Question 1

The DG°' of the hydrolysis of ATP is ________ kJ/mol.

Accepted Answer

A) +25.2 
B) +7.6 
C) -1.0 
D) -30.5 
E) -225.8 
A) +25.2 
B) +7.6 
C) -1.0 
D) -30.5 
E) -225.8 D

Question 2

Under anaerobic conditions,pyruvate is converted to

Accepted Answer

A) acetyl-CoA. 
B) lactate. 
C) NAD+. 
D) NADH. 
E) ATP. 
A) acetyl-CoA. 
B) lactate. 
C) NAD+. 
D) NADH. 
E) ATP. B

Question 3

Which of the following is the allosteric activator of phosphofructokinase?

Accepted Answer

A) AMP 
B) ADP 
C) ATP 
D) ADP and AMP 
E) ADP,AMP and ATP 
A) AMP 
B) ADP 
C) ATP 
D) ADP and AMP 
E) ADP,AMP and ATP A

Question 4

Why are nucleophiles more readily phosphorylated by ATP than by hydrogen phosphate?

Accepted Answer

Attack on ATP occurs more read

Question 5

What compounds are formed when a carboxylate is phosphorylated by the attack at the a-phosphorus of ATP?

Accepted Answer

an acyl ad

Question 6

The fourth step in the b-oxidation is a reverse

Accepted Answer

A) Claisen condensation. 
B) aldol condensation. 
C) Michael addition. 
D) Diels Alder reaction. 
E) saponification. 
A) Claisen condensation. 
B) aldol condensation. 
C) Michael addition. 
D) Diels Alder reaction. 
E) saponification.

Question 7

In the citric acid cycle,what type of intermediate occurs as succinyl-CoA is converted into succinate?

Accepted Answer

A) an acyl phosphate 
B) isocitrate 
C) a-ketoglutarate 
D) an aminophosphate 
E) an acyl radical 
A) an acyl phosphate 
B) isocitrate 
C) a-ketoglutarate 
D) an aminophosphate 
E) an acyl radical

Question 8

For each molecule of FADH2 that undergoes oxidative phosphorylation,________ molecule(s)of ATP is (are)formed.

Accepted Answer

A) 2 
B) 0 
C) 1 
D) 3 
E) 4 
A) 2 
B) 0 
C) 1 
D) 3 
E) 4

Question 9

Identify the steps that occur in catabolism.

Accepted Answer

A) Fats,carbohydrates,and proteins are hydrolyzed. 
B) digestion 
C) NADH is converted to ATP. 
D) citric acid cycle 
E) All steps occur. 
A) Fats,carbohydrates,and proteins are hydrolyzed. 
B) digestion 
C) NADH is converted to ATP. 
D) citric acid cycle 
E) All steps occur.

Question 10

What carbon of the ribose residue in ATP is phosphorylated?

Accepted Answer

A) anomeric center 
B) 5' 
C) 4' 
D) 3' 
E) 2' 
A) anomeric center 
B) 5' 
C) 4' 
D) 3' 
E) 2'

Question 11

How does production of pyrophosphate as the byproduct in a phosphorylation mechanism result in irreversibility of the transfer?

Accepted Answer

Pyrophosphate is sub

Question 12

Each passage through the b-oxidation pathway removes ________ carbons from the fatty acyl-CoA.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 8 
A) 2 
B) 3 
C) 4 
D) 6 
E) 8

Question 13

To what reaction are many endergonic metabolic processes coupled in order to make them exergonic?

Accepted Answer

the hydrol

Question 14

In the citric acid cycle,each molecule of acetyl-CoA is converted into two molecules of what?

Accepted Answer

A) oxygen 
B) pyruvate 
C) lactic acid 
D) acetone 
E) carbon dioxide 
A) oxygen 
B) pyruvate 
C) lactic acid 
D) acetone 
E) carbon dioxide

Question 15

What organic compound is the most important form of chemical energy?

Accepted Answer

The answer of What organic compound is the most important...

Question 16

Draw the structure of pyruvate.

Accepted Answer

The answer of Draw the structure of pyruvate....

Question 17

Most of the energy provided by chemical nutrients is provided in what stage of catabolism?

Accepted Answer

4th stage

Question 18

What is the final product from the glycolysis of glucose?

Accepted Answer

A) one molecule of pyruvate 
B) two molecules of pyruvate 
C) one molecule of 3-phosphoglycerate 
D) one molecule of 2-phosphoglycerate 
E) one molecule of glyceraldehyde-3,P 
A) one molecule of pyruvate 
B) two molecules of pyruvate 
C) one molecule of 3-phosphoglycerate 
D) one molecule of 2-phosphoglycerate 
E) one molecule of glyceraldehyde-3,P

Question 19

What compounds are formed when a carboxylate is phosphorylated by the attack at the b-phosphorus of ATP?

Accepted Answer

an acyl py

Question 20

Identify the second step of the citric acid cycle.

Accepted Answer

A) Citrate is converted to isocitrate. 
B) Conjugate addition of water to the double bond of fumarate forms (S)-malate. 
C) Acetyl-CoA reacts with oxaloacetate to form citrate. 
D) FAD oxidizes succinate to fumarate. 
E) The secondary alcohol of isocitrate is oxidized to a ketone by NAD+ and the ketone loses CO2. 
A) Citrate is converted to isocitrate. 
B) Conjugate addition of water to the double bond of fumarate forms (S)-malate. 
C) Acetyl-CoA reacts with oxaloacetate to form citrate. 
D) FAD oxidizes succinate to fumarate. 
E) The secondary alcohol of isocitrate is oxidized to a ketone by NAD+ and the ketone loses CO2.

Exam 24: The Organic Chemistry of the Metabolic Pathways

The DG°' of the hydrolysis of ATP is ________ kJ/mol.

Under anaerobic conditions,pyruvate is converted to

Which of the following is the allosteric activator of phosphofructokinase?

Why are nucleophiles more readily phosphorylated by ATP than by hydrogen phosphate?

What compounds are formed when a carboxylate is phosphorylated by the attack at the a-phosphorus of ATP?

The fourth step in the b-oxidation is a reverse

In the citric acid cycle,what type of intermediate occurs as succinyl-CoA is converted into succinate?

For each molecule of FADH2 that undergoes oxidative phosphorylation,________ molecule(s)of ATP is (are)formed.

Identify the steps that occur in catabolism.

What carbon of the ribose residue in ATP is phosphorylated?

How does production of pyrophosphate as the byproduct in a phosphorylation mechanism result in irreversibility of the transfer?

Each passage through the b-oxidation pathway removes ________ carbons from the fatty acyl-CoA.

To what reaction are many endergonic metabolic processes coupled in order to make them exergonic?

In the citric acid cycle,each molecule of acetyl-CoA is converted into two molecules of what?

What organic compound is the most important form of chemical energy?

Draw the structure of pyruvate.

Most of the energy provided by chemical nutrients is provided in what stage of catabolism?

What is the final product from the glycolysis of glucose?

What compounds are formed when a carboxylate is phosphorylated by the attack at the b-phosphorus of ATP?

Identify the second step of the citric acid cycle.

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

For each molecule of FADH₂ that undergoes oxidative phosphorylation,________ molecule(s)of ATP is (are)formed.