Answer 28

Nervous

Question 29

Which amino acid serves as a channel through which other amino acids can form keto-acids?

Answer 29

Glutamic acid