BIOL 1001 Chapter : Chapter 8 Harvesting Energy Part 2 Of 2 For 2 26

8 views5 pages

azuremammoth471

15 Mar 2019

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

Aerobic pathway occurs only if oxygen is present. Cellular respiration is a 3 stage process: matrix reactions. The krebs cycle (citric acid cycle: electron transport chain, chemiosmosis. 2 pyruvate (from 1 glucose) enter the mitochondria matrix. The krebs cycle is a cycle because it starts and ends with the same molecule: oxaloacetate (remember the calvin cycle?) Also known as citric acid cycle- citrate is 1st molecule. A series of 7 reactions each catalyzed by a different enzyme. Oxaloacetate is regenerated with each turn of the wheel. So far, the cell has only gained 4 total atp from 1 glucose. ** 2 net atp from gycolysis and 2 atp from the krebs cycle. But the cell has also gained lots of charged electron carriers. Per 1 glucose molecule 10 nadh and 2 fadh2. That brings us to the electron transport chain. High energy electrons are passed down the chain and their. Released energy is used to create a h+ concentration.

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

_____What is added to a molecule such as ADP when it is phosphorylated?

_____ An anaerobic process in which pyruvate is converted to lactate

_____ A biochemical process that breaks down food molecules to produce other molecules for cellular maintenance.

_____What is the final end product of Glycolysis?

_____ Refers to the potential energy provided by a large hydrogen-cation concentration gradient, and itâs movement across a biological membrane during chemiosmosis.

_____ A molecule that transfers or shuttles electrons during redox reactions.

_____ An organism that can survive in the presence or absence of oxygen.

_____ A type of enzyme that teams with NAD⁺ to remove hydrogen atoms with their electrons.

_____ The loss of electrons from one molecule to another.

_____ A process in which ATP is produced using the energy stored in concentration gradients.

_____ The products produced during a biochemical reaction that fall between the starting molecule and the end product.

_____ Biochemical process in which a glucose molecule is degraded to two pyruvates.

_____ Short for âreduction/oxidationâ reactions

_____How many pyruvate molecules are produced from a single Glyceraldehyde 3-phosphate?

_____ The formation of ATP occurring when an enzyme transfers a phosphate group from an organic molecule to ADP.

_____ Organisms that will die in the presence of oxygen.

_____ A term referring to the presence of oxygen.

_____ A series of electron-carrier molecules that shuttle electrons during the redox reactions that release energy used to make ATP.

_____ A biochemical process in which pyruvate is produced without the presence of oxygen.

20._____ The metabolic cycle that is fueled by Acetyl CoEnzyme A; occurs in the matrix of the mitochondria and supplies most of the NADH molecules that carry energy to the electron transport chain.

_____What is the chemical formula for Cellular Respiration?

_____What environmental condition is necessary for Anaerobic Respiration to occur?

_____Where does the Electron Transport Chain occur in the mitochondria?

_____Where does Glycolysis occur in a cell?

_____ An anaerobic process in which CO₂ is released as a byproduct and ethanol is produced as a product.

_____Where does the Krebs cycle occur in the mitochondria?

_____ The gain of electrons from one molecule to another.

_____ A high-energy fuel molecule that begins the Citric Acid Cycle.

_____What condition is necessary of Aerobic Respiration to occur?

_____ A term referring to the absence of oxygen.

_____What compound is derived from B vitamins, and helps the Acetyl portion of Acetyl CoA into the Krebs Cycle?

_____What is the name of the molecule that channels protons, providing the energy necessary to phosphorylate ADP to ATP?

_____In the blank, write the number of ATP^âs that can be synthesized from 3 NADH molecules.

_____In the blank, write the number of ATP^âs that can be synthesized from a single FADH₂ molecule.

_____What is the final electron acceptor in cellular respiration?

_____What molecule is regenerated during the process of the Krebs Cycle?

_____What enzyme is used to catalyzed the reaction that occurs during the formation of Acetyl CoA?

_____How many pyruvates are produced from a single glucose molecule?

_____How many Acetyl CoA molecules are produced from a single glucose molecule?

_____What is the reduced form of Nicotinamide Adenine Dinucleotide?

_____What is the oxidized form of Flavin Adenine Dinucleotide?

42._____ A membrane protein that is used in conjunction with chemiosmosis to produced ATP.

I know that this alot of questions, but it's kinda a last ditch effort. these are the last 42 definitions i have left to answer out of 500 question for my final exam study guide. so whatever help i can get is fine. No explanations needed just what each definition is explaining and thanks in advance ladies and gentlemen.

scarletlocust623

___ 25- The Krebs cycle begins with the union of acetyl CoA with oxaloacetate forming citrate, allowing oxidative decarboxylation reactions to occur, and ends with the conversion of malate to oxaloacetate. Using this information and your knowledge of the Krebs cycle, how many net carbons does the citric acid cycle gain?
A) 0 carbons
B) 1 carbon
C) 2 carbons
D) 4 carbons
___ 26- Directly from the Krebs cycle we can obtain:
A) ATP
B) GTP and NADPH
C) ATP and NADPH
D) ATP, GTP, and NADPH
___ 27- Which of the following is not an intermediary of the Krebs cycle?
A) oxaloacetate
B) citrate
C) succinyl CoA
D) acetyl CoA
___ 28- How many di nucleotides are reduced by four turns of the Krebs cycle?
A) 1 FADH2 and 4 NADH
B) 2 FADH2 and 8 NADH
C) 4 FADH2 and 12 NADH
D) 1 FAD and 4 NAD +

BIOL 1001 Chapter : Chapter 8 Harvesting Energy Part 2 Of 2 For 2 26

Document Summary

Get access

Related Documents

BIOL 1001 Chapter : CH 8 Outline

BIOL 1001 Chapter Notes - Chapter 8: Ethanol Fermentation, Chemiosmosis, Oxaloacetic Acid

BIOL 1001 Chapter : Chapter 8 Harvesting Energy Glycolysis And Cellular Respiration

Related Questions