Unit 3 - Class 2 Flashcards
Mastery
Cellular Respiration occurs in three main stages
Glycosis (cytosol) , Citric Acid Cycle (Matrix) , Oxidative Phosphorylation (cristae)
Stage 1
Glycolysis (splitting of sugar)
Stage 1 step one
starts with single molecule of Glucose
(6 carbons)
Stage 1 step two
Oxidizes into two 3-carbon molecules called pyruvate
Stage 1 step three
NAD+ to NADH (e- carrier)
Stage 1 step four
Generates 2 ATP molecules
Substrate level Phosphoryalation
energy release during Glycosis used makeing 2 ATP molecules
Glycosis how many main phases?
2 main phases
Glycosis - investment phase
2 ATP molecules used energizing glucose molecule
Glycosis - harvest phase
Forms 2 NADH, 4 ATP molecules, 2 pyruvates
Glycosis after main phases
Net Gain 2 ATP for 1 glucose
Where Cellular Respiration Stages 2 + 3?
take place in Mitochondrion
Stage 2
Pyruvate Oxidation, citric acid cycle
Pyruvate oxidation +Citric Acid cycle (S-1) no order
Pyruvate is oxidized to Acytel (2 carbon compound)
Pyruvate Oxidation + citiric Acid Cycle (S-2) no order
Acytel combines with coenzyeme A to make Acytel CoA
Pyruvate Oxidation + Citric Acid Cycle (S-3) no order
uktimatly - generates NADH and CO2
Pyruvate Oxidation + Citric Acid Cycle (1)
Acetyl enters the citric acid cycle / Krebs cycle
P O + C A C (2)
Krebs cycle - completes oxidation (loss of electrons) of organic molecules
Stage 2 - P O and C A C (3)
generates
Generates 6 NADH, 2 ATP 2 FADH, 4 CO2 per Glucose
Stage 3 - Oxidative Phosphorylation (ETC and Chesmiosmosis) (1) ETC
ETC - series of redox reaction (reactions transporting electrons)
Stage 3 (2) Transport of Electrons
through ETC - provides energy establishing H+ higher concentration in inner membrane space
Stage 3 (3) Chesmiosmosis
Chesmiosmosis = H+ gradient potential energy - drives ATP synthesis
Stage 3 - NADH and FADH
shuttle their high-energy electrons to the ETC
ETC
Transfroms energy of e- to the energy of H+ gradient (driving ATP synthesis in cells)
Where Stage 1
occurs in the cytosol of cytoplasm - only step outside the mitochondria