EBIO 1210 Lecture Notes - Lecture 7: Citric Acid Cycle, Electron Acceptor, Atp Synthase

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silverturtle161

25 Oct 2016

School

CU-Boulder

Department

Ecology & Evolutionary Biology

Course

EBIO 1210

Professor

Dr.William Adams, Dr.Samuel Flaxman

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Document Summary

Respiration: principles; energy flow in ecosystems; aerobic cellular respiration. Place cellular respiration into the context of energy and carbon flow between producers and consumers; identify the overall inputs and outputs of cellular respiration. Predict changes in the binding capacity of hemoglobin for o2 and co2. Place cellular respiration (atp formation) into the context of cellular work. Locate glycolysis, the citric acid cycle, and electron transport to cytosol, mitochondrial matrix, and inner mitochondrial membranes, respectively. Identify the h shuttle nadh as the link between carbon conversion reactions (glycolysis and citric acid cycle) and mitochondrial atp formation in cellular respiration. Identify the terminal electron acceptor of the mitochondrial electron transport chain and its essential role in energy metabolism. Identify the following as energy-rich states in cellular respiration: c-h bonds in food molecules; Relate the link between mitochondrial electron transport and atp synthesis to the model of the hydroelectric dam, and identify active and passive transport of h+ in mitochondria.

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

1.Oxygen that is consumed during cellular respiration is returned to the environment once it has been combined with which of the following substances?

	ATP or inorganic phosphates
	elemental carbon
	nitrates or sulfates
	glucose or nitrogen
	carbon or hydrogen

2.Redox reactions involving Fe2+ and Fe3+ occur during aerobic cellular respiration. Where do these reactions take place?

	Krebs cycle
	glycolysis
	the electron transport chain
	the outer mitochondrial membrane
	the cell membrane

3.The alternate fates of pyruvate in various organisms is primarily due to

	optimizing the concentration of important biochemical intermediates
	regenerating NAD+ for further reduction in the cytoplasm
	maximizing ATP production in the mitochondrion
	maximizing electron flow through the electron transport chain
	none of the above

rubyreindeer792

What is substrate-level phosphorylation

? What is oxidative phosphorylation

? Explain how cellular respiration produces ATP from molecules with high potential energy, such as glucose

? Describe the four components of cellular respiration? What goes into each and comes out of each?

? What is fermentation? How are cellular respiration and fermentation regulated?

? Describe how fermentation operates in the absence of the electron transport chain?

? What does cellular respiration do? What is the chemical equation? ? What is the role of the electron carriers NADH and FADH2

? What is the final electron acceptor of aerobic respiration?

? What is the difference between aerobic and anaerobic respiration?

? What does the enzyme phosphofructokinase do and how is it regulated?

? What is acetyl CoA?

? Where do all of the processes involved in cellular respiration take place within the cell?

? What is ATP synthase and what is its role? ? What is cytochrome C and ubiquinone (Q)? What do these do?

? What is chemiosmosis and how does it generate ATP?

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EBIO 1210 Lecture Notes - Lecture 7: Citric Acid Cycle, Electron Acceptor, Atp Synthase

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