respiration

Question 1

what are the steps of respiration and where do they occur and products

Answer 1

1- glycolysis, makes 2atp 2 nadh 2 pyrvate in cytoplasm
2-link , makes 2 nadh, 2acetylcoa , 2co2 in matrix
3- krebs, makes 2 atp, 6nadh, 2fadh, 4co2
4-oxidative phosphorylation , makes 34atp in cristae

Question 2

glycolysis

Answer 2

glucose phosporylated into 2 3ctp. uses pi from atp, and this provides ea.
h removed from tp and is given to nad to make nadh
enzymes convert 3c tp into 3c pyruvate
2atp are regenerated

Question 3

link reaction

Answer 3

pyruvate actively transported into matrix.link happens twice. 3c pyruvate gets h removed , given to nad, gets decarboxylated to make 2c acetate . this combines with coa to make acetyl coa.

Question 4

krebs cycle

Answer 4

4c oxaloacetate combines with 2c acetyl coa to make 6c citrate. this gets h removed and decarbocylated to form 5c. this gets h removed and decarboxylated to 4c. this makes atp and goes to another 4c. this gets h removed and given to fad to make 4c. this gets h removed and reforms oxaloacetate

Question 5

what is the electron transport chain

Answer 5

uses nadh and fadh from glyclysis and krebs. they donate electrons from hydrogen atoms to 1st molecule in etc. oxidation reduction reactions along chain. as they pass through they release energy used to actively transport protons into inner membranal space. protons in inner membrane diffuse down grad back into matrix through atp synthase. electrons combine w final electron acceptor oxygen to make water

Question 6

anerobic respiration in plants

Answer 6

after glycolysis the pyruvate gets decarboxylated into ethanal and uses the hs from nadh to reduce to ethanol

Question 7

anerobic respiration in animals

Answer 7

after glycolysis the pyruvate is reduced to lactate using h from nadh.lactate then goes to liver or oxidised to pyruvate

Question 8

why do plants need atp from respiration

Answer 8

in dark, ldr cant happen so atp cant be made
some parts of plant are non photosynthetic
atp is immediate energy source so cant be stored
plants use more atp than whats made in photsynthesis

Question 9

where is nadh made

Answer 9

glyolysis and krebs and link

Question 10

where is nadp reduced

Answer 10

ldr

Question 11

where is atp made

Answer 11

glycolysis krebs ldr

Question 12

where is atp used

Answer 12

glycolysis