Ch.9 Cellular Respiration & Fermentation Flashcards
Acetyl coenzyme A; the entry compound for the citric acid cycle in cellular respiration, formed from a fragment of pyruvate attached to a coenzyme
Acetyl CoA
A catabolic pathway for organic molecules, using oxygen as the final electron acceptor in an electron transport chain & ultimately producing ATP
Aerobic Respiration
Glycolysis followed by the reduction of pyruvate to ethyl alcohol, regenerating NAD+ & releasing carbon dioxide
Alcohol Fermentation
A chemical cycle involving eight steps that completes the metabolic breakdown of glucose molecules begun in glycolysis by oxidizing acetyl CoA to carbon dioxide
Citric Acid Cycle
An energy-coupling mechanism that uses energy stored in the form of a hydrogen ion gradient across a membrane to drive cellular work, such as the synthesis of ATP
Chemiosmosis
A catabolic process that makes a limited amount of ATP from glucose w/o an electron transport chain & that produces a characteristic end product, such as ethyl alcohol or lactic acid
Fermentation
An organism that makes ATP by aerobic respiration if oxygen is present but that switches to anaerobic respiration or fermentation if oxygen is not present
Facultative Anaerobe
A series of reactions that ultimately splits glucose into pyruvate; occurs in almost all living cells serving as the starting point for fermentation or cellular respiration
Glycolysis
Glycolysis followed by the reduction of pyruvate to lactate, regenerating NAD+ w/no release of carbon dioxide
Lactid Acid Fermentation
The catabolic pathways of aerobic & anaerobic respiration, which break down organic molecules & use an electron transport chain for the production of ATP
Cellular Respiration
The complete or partial loss of electrons form a substance involved in a redox reaction
Oxidation
The production of ATP using energy derived from the redox reactions of an electron transport chain
Oxidative Phosphorylation
An organism that only carriers out fermentative or anaerobic respiration
Obligate Anaerobe
The complete or partial addition of electrons to a substance involved in a redox reaction
Reduction