Biology Review
**Chapter for muscle contraction (1066-1074) Ch. 49
Exam 2: People in Action
Cell Respiration
Muscle Contraction
Regulation of O
2
Supply to Tissues (muscles)
Cell Respiration
-glucose
glycolysis
pyruvate
(no O
2
) Anaerobic step
(O
2
) Into mitochondrion
thru membranes into matrix
Kreb’s cycle (Acetyl
CoA
ATP, NADH, FADH
2
)
Electron Transport Chain (inner membrane; makes
much more ATP when oxidative phosphorylation occurs)
gives off CO
2
and H
2
O
-# molecules in each step (ATP, NADH, FADH
2
), # molecules produced by 1 glucose
Muscle Contraction
-mechanical work (transport work/chemical work)
-**explain how a muscle contracts (i.e. Ca cycle)
-know the subunits (i.e. troponin, tropomyosin etc)
-how they generate a whole muscle contraction from one twitch
-know organismal level to molecular level (i.e. whole muscle fiber to single sarcomere,
and part names)
Regulation of O
2
to Tissues
-PFK molecule, ATP:ADP ratios, phosphocreatine
-model for gas exchange (see paint pic)
-partial pressure
M
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- Winter '07
- Graves
- Cellular Respiration, Electron Transport Chain, Adenosine triphosphate
-
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