Question 1

In the sequence Glu-Pro-Ile-Leu,which amino acid contains the N-terminal group?

Accepted Answer

A) proline 
B) leucine 
C) isoleucine 
D) glutamic acid 
A) proline 
B) leucine 
C) isoleucine 
D) glutamic acid D

Question 2

What is a codon?

Accepted Answer

A codon is a series of three bases that codes for one of the 20 amino acids.

Question 3

In the sequence Arg-Pro-Leu-Gln,which amino acid contains the C-terminal group?

Accepted Answer

A) proline 
B) leucine 
C) glutamine 
D) arginine 
A) proline 
B) leucine 
C) glutamine 
D) arginine C

Question 4

Why are lipids well-suited as structural components of cell membranes?

Accepted Answer

Lipids are hydrophobic molecules that ar

Question 5

Which of the following shows all of the tripeptides that can be formed from one molecule each of alanine (Ala),methionine (Met),and proline (Pro)?

Accepted Answer

A) AlaMetPro 
B) AlaMetPro and AlaProMet 
C) AlaMetPro,AlaProMet,ProMetAla,ProAlaMet,MetProAla,MetAlaPro 
D) AlaMetPro,AlaProMet,ProAlaMet 
E) AlaMetPro,AlaProMet,ProAlaMet,MetProAla 
A) AlaMetPro 
B) AlaMetPro and AlaProMet 
C) AlaMetPro,AlaProMet,ProMetAla,ProAlaMet,MetProAla,MetAlaPro 
D) AlaMetPro,AlaProMet,ProAlaMet 
E) AlaMetPro,AlaProMet,ProAlaMet,MetProAla

Question 6

Which of the following hold two strands of DNA in an a-helix?

Accepted Answer

A) ester linkages 
B) disulfide linkages 
C) peptide bonds 
D) hydrogen bonds 
E) glycosidic linkages 
A) ester linkages 
B) disulfide linkages 
C) peptide bonds 
D) hydrogen bonds 
E) glycosidic linkages

Question 7

What is the difference between an a-glycosidic linkage and a b-glycosidic linkage? What implication does this have for the strength of the intermolecular forces between molecules?

Accepted Answer

The a-glycosidic linkage in starches cau

Question 8

What type of lipid is the following compound?

Accepted Answer

A) steroid 
B) phospholipid 
C) glycolipid 
D) fatty acid 
E) triglyceride 
A) steroid 
B) phospholipid 
C) glycolipid 
D) fatty acid 
E) triglyceride

Question 9

Which of the following statements is TRUE?

Accepted Answer

A) Monosaccharides are the building blocks of polypeptides. 
B) Nucleotides are the building blocks of saccharides. 
C) Fatty acids are responsible for DNA replication. 
D) Peptides are the building blocks of amino acids. 
E) Carbohydrates are water soluble and responsible for short-term energy storage. 
A) Monosaccharides are the building blocks of polypeptides. 
B) Nucleotides are the building blocks of saccharides. 
C) Fatty acids are responsible for DNA replication. 
D) Peptides are the building blocks of amino acids. 
E) Carbohydrates are water soluble and responsible for short-term energy storage.

Question 10

Identify glucose.

Accepted Answer

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

Question 11

Identify the polysaccharide.

Accepted Answer

A) glucose 
B) cholesterol 
C) fructose 
D) cellulose 
E) sucrose 
A) glucose 
B) cholesterol 
C) fructose 
D) cellulose 
E) sucrose

Question 12

Which of the following fatty acids is most likely to be a solid at room temperature?

Accepted Answer

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

Question 13

Choose the polysaccharide from the compounds below.

Accepted Answer

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

Question 14

Which of the following is a type of nucleic acid?

Accepted Answer

A) RNA 
B) amino acid 
C) dipeptide 
D) carbohydrate 
E) lipid 
A) RNA 
B) amino acid 
C) dipeptide 
D) carbohydrate 
E) lipid

Question 15

Which of the following describes a primary protein structure?

Accepted Answer

A) protein structure maintained by disulfide linkages 
B) amino acid sequence maintained by peptide bonds 
C) protein chains maintained by interactions of peptide backbones 
D) arrangement of multiple protein subunits 
E) protein structure maintained through multiple hydrogen bonds 
A) protein structure maintained by disulfide linkages 
B) amino acid sequence maintained by peptide bonds 
C) protein chains maintained by interactions of peptide backbones 
D) arrangement of multiple protein subunits 
E) protein structure maintained through multiple hydrogen bonds

Question 16

Choose the saturated triglyceride from the compounds below.

Accepted Answer

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

Question 17

How many chromosomes are in the nuclei of human cells?

Accepted Answer

A) 42 
B) 44 
C) 46 
D) 48 
E) 52 
A) 42 
B) 44 
C) 46 
D) 48 
E) 52

Question 18

Which of the following statements is TRUE?

Accepted Answer

A) Cytosine and Thymine are a complementary base pair that forms three hydrogen bonds. 
B) Thymine and Guanine are a complementary base pair that forms three hydrogen bonds. 
C) Cytosine and Guanine are a complementary base pair that forms two hydrogen bonds. 
D) Thymine and Adenine are a complementary base pair that forms two hydrogen bonds. 
E) Thymine and Guanine are a complementary base pair that forms two hydrogen bonds. 
A) Cytosine and Thymine are a complementary base pair that forms three hydrogen bonds. 
B) Thymine and Guanine are a complementary base pair that forms three hydrogen bonds. 
C) Cytosine and Guanine are a complementary base pair that forms two hydrogen bonds. 
D) Thymine and Adenine are a complementary base pair that forms two hydrogen bonds. 
E) Thymine and Guanine are a complementary base pair that forms two hydrogen bonds.

Question 19

Which of the following is an example of an aldopentose?

Accepted Answer

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

Question 20

How many of the carbons in the following structure are chiral?

Accepted Answer

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

Exam 22: Biochemistry

In the sequence Glu-Pro-Ile-Leu,which amino acid contains the N-terminal group?

What is a codon?

In the sequence Arg-Pro-Leu-Gln,which amino acid contains the C-terminal group?

Why are lipids well-suited as structural components of cell membranes?

Which of the following shows all of the tripeptides that can be formed from one molecule each of alanine (Ala),methionine (Met),and proline (Pro)?

Which of the following hold two strands of DNA in an a-helix?

What is the difference between an a-glycosidic linkage and a b-glycosidic linkage? What implication does this have for the strength of the intermolecular forces between molecules?

What type of lipid is the following compound?

Which of the following statements is TRUE?

Identify glucose.

Identify the polysaccharide.

Which of the following fatty acids is most likely to be a solid at room temperature?

Choose the polysaccharide from the compounds below.

Which of the following is a type of nucleic acid?

Which of the following describes a primary protein structure?

Choose the saturated triglyceride from the compounds below.

How many chromosomes are in the nuclei of human cells?

Which of the following statements is TRUE?

Which of the following is an example of an aldopentose?

How many of the carbons in the following structure are chiral?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

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