Question 1

Which of the following bond monosaccharide units together into polysaccharides?

Accepted Answer

A)  ester bonds 
B)  glycosidic linkages 
C)  disulfide linkages 
D)  amine bonds 
E)  ketone linkages 
A)  ester bonds 
B)  glycosidic linkages 
C)  disulfide linkages 
D)  amine bonds 
E)  ketone linkages B

Question 2

Why does the melting point of fatty acids decrease with the number of double bonds present?

Accepted Answer

The melting points of fatty acids are determined primarily by the strength of the dispersion forces between the nonpolar portion of the molecules.The more double bonds that are present,the more kinked the molecules and the less strongly they can interact with one another.This weakens the dispersion forces and makes it easier to melt the compound.

Question 3

Choose the monosaccharide from the compounds below.

Accepted Answer

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

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 is a type of nucleic acid?

Accepted Answer

A)  DNA 
B)  amino acid 
C)  tripeptide 
D)  carbohydrate 
E)  lipid 
A)  DNA 
B)  amino acid 
C)  tripeptide 
D)  carbohydrate 
E)  lipid

Question 6

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys),threonine (Thr),and hisitidine (His)?

Accepted Answer

A)  LysThrHis 
B)  LysThrHis, LysHisThr, HisThrLys, HisLysThr, ThrLysHis, ThrHisLys 
C)  LysThrHis, LysHisThr, HisLysThr, ThrHisLys 
D)  LysThrHis, LysHisThr, HisLysThr 
E)  LysThrHis and LysHisThr 
A)  LysThrHis 
B)  LysThrHis, LysHisThr, HisThrLys, HisLysThr, ThrLysHis, ThrHisLys 
C)  LysThrHis, LysHisThr, HisLysThr, ThrHisLys 
D)  LysThrHis, LysHisThr, HisLysThr 
E)  LysThrHis and LysHisThr

Question 7

Which one of the following amino acids contains a basic side chain?

Accepted Answer

A)  glutamine 
B)  alanine 
C)  lysine 
D)  methionine 
E)  glycine 
A)  glutamine 
B)  alanine 
C)  lysine 
D)  methionine 
E)  glycine

Question 8

The following is part of a DNA sequence.What is its complementary sequence? AGTTCGAGCCT

Accepted Answer

A)  AGTTCGAGCCT 
B)  TCCGAGCTTGA 
C)  CAGTCCA 
D)  AGGCTCGAACT 
E)  TCAAGCTCGGA 
A)  AGTTCGAGCCT 
B)  TCCGAGCTTGA 
C)  CAGTCCA 
D)  AGGCTCGAACT 
E)  TCAAGCTCGGA

Question 9

The following is part of a DNA sequence.What is its complementary sequence? TCGTAAGCTTGCG

Accepted Answer

A)  AGCATTCGAACGC 
B)  CGCAAGCTTACGA 
C)  TCATTCAC 
D)  GCGTTCGAATGCT 
E)  TCGTAAGCTTGCG 
A)  AGCATTCGAACGC 
B)  CGCAAGCTTACGA 
C)  TCATTCAC 
D)  GCGTTCGAATGCT 
E)  TCGTAAGCTTGCG

Question 10

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 11

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

Accepted Answer

The α-glycosidic linkages in starches ca

Question 12

Choose the saturated triglyceride from the compounds below.

Accepted Answer

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

Question 13

Identify the sugar in RNA.

Accepted Answer

A)  ribose 
B)  deoxyribose 
C)  fructose 
D)  glucose 
E)  galactose 
A)  ribose 
B)  deoxyribose 
C)  fructose 
D)  glucose 
E)  galactose

Question 14

In the protein,Arg-Pro-Lys-Val,which amino acid contains the C-terminal group?

Accepted Answer

A)  arginine 
B)  lysine 
C)  valine 
D)  proline 
A)  arginine 
B)  lysine 
C)  valine 
D)  proline

Question 15

Which of the following statements is TRUE?

Accepted Answer

A)  A nucleotide is composed of a sugar, a base and a phosphate group. 
B)  A codon is a sequence of 3 bases that codes for a single amino acid. 
C)  A gene is a portion of DNA that codes for a single protein. 
D)  Genes are contained in structures called chromosomes. 
E)  All of the above are true. 
A)  A nucleotide is composed of a sugar, a base and a phosphate group. 
B)  A codon is a sequence of 3 bases that codes for a single amino acid. 
C)  A gene is a portion of DNA that codes for a single protein. 
D)  Genes are contained in structures called chromosomes. 
E)  All of the above are true.

Question 16

Which of the following statements is TRUE?

Accepted Answer

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

Question 17

Identify the compound that is a steroid.

Accepted Answer

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

Question 18

Which of the following has a tertiary protein structure?

Accepted Answer

A)  ketone 
B)  amide 
C)  ribonucleotide 
D)  amino acid 
E)  fibrous protein 
A)  ketone 
B)  amide 
C)  ribonucleotide 
D)  amino acid 
E)  fibrous protein

Question 19

The ability for DNA to replicate itself was discovered by

Accepted Answer

A)  Curie. 
B)  Einstein. 
C)  Watson and Crick. 
D)  Galileo. 
E)  Edison. 
A)  Curie. 
B)  Einstein. 
C)  Watson and Crick. 
D)  Galileo. 
E)  Edison.

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

Which of the following bond monosaccharide units together into polysaccharides?

Why does the melting point of fatty acids decrease with the number of double bonds present?

Choose the monosaccharide from the compounds below.

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

Which of the following is a type of nucleic acid?

Which of the following shows all of the tripeptides that can be formed from one molecule each of lysine (Lys),threonine (Thr),and hisitidine (His)?

Which one of the following amino acids contains a basic side chain?

The following is part of a DNA sequence.What is its complementary sequence? AGTTCGAGCCT

The following is part of a DNA sequence.What is its complementary sequence? TCGTAAGCTTGCG

Which of the following describes a primary protein structure?

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

Choose the saturated triglyceride from the compounds below.

Identify the sugar in RNA.

In the protein,Arg-Pro-Lys-Val,which amino acid contains the C-terminal group?

Which of the following statements is TRUE?

Which of the following statements is TRUE?

Identify the compound that is a steroid.

Which of the following has a tertiary protein structure?

The ability for DNA to replicate itself was discovered by

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

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

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,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

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