ch 3

Question 1

discuss the function of the cell membrane, nucleus, and mitochondria

Question 2

define the following terms: endergonic reactions, exergonic reactions, coupled reaction and bioenergetics

Question 3

scribe the role of enzymes as catalysis in cellular chemical reactions

Question 4

list and discuss the nutrients that are used as fuels during exercise

Question 5

describe the structure and function of ATP in the cell

Question 6

discuss the biochemical pathways involved in anaerobic ATP production

Question 7

describe how the metabolic pathways involved in bioenertics are regulated

Answer 7

“Metabolic pathways in bioenergetics are regulated by hormonal signals, substrate availability, and enzyme activity. Hormones such as GH, cortisol, epinephrine, and norepinephrine increase lipolysis to mobilize free fatty acids for energy and promote glycogenolysis to release glucose for ATP production. Additionally, enzymes within pathways like glycolysis and the Krebs cycle are regulated by feedback mechanisms—for example, high ATP levels inhibit phosphofructokinase to slow glycolysis, while high ADP or AMP levels activate it to increase ATP production.”

Question 8

discuss the interaction between aerobic and anaerobic ATP production during ecercise

Question 9

identify the exams that are considered rate limiting in glycolysis and the citric acid cycle

Answer 9

PFK-1

Question 10

acetyl-CoA

Question 11

activation energy

Question 12

adenosine diphosphate (ADP)

Question 13

adenosine triphosphate (ATP)

Question 14

aerobic

Question 15

anaerobic

Question 16

ATPase

Question 17

ATP-PC system

Question 18

beta oxidation

Question 19

bioenergetics

Question 20

cell membrane

Question 21

chemiosmotic hypothesis

Question 22

citric acid cycle (also called the Krebs cycle)

Question 23

coupled reactions

Question 24

cytoplasm

Question 25

electron transport chain

Question 26

endergonic reactions

Question 27

enzymes

Question 28

exergonic reactions

Question 29

FAD

Question 30

lucose

Question 31

glycogen

Question 32

glycolysis is

Question 33

glycogensisis

Question 34

inorganic

Question 35

Pi

Question 36

isocirtatite dehydogranase

Question 37

Krebs cycle

Question 38

lactate

Question 39

metabolism

Question 40

molecular biology

Question 41

NAD

Question 42

PFK

Question 43

PC

Question 44

oxidation

Question 45

oxidative phosphorylation