Bioenergetics Basic Energy Systems Flashcards
what are te 3 atop synthesis pathways
ATP - PCr
Glycolytic
Oxidative
How long is just ATP last, what is it used for
4 seconds
maybe a golf swing
How longis ATP PCr last, what is it used for
15-20s
short sprints
how long is ATP,PCR, and Glycolysit last, what is it used for
2 min
basketball
how long is oxidative, what is it used for
long time
long dist. running
are you usually only getting energy from 1 system
no, there are always contributions from all 3 systems, never solely just one
where does ATP PCR occur
in the cytosol of the cell
is atp pcr anaerobic or aerobic
anaerobic
Is ATP PCr the most powerful or highest capacity
most powerful, least capacity
main enzyme for ATP PCr
Creatine Kinase
RLE in ATP-PCr
Phosphocreatine
is anaerobic glycolysis fast or slow
fast
how many steps are there in anaerobic glycolysis
10
what is anaerobic glycolysis breaking down
glucose of glycogen
where does anaerobic glycolysis occur in the ceell
the cytosol/cytoplasm
what happens in the cytoplasm of a cell/which 2 energy systems
ATP-PCR and anaerobic glycolysis
RLE in anaerobic glycolysis
phosphofructokinase (Pfk)
what steps are ATP used in anaerobic glycolysis
steps 1 and 3
what steps are ATP produced in anaerobic glycolysis
Steps 7 and 10
what step is NaDH produced in anaerobic glycolysis
step 6
what is special about everything after step 4 of anaerobic glycolysis
everything happens 2 times
net gain of 1 glucose/glycogen through anaerobic glycolysis
2/3
what are the fates of lactate
liver (glucose for energy with cori cycle), heart (oxidized for energy),
or muscles (by MC transporters to pyruvate for energy)
what are the fates of pyruvate
lactate
or
acetyl coA
lactate is pyruvate with an extra what
Hydrogen molecule
does lactate cause fatigue?
no, it is because of the H+
why is the conversion os pyruvate to lactate helpful
it allows us to help recycle the NAD
does lactate have any oxidative capabilities
some
do slow twitch muscles have a low or high oxidative capacity
high
do fast twitch muscles have a low or high oxidative capacity
low
what converts Pyruvate to Acetyl coA
Pyruvate dehydrogenase (Pdh)
where in the cell does aerobic glycolysis occur
in the mitochondria
What is the first step in aerobic glycolysis
Acetyl coA
cytosol steps —-> what——> mitochondria steps
acetyl coA
