Question 1

Which is the abbreviated structure of acetyl CoA?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 2

The citric acid cycle is activated with the amount of available ADP is low.

Accepted Answer

A) True 
 B)False

Question 3

Stage [3] of catabolism is sometimes called aerobic respiration.

Accepted Answer

A) True 
 B)False

Question 4

Which intermediate in the citric acid cycle contains two chirality centers?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 5

________ is a cyclic metabolic pathway that begins with the addition of acetyl CoA to a four-carbon substrate and ends when the same four-carbon compound is formed as a product eight steps later.

Accepted Answer

The citric

Question 6

________ is the breakdown of large molecules into smaller ones.

Accepted Answer

The answer of ________ is the breakdown of large molecules...

Question 7

Each FADH2 that enters the electron transport chain will result in the formation of ________ units of ATP.

Accepted Answer

A) 7.3 
B) 10 
C) 1.5 
D) 2.5 
E) 32 
A) 7.3 
B) 10 
C) 1.5 
D) 2.5 
E) 32

Question 8

Which statement best describes what occurs with a substrate is oxidized using FAD to product FADH2?

Accepted Answer

A) FAD is a reducing agent,and FADH2 is its oxidized form. 
B) FAD is a reducing agent,and FADH2 is its reduced form. 
C) FAD is an oxidizing agent,and FADH2 is its oxidized form. 
D) FAD is an oxidizing agent,and FADH2 is its reduced form. 
A) FAD is a reducing agent,and FADH2 is its oxidized form. 
B) FAD is a reducing agent,and FADH2 is its reduced form. 
C) FAD is an oxidizing agent,and FADH2 is its oxidized form. 
D) FAD is an oxidizing agent,and FADH2 is its reduced form.

Question 9

NAD+ is the abbreviation for nicotinamide adenine dinucleotide.

Accepted Answer

A) True 
 B)False

Question 10

Which statement best describes how the interconversion of ATP and ADP is responsible for storing and providing energy for cellular reactions?

Accepted Answer

A) The energy stored in ADP is released when ATP is synthesized. 
B) The energy required to phosphorylate ADP is stored in ATP,and released when ATP undergoes hydrolysis. 
C) The energy released in the phosphorylation of ADP can be coupled with unfavorable reactions within the cell. 
D) The energy required to hydrolyze ATP comes from the energy producing reactions in the cell; the energy lost is then stored in ATP. 
A) The energy stored in ADP is released when ATP is synthesized. 
B) The energy required to phosphorylate ADP is stored in ATP,and released when ATP undergoes hydrolysis. 
C) The energy released in the phosphorylation of ADP can be coupled with unfavorable reactions within the cell. 
D) The energy required to hydrolyze ATP comes from the energy producing reactions in the cell; the energy lost is then stored in ATP.

Question 11

The addition of a phosphate group to ADP,forming ATP,is an example of what type of reaction?

Accepted Answer

A) Hydration 
B) Hydrolysis 
C) Phosphorylation 
D) Reduction 
E) Decarboxylation 
A) Hydration 
B) Hydrolysis 
C) Phosphorylation 
D) Reduction 
E) Decarboxylation

Question 12

Oxaloacetate is the starting material in the first step of the citric acid cycle and the product of the last step. The last step of the citric acid cycle,the oxidation of malate to oxaloacetate,is shown. What is the structure of oxaloacetate?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 13

If the phosphorylation of GMP to form GDP requires 7.3 kcal/mol of energy,what is the energy change associated with the hydrolysis of GDP to form GMP?

Accepted Answer

A) 7.3 kcal/mol 
B) -7.3 kcal/mol 
C) 14.6 kcal/mol 
D) Not enough information is given to determine the change in energy. 
A) 7.3 kcal/mol 
B) -7.3 kcal/mol 
C) 14.6 kcal/mol 
D) Not enough information is given to determine the change in energy.

Question 14

Since more energy is released from the hydrolysis of creatine phosphate than is needed for the phosphorylation of ADP,the coupling of these two reactions results in the formation of ATP from ADP.

Accepted Answer

A) True 
 B)False

Question 15

How many reactions in the citric acid cycle generate NAD+?

