Chapter 3 CSCS Bioenergetics

Question 1

the cori cycle involves converting _____ into ______

Answer 1

lactate

glucose

Question 2

krebs cycle involves shuttling of pyruvate into ______

Answer 2

mitochondria

Question 3

primary source of atp at rest and during low intensity

Answer 3

oxidative (aerobic) system

Question 4

primary energy system used for moderate to high intensity activities

Answer 4

glycolytic

Question 5

system used for low intensity activities

Answer 5

oxidative

Question 6

range of phosphagen energy systems (exercise time and work ratios)

Answer 6

exercise time: 5-10 seconds

work to rest: 1:12-20

Question 7

range of fast glycolysis exercise time and rest ratio

Answer 7

exercise time: 15-30S

work to rest: 1:3

Question 8

range of oxidative system and exercise and work to rest ratio

Answer 8

exercise time: >3

work to rest: 1:1

Question 9

exercises that are high in volume and muscle group number but are short in rest time increases what hormone level

Answer 9

cortisol

Question 10

the body stores ___ to ___g of ATP at any one time

Answer 10

80-100

Question 11

anaerobic glycolysis is AKA…..

Answer 11

fast glycolysis

Question 12

aerobic glycolysis is AKA….

Answer 12

slow glycolysis

Question 13

when food is digested it becomes these 3 molecules:

Answer 13

glucose
acetyl coa
free fatty acids

Question 14

blood sugar can be stored as these three things:

Answer 14

fat
glycogen
energy

Question 15

what typically occurs with around 50-75% of max oxygen uptake?

Answer 15

lactate threshold

Question 16

ventilatory threshold

Answer 16

breathing rate increases significantly

Question 17

length of each energy system

PCr Cycle
Anaerobic Glycolysis
Aerobic Glycolysis
Fat

Answer 17

PCr Cycle: less than 10S
Anaerobic Glycolysis:
30S-2M
Aerobic Glycolysis:
2M-Several hours
Fat:
hoursssss

Question 18

energy systems in order

Answer 18

PCr Cycle
Anaerobic Glycolysis
Aerobic Glycolysis
Fat

Question 19

what type of storage is fat?

Answer 19

long term storage

Question 20

workload you work at where you can clear lactate as fast as you can create it

Answer 20

lactate threshold

Question 21

glucose has how many carbon molecules?

Answer 21

6

Question 22

what happens to the glucose molecule during aerobic glycolysis?

Answer 22

breaks down into two 3 carbon molecules called pyruvate

Question 23

what does a anaerobic pyruvate molecule turn into?

Answer 23

lactate

Question 24

when the pyruvate molecule has oxygen, what is the next step?

Answer 24

krebs cycle

Question 25

how many atp does aerobic glycolysis give us?

Answer 25

2 net atp

Question 26

where is the krebs cycle located?

Answer 26

mitochondria

Question 27

when the pyruvate molecule enters the krebs cycle, what does it turn into?

Answer 27

the pyruvate loses a carbon molecule and turns into acetyl coA

Question 28

acetyl coA and ________ come together to create ________ during the first step of the cyclical part of the krebs cycle

Answer 28

1. oxaloacetate

2. citric acid

Question 29

how many atp do you net from the krebs cycle?

Answer 29

2 net atp

Question 30

how many NADH’s do you get per 2 pyruvates in the krebs cycle?

Answer 30

4 each, so 8 in total

Question 31

rate limiting enzyme

Answer 31

pfk

Question 32

how many nadh do you get from aerobic glycolysis?

Answer 32

2

Question 33

how many fadh’s do you get per pyruvate?

Answer 33

1

Question 34

how many atp do you get in the presence of oxygen from 1 glucose molecule?

Answer 34

38