BSC 300 Lecture Notes - Lecture 10: Flavin Adenine Dinucleotide, Reduction Potential, Intermembrane Space

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graysardine594

9 May 2016

School

University of Alabama

Department

Biological Sciences

Course

BSC 300

Professor

Yoder

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Document Summary

Bsc 300 lecture 10- aerobic respiration and the mitochondrion ii. 2 step process: electron transport chain, flow of protons drives atp production. Energy for atp production provided by electrons in the carriers. About 3 atps per pair from nadh generated during tca. About 2 atps per pair shuttled from cytoplasmic nadh to mitochondrion using the glycerol-3-phospate shuttle (brain) About 3 atps per pair shuttled from cytoplasmic nadh to mitochondrion using the malate-aspartate shuttle (heart and liver) Strong oxidizing agents (like o2) have a high affinity for electrons. Strong reducing agents (like nadh) have a weak affinity for electrons. Redox reactions are accompanied by a decrease in free energy. Electrons are passed along the electron transport chain from one acceptor to another. These energy-releasing reactions are coupled to conformational changes in electron carriers. These changes move protons across the inner membrane into the intermembrane space. Electrons move through the inner membrane via a series of carriers of decreasing redox potential.

Related Questions

Question 1

Which of the following statements regarding photosynthesis and cellular respiration is true?

	A.	Photosynthesis occurs in mitochondria, and cellular respiration occurs in chloroplasts.
	B.	Photosynthesis occurs in chloroplasts, and cellular respiration occurs in mitochondria.
	C.	Photosynthesis occurs in mitochondria and in chloroplasts.

Question 2

How do cells capture the energy released by cellular respiration?

	A.	They produce glucose
	B.	The energy is coupled to oxygen
	C.	They produce ATP

Question 3

During redox reactions

	A.	the loss of electrons from one molecule is called reduction
	B.	electrons are lost from one substance and added to another substance
	C.	protons from one molecule replace the electrons lost from another molecule

Question 4

Oxidation is the ________, and reduction is the ________.

	A.	gain of oxygen; loss of oxygen
	B.	loss of electrons; gain of electrons
	C.	gain of protons; loss of protons

Question 5

During cellular respiration, NADH

	A.	delivers its electron load to the first electron carrier molecule.
	B.	is chemically converted into ATP
	C.	is the final electron acceptor

Question 6

A drug is tested in the laboratory and is found to create holes in both mitochondrial membranes. Scientists suspect that the drug will be harmful to human cells because it will inhibit

	A.	the citric acid cycle only.
	B.	glycolysis only
	C.	the citric acid cycle and oxidative phosphorylation

Question 7

Which of the following metabolic pathways is common in aerobic and anaerobic metabolism?

	A.	glycolysis
	B.	the citric acid cycle
	C.	electron transport chain

Question 8

Which of the following is a result of glycolysis?

	A.	production of CO2
	B.	a net loss of two ATPs per glucose molecule
	C.	conversion of glucose to two three-carbon compounds

BSC 300 Lecture Notes - Lecture 10: Flavin Adenine Dinucleotide, Reduction Potential, Intermembrane Space

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