Respiration Flashcards
1
Q
Need for respiration
A
- produces ATP for: active transport, metabolic reactions, muscle contraction
- releases heat energy for thermal regulation
2
Q
mitochondria structure
A
- double membrane
- folded inner membrane forms cristae
- fluid matrix(w DNA, respiratory enzymes, lipids, proteins)
3
Q
site of glycolysis
A
-cytoplasm
4
Q
site of link reaction
A
-mitochondrial matrix
5
Q
site of krebs cycle
A
-mitochondrial matrix
6
Q
site of oxidative phosphorylation
A
-membrane of cristae
7
Q
role of oxygen
A
-final oxygen acceptor in electron transport chain (produces water as a byproduct)
8
Q
benefits of anaerobic respiration
A
- production of ethanol/lactate converts NADH back to NAD so glycolysis can continue (maximum yield)
- ATP still produced
9
Q
relative energy of substrates
A
- glucose 16kJg-1
- lipid 39kJg-1
- protein 17kJg-1
10
Q
respiratory quotients of substrates
A
- carbohydrates 1.0
- protein 0.9
- fat 0.7
11
Q
formula for respiratory quotients
A
-co2 produced divided by o2 consumed
12
Q
importance of coenzymes in cellular respiration
A
- NADH carries electrons to electron transport chain
- NADH carries hydrogen ions for oxidative phosphorylation
- FADH carries hydrogen ions for oxidative phosphorylation
- coenzyme A carries acetate to krebs cycle
