respiration

Question 1

what are the 4 stages of aerobic respiration

Answer 1

glycolysis
link reaction
Krebs cycle
oxidative phosphorylation

Question 2

what are the two types of respiration

Answer 2

anaerobic and aerobic

Question 3

what are the main differences between anaerobic and aerobic respiration

Answer 3

aerobic produces more ATP and produces water and CO2

anaerobic produces lactate in mammals and ethanol in plants as well as CO2

Question 4

why is ATP a good energy source for cells

Answer 4

little energy lost as heat

can be rapidly resynthesized

Question 5

where does oxidative phosphorylation occur

Answer 5

in the cristae

Question 6

where does glycolysis occur

Answer 6

in the cytoplasm

Question 7

where does the kreb’s cycle

Answer 7

in the mitochondrial matrix

Question 8

where does in the link reaction occur

Answer 8

in the mitochondria

Question 9

outline the link reaction

Answer 9

pyruvate:
decarboxylated and dehydrogenated to form acetate
acetate then combines with coenzyme A
to form acetyl coenzyme A

Question 10

what are the products of glycolysis

Answer 10

net 2x ATP overall 4xATP
2x reduced NAD
2 x pyruvate

Question 11

what are the products of the link reaction per glucose molecule

Answer 11

2 x CO2
2 x rNAD
2 x acetylcoenzyme A

Question 12

what are the products of the kreb’s cycle

Answer 12

coenzyme A 
oxaloacetate 
2 x CO2 
1 x ATP 
3 X rNAD 
1 X rFAD

Question 13

name two differences of anaerobic respiration in plant and animal cells

Answer 13

in plant cells pyruvate is decarboxylated and dehydrogenated and ethanol is produced
in animal cells pyrvuate is only dehydrogenated and lactate is produced

Question 14

what is the affect of mitochondrial disesases

Answer 14

muscle weakness
as less ATP produced so anaerobic respiration occurs to make up for ATP shortage so lactate produced
causing muscle weakness