respiration Flashcards

1
Q

define respiration

A

a series of controlled reactions

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2
Q

what is used for respiration

A

ATP

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3
Q

where does respiration occur

A

in the mitochondria

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4
Q

why does respiration occur in the mitochondria

A

have their own DNA and Ribosmomes to manifacture their own respiratory enzymes
isolated enviroment
has cristea - increase surface area

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5
Q

give features of the mitochondria

A

a space between the inner and outer membrane
outer membrane contains porins that allow ions to move through
inner memrane space called matrix contains DNA RNA and where the krebs cycle occurs

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6
Q

what does the matrix contain

A

DNA and RNA
70s ribsomes

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7
Q

what reaction occurs in the mitochondria

A
  • link reaction
  • krebs cycle
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8
Q

what are the four stages of respiration

A

glycolisis
link reaction
krebs cycle
electron transport chain

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9
Q

where does glycolisis occur

A

in the cytoplasm of the cell

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10
Q

where does the link reaction occur

A

matrix

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11
Q

here does the kreb cycle occur

A

matrix

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12
Q

here does electron transfer chain occur

A

utalises protiens found in the membrane of the crista

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13
Q

why is ATP a good energy source

A
  • it provides instant energy as easily hydrolysed
  • rapid resynthesis
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14
Q

what is phosphorilation

A

adding a phosphate molecule

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15
Q

how does phospyrilation occour in respiration

A

molecule e.g glucose in glycolysis is phosphorilised via addition of atp, wich is hydrolised into atp+pi providing an additional phosphate molecule

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16
Q

where does ADP come from

A

ATP

17
Q

what reaction occurs along the electron transfer chain

A

oxidative
a series of oxidation reactions produce sufficent energy tp form ADP into ATP

18
Q

what are the three Coenzymes in respiration

A

NAD
COA
FAD

19
Q

where is the NAD co enzyme used

A

in the electron transfer chain

20
Q

what is the equation of the reduction of NAD

A

NAD+2H -REVERSE REACTION SYMBOL- NADH+H +

21
Q

what does COA do

A

aids the transition between glycolysis and Krebs cycle

22
Q

how does COA aid transition

A

converts pyrurate to acetyl coenzyme A

23
Q

what happens to FAD

A

FAD accepts hydrogen to form reduced FAD