pre quiz Flashcards

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1
Q

what is the relationship between

cellular respiration and photosynthesis

A
  • photosynthesis makes the glucose, which is then broken down in cellular respiration to make ATP (high energy molecule)
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2
Q

what is

glycolysis

stage of cellular respiration

A
  • occurs in the cytoplasm
  • doesn’t require oxygen to generate ATP
  • an old pathway
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3
Q

what is the

kerbs cycle

stage of cellular respiration

A
  • occurs within mitochondrion
  • harvests energy-rich electrons through a cycle of oxidation
  • indirectly requires energy
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4
Q

what is the

oxidative phosphorylation

3rd stage of cellular respiration

A
  • electrons passsed to an electron chain to make ATP
  • directly requires oxygen
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5
Q

what is

oxidative phosphorylation

A
  • the use of chemiososmosis and oxygen to generation ATP
  • transfer of hydrogens selectively going through membrane is chemiososmosis
  • oxidatiation makes the energy to push the hydrogen out
  • phosphorylation as hydrogens experience chemiosmosis
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6
Q

summary of

glycolysis

A

glycolysis is a biochemical pathway
- breaks down 6 carbon glucose
- produces 2 pyruvate molecules
- produces a net of 2 ATP
- substrate-level phosphorylation: direct formation of ATP from high energy phosphate & ADP from substrate
- produces 2 NADH from 2 NAD
- doesn’t require oxygen

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7
Q

reactions of the

kreb cycle

A

occurs in the mitochondria
- 3 stages of oxidative respiration
- Accetyl-CoA + 4C molecule = 6-carbon molecule
- removal of 2 carbons (2CO2) produces 2 NADH & 1 ATP
- recycles 4 carbon molecule to make more NADH & FADH2

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8
Q

products of

glycolysis & kreb cycle

A

glucose is entirely consumed to make:
- 4 ATP molecules
- 10 NADH electron carriers
- 2 FADH2 electron carriers
- (6 CO2 as by-products)

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9
Q

what is

electron transport chain
& chemiosmosis

A
  • happens within inner mitochondrial membrane
  • directly consumes oxygen
  • electrons are transported through NADH + FADH2 to protein complexes & electron carriers
  • electrons are used to make proton gradients
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