Question 1

Which of the following is present in RNA but not found in DNA?

Accepted Answer

A)  adenine
B)  thymine
C)  uracil
D)  cytosine
E)  guanine B

Question 2

Which amino acid contains a nonpolar side chain?

Accepted Answer

A)   
B)   
C)   
D)   
E)    C

Question 3

What is the name for a series of three bases in a nucleic acid that defines the amino acid to be used in the synthesis of a protein?

Accepted Answer

The name for a series of three bases in a nucleic acid that defines the amino acid to be used in the synthesis of a protein is called a codon. Each codon corresponds to a specific amino acid or a stop signal during protein synthesis. The genetic code, which is nearly universal across all organisms, consists of 64 codons, with some amino acids being encoded by more than one codon.

Question 4

Identify the two classes of nucleic acids.

Accepted Answer

A)  ribonucleic acid and deoxyribonucleic acid
B)  alpha helix and pleated sheet
C)  dipeptide and tripeptide
D)  primary and secondary
E)  globular and fibrous

Question 5

The following peptide is formed from two amino acids:  Which of the following correctly identifies the peptide bond as indicated by the circled bond?

Accepted Answer

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

Question 6

Which of the following is not a building block for proteins?

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 7

A triglyceride contains the following fatty acid. Is this triglyceride a solid fat or a liquid oil? Is it saturated or unsaturated? Does it contain cis or trans arrangements at the double bonds?

Accepted Answer

A)  liquid oil, saturated, trans
B)  liquid oil, saturated, cis
C)  liquid oil, unsaturated, cis and trans
D)  solid fat, saturated, cis
E)  solid fat, unsaturated, trans

Question 8

Which amino acid contains a polar side chain?

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 9

A nucleotide is an organic molecule containing an amine group and a carboxylic acid group.

Accepted Answer

A) True 
 B)False

Question 10

________ is one of a class of organic polymers making up most body tissue that is characterized by the presence of peptide bonds and formed by the polymerization of amino acids.

Accepted Answer

A)  A dipeptide
B)  A tripeptide
C)  A protein
D)  DNA
E)  A carbohydrate

Question 11

How many different amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide?

Accepted Answer

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

Question 12

What is the location on an enzyme where the catalysis takes place?

Accepted Answer

The answer of What is the location on an enzyme...

Question 13

The fundamental unit of a nucleic acid polymer, consisting of a sugar molecule bonded to both a phosphate group and an organic, nitrogen-containing base is called a nuclide.

Accepted Answer

A) True 
 B)False

Question 14

Glucose is a hexose sugar with the formula C6H12O6. Which of the following is α-glucose?

Accepted Answer

A)   6H12O6. Which of the following is α-glucose? 
A)     
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C)     
D)     
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B)   6H12O6. Which of the following is α-glucose? 
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B)     
C)     
D)     
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C)   6H12O6. Which of the following is α-glucose? 
A)     
B)     
C)     
D)     
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D)   6H12O6. Which of the following is α-glucose? 
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B)     
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E)   6H12O6. Which of the following is α-glucose? 
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Question 15

Which class of organic polymers makes up most body tissue and is characterized by the presence of peptide bonds and is formed by the polymerization of amino acids?

Accepted Answer

The answer of Which class of organic polymers makes up...

Question 16

A portion of a DNA strand has the following base sequence: TTAACGCGATA What is the corresponding base sequence in mRNA transcribed from this DNA?

Accepted Answer

A)  AAUUGCGCUAU
B)  AATTGCGCTAT
C)  UUTTGCGCTUT
D)  TTAACGCGATA
E)  AATTUCUCTAT

Question 17

The amino acid sequence in a protein is that protein's primary structure.

Accepted Answer

A) True 
 B)False

Question 18

The following peptide is formed from two amino acids:  Which of the following correctly identifies the alpha carbons as indicated by the circled atoms?

Accepted Answer

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

Question 19

What are the parts of a nucleic acid?

Accepted Answer

A)  sugar and nitrogen base
B)  sugar and phosphate group
C)  sugar and phosphorus base
D)  sugar, phosphate group, and nitrogen base
E)  phosphate group and nitrogen base

Question 20

Which of the following correctly shows the product of the reaction between serine and glycine?

Accepted Answer

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

Exam 17: Biochemistry

Which of the following is present in RNA but not found in DNA?

Which amino acid contains a nonpolar side chain?

What is the name for a series of three bases in a nucleic acid that defines the amino acid to be used in the synthesis of a protein?

Identify the two classes of nucleic acids.

The following peptide is formed from two amino acids: Which of the following correctly identifies the peptide bond as indicated by the circled bond?

Which of the following is not a building block for proteins?

A triglyceride contains the following fatty acid. Is this triglyceride a solid fat or a liquid oil? Is it saturated or unsaturated? Does it contain cis or trans arrangements at the double bonds?

Which amino acid contains a polar side chain?

A nucleotide is an organic molecule containing an amine group and a carboxylic acid group.

________ is one of a class of organic polymers making up most body tissue that is characterized by the presence of peptide bonds and formed by the polymerization of amino acids.

How many different amino acids are obtained by hydrolyzing all the peptide bonds in the following polypeptide?

What is the location on an enzyme where the catalysis takes place?

The fundamental unit of a nucleic acid polymer, consisting of a sugar molecule bonded to both a phosphate group and an organic, nitrogen-containing base is called a nuclide.

Glucose is a hexose sugar with the formula C₆H₁₂O₆. Which of the following is α-glucose?

Which class of organic polymers makes up most body tissue and is characterized by the presence of peptide bonds and is formed by the polymerization of amino acids?

A portion of a DNA strand has the following base sequence: TTAACGCGATA What is the corresponding base sequence in mRNA transcribed from this DNA?

The amino acid sequence in a protein is that protein's primary structure.

The following peptide is formed from two amino acids: Which of the following correctly identifies the alpha carbons as indicated by the circled atoms?

What are the parts of a nucleic acid?

Which of the following correctly shows the product of the reaction between serine and glycine?