Question 1

When an amine group is transferred to α-ketoglutarate,one product is always

Accepted Answer

A) glycine. 
B) glutamate. 
C) aspartate. 
D) alanine. 
E) leucine. 
A) glycine. 
B) glutamate. 
C) aspartate. 
D) alanine. 
E) leucine.

Question 2

The common features of catabolism of all amino acids include

Accepted Answer

A) removal of the amine group and conversion of the carbon skeleton to intermediates which can enter the citric acid cycle. 
B) hydrolysis of peptide linkages and production of CO2 as waste. 
C) hydrolysis of peptide linkages and production of urea as waste. 
D) diversion of the carbon skeletons into gluconeogenesis. 
E) diversion of the carbon skeletons into ketogenesis. 
A) removal of the amine group and conversion of the carbon skeleton to intermediates which can enter the citric acid cycle. 
B) hydrolysis of peptide linkages and production of CO2 as waste. 
C) hydrolysis of peptide linkages and production of urea as waste. 
D) diversion of the carbon skeletons into gluconeogenesis. 
E) diversion of the carbon skeletons into ketogenesis.

Question 3

The first step in amino acid catabolism is ________.

Accepted Answer

A) transamination 
B) decarboxylation 
C) oxidation 
D) esterification 
E) tautomerization 
A) transamination 
B) decarboxylation 
C) oxidation 
D) esterification 
E) tautomerization

Question 4

Which of the following enzymes is not involved in the digestion of proteins?

Accepted Answer

A) pepsin 
B) amylase 
C) trypsin 
D) carboxypeptidase 
E) chymotrypsin 
A) pepsin 
B) amylase 
C) trypsin 
D) carboxypeptidase 
E) chymotrypsin

Question 5

The urea cycle is ________ because it ________.

Accepted Answer

A) exergonic; costs 3 ATP 
B) exergonic; releases 3 ATP 
C) endergonic; costs 3 ATP 
D) endergonic; releases 3 ATP 
E) neither exergonic nor endergonic; consumes 3 ATP in an early step and releases 3 ATP in a later step 
A) exergonic; costs 3 ATP 
B) exergonic; releases 3 ATP 
C) endergonic; costs 3 ATP 
D) endergonic; releases 3 ATP 
E) neither exergonic nor endergonic; consumes 3 ATP in an early step and releases 3 ATP in a later step

Question 6

The conversion of nitrogen derivatives to urea takes place in the

Accepted Answer

A) blood. 
B) kidneys. 
C) liver. 
D) brain. 
E) intestines. 
A) blood. 
B) kidneys. 
C) liver. 
D) brain. 
E) intestines.

Question 7

The urea cycle is part of the metabolic breakdown of ________.

Accepted Answer

A) amino acids 
B) pyrimidines 
C) purines 
D) lipids 
E) carbohydrates 
A) amino acids 
B) pyrimidines 
C) purines 
D) lipids 
E) carbohydrates

When an amine group is transferred to α-ketoglutarate,one product is always

The common features of catabolism of all amino acids include

The first step in amino acid catabolism is ________.

Which of the following enzymes is not involved in the digestion of proteins?

The urea cycle is because it .

The conversion of nitrogen derivatives to urea takes place in the

The urea cycle is part of the metabolic breakdown of ________.

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

Exam 27: Protein and Amino Acid Metabolism

When an amine group is transferred to α-ketoglutarate,one product is always

The common features of catabolism of all amino acids include

The first step in amino acid catabolism is ________.

Which of the following enzymes is not involved in the digestion of proteins?

The urea cycle is ________ because it ________.

The conversion of nitrogen derivatives to urea takes place in the

The urea cycle is part of the metabolic breakdown of ________.

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

The urea cycle is because it .