Cellular Respiration Flashcards
cellular respiration
a redox reaction; the transfer of electrons releases part of their potential energy which is used to generate ATP; C6H1206 + 6O2 = 6CO2 + 6H2O + ENERGY
oxidation
the partial loss of electrons from glucose
chemiosis
Occurs in oxidative phosphorylation; Exergonic flow of H+ drives the regeneration of ATP
glycolysis
A glucose is split into two pyruvate; 2 NADH and 2 H+ are produced; 2 ATP is regenerated
dehydrogenase
Enzymes; remove a pair of hydrogen atoms from the substrate
citric acid cycle
Conversion of pyruvate to acetyl coenzyme (acetyl CoA); 2 ATP, 6 NADH and 2 FADH2 per glucose are formed
pyruvate
comes from glucose in glycolysis; 1 Glucose (6C) = 2 3C
reduction
the partial gain of electrons to oxygen
electron transport chain
Electrons from NADH and FADH travel down to oxygen; Energy released is used to bukd a concentration gradient of H+ across the membrane
FAD+
produced in the citric acid cycle
oxidative phosphorylation
electron transport chain and chemiosis
acetyl CoA
acetyl coenzyme; converts from pyruvates during citric acid cycle
NAD+
Nicotinamide adenine dinucleotide; electron acceptor; turns into NADH
Which of the following statements is correct about an oxidation-reduction (redox)?
The molecule that is reduced gains electrons; The molecule that is oxidized loses electrons
What is the term used for the metabolic pathway in which glucose is degraded to carbon dioxide and water?
cellular respiration
