Question 1

Describe the differences between the structures of pyrimidine and a purine.

Accepted Answer

A pyrimidine is an aromatic molecule with nitrogen at positions 1 and 3 on the ring,along with a carbonyl at position 4.Examples of pyrimidines are cytosine,thymine,and uracil.A purine is a heterocyclic aromatic molecule with nitrogen at positions 1,3,7,and 9.Examples of purines are guanine and adenine.

Question 2

Hydrogen bonds form between hydrogen and

Accepted Answer

A)  oxygen. 
B)  helium. 
C)  carbon. 
D)  hydrogen. 
A)  oxygen. 
B)  helium. 
C)  carbon. 
D)  hydrogen. A

Question 3

ATP is an abbreviation for which energy currency molecule?

Accepted Answer

A)  adenosine triphosphate 
B)  adenosine thymine 
C)  adenosine dinucleotide 
D)  amino triphosphate 
A)  adenosine triphosphate 
B)  adenosine thymine 
C)  adenosine dinucleotide 
D)  amino triphosphate A

Question 4

Look at the bond energies O-H,N-H,and P-H in the table below.O-H is the hardest bond to break because it has the

Accepted Answer

A)  greatest difference in relative affinities of the two atoms for electrons. 
B)  smallest difference in relative affinities of the two atoms for electrons. 
C)  smallest difference in atomic size. 
D)  largest difference in atomic size. 
A)  greatest difference in relative affinities of the two atoms for electrons. 
B)  smallest difference in relative affinities of the two atoms for electrons. 
C)  smallest difference in atomic size. 
D)  largest difference in atomic size.

Question 5

The "central dogma of molecular biology" can best be described as the transfer of information between

Accepted Answer

A)  nucleic acids and proteins. 
B)  fatty acids and proteins. 
C)  carboxylic acids and proteins. 
D)  nucleic acids and DNA. 
A)  nucleic acids and proteins. 
B)  fatty acids and proteins. 
C)  carboxylic acids and proteins. 
D)  nucleic acids and DNA.

Question 6

The figure below shows an example of which functional group?

Accepted Answer

A)  amino 
B)  hydroxyl 
C)  phosphoryl 
D)  methyl 
A)  amino 
B)  hydroxyl 
C)  phosphoryl 
D)  methyl

Question 7

If a mutation was made to the gene for glucose-6-phosphate dehydrogenase that prevented it from functioning,a possible outcome would be the production of

Accepted Answer

A)  more NADPH. 
B)  less NADPH. 
C)  more ATP. 
D)  less ATP. 
A)  more NADPH. 
B)  less NADPH. 
C)  more ATP. 
D)  less ATP.

Question 8

Amino acids are the building blocks for which biomolecule(s)?

Accepted Answer

A)  proteins 
B)  DNA 
C)  carbohydrates 
D)  micelles 
A)  proteins 
B)  DNA 
C)  carbohydrates 
D)  micelles

Question 9

Identify the following biomolecules.

Accepted Answer

Amino acid

Question 10

Who received the Nobel Prize in 1962 for elucidating the molecular structure of DNA?

Accepted Answer

A)  Albert Einstein 
B)  Linus Pauling 
C)  John Kendrew and Max Perutz 
D)  Maurice Wilkins, James Watson, and Francis Crick 
A)  Albert Einstein 
B)  Linus Pauling 
C)  John Kendrew and Max Perutz 
D)  Maurice Wilkins, James Watson, and Francis Crick

Question 11

Compare and contrast a transcriptome and a proteome.

Accepted Answer

Although both transcriptomes and proteom

Question 12

The correct name for the VSEPR arrangement around a carbon in methane is

Accepted Answer

A)  linear. 
B)  trigonal bipyrimidal. 
C)  tetrahedral. 
D)  octahedral. 
A)  linear. 
B)  trigonal bipyrimidal. 
C)  tetrahedral. 
D)  octahedral.

Question 13

Give an example of each of the following: element,biomolecule,macromolecule,metabolism,cell,organism,and ecosystem.

Accepted Answer

Any element from the periodic table is a

Question 14

Describe how a receptor is activated and inactivated by a ligand in the figure below.

Accepted Answer

The receptor ligand is bound t

Question 15

Which of the following is NOT a common functional group?

Accepted Answer

A)  COOH 
B)  CH3 
C)  SH 
D)  CHO 
A)  COOH 
B)  CH3 
C)  SH 
D)  CHO

Question 16

The DNA double helix is stabilized by the interactions between nucleotides because of __________ between nucleotides.

Accepted Answer

A)  hydrogen bonding 
B)  pi-pi stacking 
C)  sigma bonds 
D)  ionic interactions 
A)  hydrogen bonding 
B)  pi-pi stacking 
C)  sigma bonds 
D)  ionic interactions

Question 17

Amino acids are the building blocks of proteins.There are 20 amino acids; how do these amino acids differ from one another?

Accepted Answer

Amino acids differ f

Question 18

What process converts DNA to RNA?

Accepted Answer

A)  DNA transcription 
B)  DNA replication 
C)  DNA translation 
D)  RNA transcription 
A)  DNA transcription 
B)  DNA replication 
C)  DNA translation 
D)  RNA transcription

Question 19

Compare and contrast the bases found in DNA and RNA.

Accepted Answer

DNA is composed of the deoxyribonucleoti

Question 20

Explain how a linear pathway is different from a forked pathway.

Accepted Answer

In a linear pathway,a reaction

Exam 1: Principles of Biochemistry

Describe the differences between the structures of pyrimidine and a purine.

Hydrogen bonds form between hydrogen and

ATP is an abbreviation for which energy currency molecule?

Look at the bond energies O-H,N-H,and P-H in the table below.O-H is the hardest bond to break because it has the

The "central dogma of molecular biology" can best be described as the transfer of information between

The figure below shows an example of which functional group?

If a mutation was made to the gene for glucose-6-phosphate dehydrogenase that prevented it from functioning,a possible outcome would be the production of

Amino acids are the building blocks for which biomolecule(s)?

Identify the following biomolecules.

Who received the Nobel Prize in 1962 for elucidating the molecular structure of DNA?

Compare and contrast a transcriptome and a proteome.

The correct name for the VSEPR arrangement around a carbon in methane is

Give an example of each of the following: element,biomolecule,macromolecule,metabolism,cell,organism,and ecosystem.

Describe how a receptor is activated and inactivated by a ligand in the figure below.

Which of the following is NOT a common functional group?

The DNA double helix is stabilized by the interactions between nucleotides because of __________ between nucleotides.

Amino acids are the building blocks of proteins.There are 20 amino acids; how do these amino acids differ from one another?

What process converts DNA to RNA?

Compare and contrast the bases found in DNA and RNA.

Explain how a linear pathway is different from a forked pathway.

Physical Biochemistry: Energy Conversion,water,and Membranes

Nucleic Acid Structure and Function

Protein Structure

Methods in Protein Biochemistry

Protein Function

Enzyme Mechanisms

Cell Signaling Systems

Glycolysis: a Paradigm of Metabolic Regulation

The Citrate Cycle

Oxidative Phosphorylation

Photosynthesis

Carbohydrate Structure and Function

Carbohydrate Metabolism

Lipid Structure and Function

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Metabolic Integration

Dna Replication, repair, and Recombination

Rna Synthesis, processing, and Gene Silencing

Protein Synthesis, posttranslational Modification, and Transport

Gene Regulation

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