Chapter 9: Cellular Respiration Flashcards
What is the equation for cellular respiration?
C 6 H 12 O 6 + 6 O 2 –> 6 CO 2 + 6 H 2 O + ATP
3 Steps (in order)
Glycolysis, Citric Acid Cycle (Kreb’s Cycle), Electron transport and oxidative phosphorylation
Where does CR take place?
mitochondria
Glycolysis: major reactants
Glucose, 2 ATP (required to start process)
Glycolysis: major products
Pyruvate (2CH3COCOO-), 4 ATP (net 2 via SLP)
Glycolysis takes place in…
cytoplasm
Kreb’s Cycle: major reactants
Pyruvate, oxaloacetate
Kreb’s Cycle: major products
CO2, oxaloacetate (not consumed), 2 ATP (via SLP)
Kreb’s Cycle takes place in…
Mitochondrial matrix
Electron Transport and Oxidative Phosphorylation: major reactants
NADH/FADH2, O2
Electron Transport and Oxidative Phosphorylation: major products
H2O, 28 ATP (via O.P.)
Electron Transport and Oxidative Phosphorylation takes place in…
inner membrane and intermembrane space
What is substrate-level phosphorylation (SLP)?
a mechanism of ATP formation involving the transfer of a phosphate (Pi) from a donor molecule to ADP which forms ATP
ATP Synthase
An enzyme that utilizes the energy from an electrochemical gradient of protons or sodium ions to synthesize ATP. It moves like a rotating motor to physically combine ADP+P to make ATP.
What is it called when there is differing proton concentrations across a membrane?
a chemiosmotic gradient
