pre quiz Flashcards
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what is the relationship between
cellular respiration and photosynthesis
- photosynthesis makes the glucose, which is then broken down in cellular respiration to make ATP (high energy molecule)
what is
glycolysis
stage of cellular respiration
- occurs in the cytoplasm
- doesn’t require oxygen to generate ATP
- an old pathway
what is the
kerbs cycle
stage of cellular respiration
- occurs within mitochondrion
- harvests energy-rich electrons through a cycle of oxidation
- indirectly requires energy
what is the
oxidative phosphorylation
3rd stage of cellular respiration
- electrons passsed to an electron chain to make ATP
- directly requires oxygen
what is
oxidative phosphorylation
- 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
summary of
glycolysis
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
reactions of the
kreb cycle
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
products of
glycolysis & kreb cycle
glucose is entirely consumed to make:
- 4 ATP molecules
- 10 NADH electron carriers
- 2 FADH2 electron carriers
- (6 CO2 as by-products)
what is
electron transport chain
& chemiosmosis
- 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
