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Quiz Chapter 10

Cell Biology

QuestionAnswer
Electron transport in mitochondria provides energy to create a proton gradient across the inner membrane.
Because NADH generated in the cytosol cannot enter the mitochondrion, electrons and protons from the NADH in brain cells are transferred into the mitochondrion by __________. glycerol phosphate electron shuttle
ATP synthesis by oxidative phosphorylation in animal cells takes place in the mitochondrial matrix, next to the mitochondrial inner membrane.
The conversion of pyruvate to acetyl coenzyme A requires the activity of the pyruvate dehydrogenase is a decarboxylation reaction is an oxidation reaction is highly exergonic
As a result of glycolysis, pyruvate oxidation and the citric acid cycle, only a small portion of the energy of glucose has been converted to ATP. At this point, the majority of the usable energy is contained in: NADH and FADH2
Cyanide blocks the electron transport system by: binding to cytochrome c oxidase
The electrons generated from the Krebs cycle are transferred to ____________ and then are shuttled to _______________ that serves as final acceptor. NAD+/oxygen
Which molecule binds to acetyl coenzyme A to form a six-carbon sugar in the beginning of the TCA Cycle? oxaloacetate
In the electron transport, which respiratory complex is NOT involved in the flow of electrons from NADH? complex II
ATPs are synthesized in glycolysis and the TCA cycle by: substrate-level phosphorylation
Most of the ATP produced in cellular respiration comes from: oxidation of NADH
What is the "coupler" between the electron transport system and the ATP synthesis A proton gradient that accumulated protons in the inner membrane space
In aerobic cellular respiration, __________ is oxidized and __________ is reduced. glucose, oxygen
The electrons stripped from glucose in cellular respiration end up in _____. water
During ATP synthesis, protons move down their electrochemical gradient through the Fo complex of ATP synthase
The movement of protons through ATP synthase occurs from the intermembrane space to the matrix
Synthesis of ATP via a proton gradient is called chemiosmosis.
After completely breaking down a single molecule of glucose through glycolysis and cellular respiration, how many more ATP molecules does a cell in the skeletal muscle have? 36
In an experiment, mice were fed glucose containing a radioactive carbon atom at position 1. This atom was eventually found in: carbon dioxide
The sequential process of fatty acid catabolism to acetyl CoA is beta-oxidation
Created by: mjs021
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