Accepted Answer

A) 0 
B) 1 
C) 3 
D) 8 
A) 0 
B) 1 
C) 3 
D) 8

Question 16

H+ ions generated by reactions in the electron transport chain,as well as H+ ions present in the matrix of the mitochondria,are pumped across the inner mitochondrial membrane into the intermembrane space at three different sites.

Accepted Answer

A) True 
 B)False

Question 17

At the end of the electron transport chain,the electrons and protons (obtained from the reduced coenzymes or the matrix of the mitochondrion)react with inhaled oxygen to form ________.

Accepted Answer

The answer of At the end of the electron transport...

Question 18

The number of moles of ATP that can be synthesized from ADP using the 750. Calories ingested during a meal is ________ moles.

Accepted Answer

The answer of The number of moles of ATP that...

Question 19

Which best describes the function of the coenzymes NAD+ and FAD in catabolic pathways?

Accepted Answer

A) Competitive inhibitors of the enzymes present in each pathway 
B) Noncompetitive inhibitors of the enzymes present in each pathway 
C) Oxidizing agents that accept electrons and hydrogen ions from molecules undergoing oxidation 
D) Transport molecules that carry acetyl units to or from the different stages of metabolism 
A) Competitive inhibitors of the enzymes present in each pathway 
B) Noncompetitive inhibitors of the enzymes present in each pathway 
C) Oxidizing agents that accept electrons and hydrogen ions from molecules undergoing oxidation 
D) Transport molecules that carry acetyl units to or from the different stages of metabolism

Question 20

The structure of coenzyme A contains amine and amide functional groups.

Accepted Answer

A) True 
 B)False

Exam 23: Metabolism and Energy Production

Which is the abbreviated structure of acetyl CoA?

The citric acid cycle is activated with the amount of available ADP is low.

Stage [3] of catabolism is sometimes called aerobic respiration.

Which intermediate in the citric acid cycle contains two chirality centers?

________ is a cyclic metabolic pathway that begins with the addition of acetyl CoA to a four-carbon substrate and ends when the same four-carbon compound is formed as a product eight steps later.

________ is the breakdown of large molecules into smaller ones.

Each FADH2 that enters the electron transport chain will result in the formation of ________ units of ATP.

Which statement best describes what occurs with a substrate is oxidized using FAD to product FADH2?

NAD+ is the abbreviation for nicotinamide adenine dinucleotide.

Which statement best describes how the interconversion of ATP and ADP is responsible for storing and providing energy for cellular reactions?

The addition of a phosphate group to ADP,forming ATP,is an example of what type of reaction?

Oxaloacetate is the starting material in the first step of the citric acid cycle and the product of the last step. The last step of the citric acid cycle,the oxidation of malate to oxaloacetate,is shown. What is the structure of oxaloacetate?

If the phosphorylation of GMP to form GDP requires 7.3 kcal/mol of energy,what is the energy change associated with the hydrolysis of GDP to form GMP?

Since more energy is released from the hydrolysis of creatine phosphate than is needed for the phosphorylation of ADP,the coupling of these two reactions results in the formation of ATP from ADP.

How many reactions in the citric acid cycle generate NAD+?

H+ ions generated by reactions in the electron transport chain,as well as H+ ions present in the matrix of the mitochondria,are pumped across the inner mitochondrial membrane into the intermembrane space at three different sites.

At the end of the electron transport chain,the electrons and protons (obtained from the reduced coenzymes or the matrix of the mitochondrion)react with inhaled oxygen to form ________.

The number of moles of ATP that can be synthesized from ADP using the 750. Calories ingested during a meal is ________ moles.

Which best describes the function of the coenzymes NAD+ and FAD in catabolic pathways?

The structure of coenzyme A contains amine and amide functional groups.

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Carbohydrate,lipid,and Protein Metabolism

Filters

Each FADH₂ that enters the electron transport chain will result in the formation of ________ units of ATP.

Which statement best describes what occurs with a substrate is oxidized using FAD to product FADH₂?

NAD⁺ is the abbreviation for nicotinamide adenine dinucleotide.

How many reactions in the citric acid cycle generate NAD⁺?

H⁺ ions generated by reactions in the electron transport chain,as well as H⁺ ions present in the matrix of the mitochondria,are pumped across the inner mitochondrial membrane into the intermembrane space at three different sites.

Which best describes the function of the coenzymes NAD⁺ and FAD in catabolic pathways?