Question 1

Pyruvate decarboxylase converts pyruvate into

Accepted Answer

A)  carbon dioxide and acetaldehyde. 
B)  carbon monoxide and acetaldehyde. 
C)  water and glucose. 
D)  ethanol and carbon dioxide. 
A)  carbon dioxide and acetaldehyde. 
B)  carbon monoxide and acetaldehyde. 
C)  water and glucose. 
D)  ethanol and carbon dioxide.

Question 2

The function of chloroplasts in plant cells is to convert

Accepted Answer

A)  heat energy to light energy. 
B)  heat energy to chemical energy. 
C)  light energy to chemical energy. 
D)  chemical energy to heat energy. 
A)  heat energy to light energy. 
B)  heat energy to chemical energy. 
C)  light energy to chemical energy. 
D)  chemical energy to heat energy.

Question 3

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 4

Cell signaling and cell membranes are examples of functions performed by which biomolecule?

Accepted Answer

A)  amino acid 
B)  nucleotide 
C)  simple sugar 
D)  fatty acid 
A)  amino acid 
B)  nucleotide 
C)  simple sugar 
D)  fatty acid

Question 5

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 6

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 7

A hydrogen bond can best be described as a

Accepted Answer

A)  strong covalent interaction. 
B)  strong ionic interaction. 
C)  weak noncovalent interaction. 
D)  weak covalent interaction. 
A)  strong covalent interaction. 
B)  strong ionic interaction. 
C)  weak noncovalent interaction. 
D)  weak covalent interaction.

Question 8

What does chromatin in eukaryotic nucleus contain?

Accepted Answer

A)  DNA packaged with proteins. 
B)  RNA packaged with proteins. 
C)  ATP packaged with proteins. 
D)  DNA packaged with ATP. 
A)  DNA packaged with proteins. 
B)  RNA packaged with proteins. 
C)  ATP packaged with proteins. 
D)  DNA packaged with ATP.

Question 9

A segment of DNA containing 20 base pairs includes 8 adenine residues. How many uracil residues are present?

Accepted Answer

A)  12 
B)  8 
C)  0 
D)  28 
A)  12 
B)  8 
C)  0 
D)  28

Question 10

What is another way to describe the amphipathic nature of a fatty acid?

Accepted Answer

A)  polar head and nonpolar tail 
B)  nonpolar head and polar tail 
C)  polar head and double bonds in tail 
D)  nonpolar head and double bonds in tail 
A)  polar head and nonpolar tail 
B)  nonpolar head and polar tail 
C)  polar head and double bonds in tail 
D)  nonpolar head and double bonds in tail

Question 11

If the concentration of F is high in a cell, the pathway will MOST likely shift to produce

Accepted Answer

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

Question 12

Describe the difference between a deoxyribonucleotide and a ribonucleotide.

Accepted Answer

Deoxyribonucleotides are monomeric units

Question 13

By convention, nucleic acid chains are written starting at the end.

Accepted Answer

A)  amino 
B)  carboxyl 
C)  3 ' 
D)  5 ' 
A)  amino 
B)  carboxyl 
C)  3 ' 
D)  5 '

Question 14

How does the molecule adenosine monophosphate fit into the seven hierarchical levels that define the chemical basis of life?

Accepted Answer

A)  element/functional group 
B)  biomolecule 
C)  metabolism 
D)  organism 
A)  element/functional group 
B)  biomolecule 
C)  metabolism 
D)  organism

Question 15

The birth of modern biochemistry can be traced to the

Accepted Answer

A)  end of the 19th century. 
B)  end of the 20th century. 
C)  beginning of the 19th century. 
D)  beginning of the 21st century. 
A)  end of the 19th century. 
B)  end of the 20th century. 
C)  beginning of the 19th century. 
D)  beginning of the 21st century.

Question 16

A single nucleotide base substitution in a wild-type DNA is an example of

Accepted Answer

A)  random mutation. 
B)  transcription. 
C)  translation. 
D)  cloning. 
A)  random mutation. 
B)  transcription. 
C)  translation. 
D)  cloning.

Question 17

Identify the following functional groups.

Accepted Answer

Amino, hydroxyl, sul

Question 18

The process of fermentation uses sugar to produce which molecules?

Accepted Answer

A)  alcohol and carbon monoxide 
B)  alcohol and carbon dioxide 
C)  acid and carbon monoxide 
D)  acid and carbon dioxide 
A)  alcohol and carbon monoxide 
B)  alcohol and carbon dioxide 
C)  acid and carbon monoxide 
D)  acid and carbon dioxide

Question 19

Which of the following is the correct formula for glucose?

Accepted Answer

A)  C5H1 0O5 
B)  C6H1 2O6 
C)  C5H1 2O6 
D)  C6H1 0O6 
A)  C5H1 0O5 
B)  C6H1 2O6 
C)  C5H1 2O6 
D)  C6H1 0O6

Question 20

What is the function of the chloroplast in a plant cell?

Accepted Answer

A)  detoxification of macromolecules 
B)  degradation of macromolecules 
C)  conversion of light energy to chemical energy 
D)  conversion of glucose to ATP 
A)  detoxification of macromolecules 
B)  degradation of macromolecules 
C)  conversion of light energy to chemical energy 
D)  conversion of glucose to ATP

Exam 1: Principles of Biochemistry

Pyruvate decarboxylase converts pyruvate into

The function of chloroplasts in plant cells is to convert

What process converts DNA to RNA?

Cell signaling and cell membranes are examples of functions performed by which biomolecule?

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

Which of the following is NOT a common functional group?

A hydrogen bond can best be described as a

What does chromatin in eukaryotic nucleus contain?

A segment of DNA containing 20 base pairs includes 8 adenine residues. How many uracil residues are present?

What is another way to describe the amphipathic nature of a fatty acid?

If the concentration of F is high in a cell, the pathway will MOST likely shift to produce

Describe the difference between a deoxyribonucleotide and a ribonucleotide.

By convention, nucleic acid chains are written starting at the end.

How does the molecule adenosine monophosphate fit into the seven hierarchical levels that define the chemical basis of life?

The birth of modern biochemistry can be traced to the

A single nucleotide base substitution in a wild-type DNA is an example of

Identify the following functional groups.

The process of fermentation uses sugar to produce which molecules?

Which of the following is the correct formula for glucose?

What is the function of the chloroplast in a plant cell?

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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