Question 1

What is the name of the nucleoside shown?

Accepted Answer

A) Uridine 
B) Uridosine 
C) Oxyuridine 
D) Oxyuridosine 
A) Uridine 
B) Uridosine 
C) Oxyuridine 
D) Oxyuridosine

Question 2

A/An ________ mutation is the substitution of one nucleotide for another.

Accepted Answer

The answer of A/An ________ mutation is the substitution of...

Question 3

What is the process by which DNA makes a copy of itself when a cell divides?

Accepted Answer

A) Transcription 
B) Replication 
C) Duplication 
D) Cloning 
A) Transcription 
B) Replication 
C) Duplication 
D) Cloning

Question 4

What step in the synthesis of proteins involves the genetic message contained in mRNA specifying the specific amino acid sequence of a protein?

Accepted Answer

A) Elongation 
B) Directed synthesis 
C) Translation 
D) Protein hydrolysis 
A) Elongation 
B) Directed synthesis 
C) Translation 
D) Protein hydrolysis

Question 5

Which amino acid sequence is coded for by the mRNA sequence 5' CCA AAC UGG GUA 3'?

Accepted Answer

A) Pro-Asn-Trp-Val 
B) Gln-Lys-Cys-Asp 
C) Pro-Ser-Tyr-Val 
D) Leu-Ile-Leu-Asp 
A) Pro-Asn-Trp-Val 
B) Gln-Lys-Cys-Asp 
C) Pro-Ser-Tyr-Val 
D) Leu-Ile-Leu-Asp

Question 6

A polynucleotide contains ________.

Accepted Answer

A) one free phosphate group at the 5' end 
B) a backbone of alternating sugar and base groups 
C) one free phosphate group at the 1' end 
D) one free OH group at the 5' end 
A) one free phosphate group at the 5' end 
B) a backbone of alternating sugar and base groups 
C) one free phosphate group at the 1' end 
D) one free OH group at the 5' end

Question 7

Which is the smallest type of RNA?

Accepted Answer

A) mRNA 
B) dRNA 
C) tRNA 
D) rRNA 
A) mRNA 
B) dRNA 
C) tRNA 
D) rRNA

Question 8

The primary structure of a polynucleotide is the sequence of nucleotides that it contains,which is determined by the identity of the bases.

Accepted Answer

A) True 
 B)False

Question 9

Each individual tRNA contains a/an ________ of three nucleotides that is complementary to the codon in mRNA and identifies an individual amino acid.

Accepted Answer

The answer of Each individual tRNA contains a/an ________ of...

Question 10

Transcription forms a messenger RNA molecule with a sequence that is identical to the DNA template strand from which it is prepared.

Accepted Answer

A) True 
 B)False

Question 11

What is the base present in the nucleoside below?

Accepted Answer

A) Purine 
B) Pyrimidine 
C) Phenol 
D) Aniline 
A) Purine 
B) Pyrimidine 
C) Phenol 
D) Aniline

Question 12

Which statement concerning the replication of DNA is not true?

Accepted Answer

A) The first step in replication is unwinding the DNA to expose the bases on each strand. 
B) A new phosphodiester bond is formed between the 5'-phosphate of the nucleoside triphosphate and the 3'-OH group of the new DNA strand. 
C) Replication occurs in only one direction on the template strand,from the 5' end to the 3' end. 
D) In replication,the lagging strand is synthesized in small fragments which are then joined together by a DNA ligase enzyme. 
A) The first step in replication is unwinding the DNA to expose the bases on each strand. 
B) A new phosphodiester bond is formed between the 5'-phosphate of the nucleoside triphosphate and the 3'-OH group of the new DNA strand. 
C) Replication occurs in only one direction on the template strand,from the 5' end to the 3' end. 
D) In replication,the lagging strand is synthesized in small fragments which are then joined together by a DNA ligase enzyme.

Question 13

The dipeptide produced from the DNA segment CAGCTA is the same as the dipeptide from the DNA segment CAGCTG.

Accepted Answer

A) True 
 B)False

Question 14

Which choice is a polynucleotide that is a polymer of ribonucleotides?

Accepted Answer

A) DNA 
B) RNA 
C) Both DNA and RNA 
D) Neither DNA nor RNA 
A) DNA 
B) RNA 
C) Both DNA and RNA 
D) Neither DNA nor RNA

Question 15

The synthesis of messenger RNA from DNA is called ________.

Accepted Answer

The answer of The synthesis of messenger RNA from DNA...

Question 16

________ is an mRNA sequence that codes for the dipeptide Cys-Trp.

Accepted Answer

The answer of ________ is an mRNA sequence that codes...

Question 17

Which base is at the 3' end of the structure shown?

Accepted Answer

A) Adenine 
B) Cytosine 
C) Guanine 
D) Thymine 
E) Uracil 
A) Adenine 
B) Cytosine 
C) Guanine 
D) Thymine 
E) Uracil

Question 18

The dipeptide produced from the DNA segment CAGCTA is the same as the dipeptide from the DNA segment CAGCTT.

Accepted Answer

A) True 
 B)False

Question 19

During replication,the two strands of DNA separate and each serves as a template for a new strand. Thus,the original DNA molecule forms two DNA molecules,each of which contains one strand from the parent DNA and one new strand.

Accepted Answer

A) True 
 B)False

Question 20

There was a mix-up in the hospital nursery and there is a question as to which baby belongs to a set of new parents. The given gel contains the DNA fingerprint of the new mother (Lane 1),the new father (Lane 2),and two infants (Lanes 3 and 4). The DNA fingerprinting indicated that the infant tested in Lane 4 is the child of these parents.

Accepted Answer

A) True 
 B)False

Exam 22: Nucleic Acids and Protein Synthesis

What is the name of the nucleoside shown?

A/An ________ mutation is the substitution of one nucleotide for another.

What is the process by which DNA makes a copy of itself when a cell divides?

What step in the synthesis of proteins involves the genetic message contained in mRNA specifying the specific amino acid sequence of a protein?

Which amino acid sequence is coded for by the mRNA sequence 5' CCA AAC UGG GUA 3'?

A polynucleotide contains ________.

Which is the smallest type of RNA?

The primary structure of a polynucleotide is the sequence of nucleotides that it contains,which is determined by the identity of the bases.

Each individual tRNA contains a/an ________ of three nucleotides that is complementary to the codon in mRNA and identifies an individual amino acid.

Transcription forms a messenger RNA molecule with a sequence that is identical to the DNA template strand from which it is prepared.

What is the base present in the nucleoside below?

Which statement concerning the replication of DNA is not true?

The dipeptide produced from the DNA segment CAGCTA is the same as the dipeptide from the DNA segment CAGCTG.

Which choice is a polynucleotide that is a polymer of ribonucleotides?

The synthesis of messenger RNA from DNA is called ________.

________ is an mRNA sequence that codes for the dipeptide Cys-Trp.

Which base is at the 3' end of the structure shown?

The dipeptide produced from the DNA segment CAGCTA is the same as the dipeptide from the DNA segment CAGCTT.

During replication,the two strands of DNA separate and each serves as a template for a new strand. Thus,the original DNA molecule forms two DNA molecules,each of which contains one strand from the parent DNA and one new strand.

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