Chapter 3 CSCS Bioenergetics Flashcards
the cori cycle involves converting _____ into ______
lactate
glucose
krebs cycle involves shuttling of pyruvate into ______
mitochondria
primary source of atp at rest and during low intensity
oxidative (aerobic) system
primary energy system used for moderate to high intensity activities
glycolytic
system used for low intensity activities
oxidative
range of phosphagen energy systems (exercise time and work ratios)
exercise time: 5-10 seconds
work to rest: 1:12-20
range of fast glycolysis exercise time and rest ratio
exercise time: 15-30S
work to rest: 1:3
range of oxidative system and exercise and work to rest ratio
exercise time: >3
work to rest: 1:1
exercises that are high in volume and muscle group number but are short in rest time increases what hormone level
cortisol
the body stores ___ to ___g of ATP at any one time
80-100
anaerobic glycolysis is AKA…..
fast glycolysis
aerobic glycolysis is AKA….
slow glycolysis
when food is digested it becomes these 3 molecules:
glucose
acetyl coa
free fatty acids
blood sugar can be stored as these three things:
fat
glycogen
energy
what typically occurs with around 50-75% of max oxygen uptake?
lactate threshold
ventilatory threshold
breathing rate increases significantly
length of each energy system
PCr Cycle
Anaerobic Glycolysis
Aerobic Glycolysis
Fat
PCr Cycle: less than 10S Anaerobic Glycolysis: 30S-2M Aerobic Glycolysis: 2M-Several hours Fat: hoursssss
energy systems in order
PCr Cycle
Anaerobic Glycolysis
Aerobic Glycolysis
Fat
what type of storage is fat?
long term storage
workload you work at where you can clear lactate as fast as you can create it
lactate threshold
glucose has how many carbon molecules?
6
what happens to the glucose molecule during aerobic glycolysis?
breaks down into two 3 carbon molecules called pyruvate
what does a anaerobic pyruvate molecule turn into?
lactate
when the pyruvate molecule has oxygen, what is the next step?
krebs cycle
how many atp does aerobic glycolysis give us?
2 net atp
where is the krebs cycle located?
mitochondria
when the pyruvate molecule enters the krebs cycle, what does it turn into?
the pyruvate loses a carbon molecule and turns into acetyl coA
acetyl coA and ________ come together to create ________ during the first step of the cyclical part of the krebs cycle
- oxaloacetate
2. citric acid
how many atp do you net from the krebs cycle?
2 net atp
how many NADH’s do you get per 2 pyruvates in the krebs cycle?
4 each, so 8 in total
rate limiting enzyme
pfk
how many nadh do you get from aerobic glycolysis?
2
how many fadh’s do you get per pyruvate?
1
how many atp do you get in the presence of oxygen from 1 glucose molecule?
38
