Question 1

Which of the following represents the correct order in the flow of genetic information?

Accepted Answer

A) mRNA → DNA → proteins 
B) mRNA → tRNA → proteins 
C) DNA → mRNA → proteins 
D) rRNA → mRNA → proteins 
E) rRNA → mRNA → tRNA 
A) mRNA → DNA → proteins 
B) mRNA → tRNA → proteins 
C) DNA → mRNA → proteins 
D) rRNA → mRNA → proteins 
E) rRNA → mRNA → tRNA

Question 2

Which of the following is a nitrogen base found in nucleic acids?

Accepted Answer

A) thymidine 
B) adenine 
C) guanosine 
D) pyridine 
E) ammonia 
A) thymidine 
B) adenine 
C) guanosine 
D) pyridine 
E) ammonia

Question 3

All of the statements about RNA are correct except

Accepted Answer

A) RNA can exist in three forms: rRNA,tRNA,and mRNA. 
B) RNA molecules are smaller than DNA molecules,but form double helices like DNA. 
C) RNA does not contain thymine. 
D) transfer RNA delivers amino acids to the protein chain as it is being manufactured. 
E) messenger RNA is complementary to the template strand of its DNA,and almost identical to the informational strand of the DNA. 
A) RNA can exist in three forms: rRNA,tRNA,and mRNA. 
B) RNA molecules are smaller than DNA molecules,but form double helices like DNA. 
C) RNA does not contain thymine. 
D) transfer RNA delivers amino acids to the protein chain as it is being manufactured. 
E) messenger RNA is complementary to the template strand of its DNA,and almost identical to the informational strand of the DNA.

Question 4

In DNA,a DNA sequence complementary to the strand shown below is
C-G-G-T-T-A-G

Accepted Answer

A) G-C-C-A-A-T-C. 
B) C-G-G-T-T-A-G. 
C) A-T-T-G-G-C-T. 
D) G-C-C-U-U-U-C. 
E) G-C-C-U-U-A-C. 
A) G-C-C-A-A-T-C. 
B) C-G-G-T-T-A-G. 
C) A-T-T-G-G-C-T. 
D) G-C-C-U-U-U-C. 
E) G-C-C-U-U-A-C.

Question 5

The bonding forces between the two DNA strands in a double helix are

Accepted Answer

A) polar bonds. 
B) peptide linkages. 
C) phosphate bonds. 
D) hydrogen bonds. 
A) polar bonds. 
B) peptide linkages. 
C) phosphate bonds. 
D) hydrogen bonds.

Question 6

Which of the following is a nucleoside which would be found in DNA?

Accepted Answer

A) adenosine triphosphate 
B) UMP 
C) deoxyguanosine 
D) deoxyribose 
E) deoxythymidine diphosphate 
A) adenosine triphosphate 
B) UMP 
C) deoxyguanosine 
D) deoxyribose 
E) deoxythymidine diphosphate

Question 7

Which nucleic acid carries the codon for protein synthesis?

Accepted Answer

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

Question 8

A nucleotide is composed of a ________ with a ________ added to it.

Accepted Answer

A) pentose; phosphate group 
B) pentose; nitrogen base 
C) nucleoside; nitrogen base 
D) nucleoside; phosphate group 
E) phosphate group; nitrogen base 
A) pentose; phosphate group 
B) pentose; nitrogen base 
C) nucleoside; nitrogen base 
D) nucleoside; phosphate group 
E) phosphate group; nitrogen base

Question 9

The number of hydrogen bonds between guanine and adenine in DNA is ________.

Accepted Answer

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

Question 10

Replication of DNA produces two daughter DNA molecules in which

Accepted Answer

A) one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized strands. 
B) each daughter molecule contains one parent strand and one newly synthesized strand. 
C) each daughter molecule contains two newly synthesized strands. 
D) each daughter molecule contains both parent strand. 
E) None of the above happens during replication. 
A) one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized strands. 
B) each daughter molecule contains one parent strand and one newly synthesized strand. 
C) each daughter molecule contains two newly synthesized strands. 
D) each daughter molecule contains both parent strand. 
E) None of the above happens during replication.

Question 11

A codon is

Accepted Answer

A) a sequence of three amino acids that translates to a specific nucleotide in RNA. 
B) a complex of proteins and DNA which is associated with cell division. 
C) all the segments of DNA needed to direct the production of a specific protein. 
D) a sequence of three nucleotides in RNA that codes for a specific amino acid or for chain termination. 
E) the collection of DNA that stores all the genetic information for an individual organism. 
A) a sequence of three amino acids that translates to a specific nucleotide in RNA. 
B) a complex of proteins and DNA which is associated with cell division. 
C) all the segments of DNA needed to direct the production of a specific protein. 
D) a sequence of three nucleotides in RNA that codes for a specific amino acid or for chain termination. 
E) the collection of DNA that stores all the genetic information for an individual organism.

Question 12

Which base is normally found in RNA but not in DNA?

Accepted Answer

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

Question 13

Explain the term base pairing and its relationship to replication of DNA.

Accepted Answer

In DNA,the bases are not involved in the

Question 14

A region on the DNA strand that carries the information needed for the synthesis of a specific protein is called a

Accepted Answer

A) codon. 
B) gene. 
C) chromosome. 
D) complementary base unit. 
E) chromatid. 
A) codon. 
B) gene. 
C) chromosome. 
D) complementary base unit. 
E) chromatid.

Question 15

In replication of DNA,each new double strand consists of one template strand and one new strand.Therefore,replication is said to be

Accepted Answer

A) repetitive. 
B) semiconservative. 
C) polymeric. 
D) catabolic. 
E) none of these 
A) repetitive. 
B) semiconservative. 
C) polymeric. 
D) catabolic. 
E) none of these

Question 16

A chromosome is a(an)

Accepted Answer

A) complex of DNA and histones formed in a cell nucleus before cell division. 
B) segment of DNA that directs synthesis of a specific peptide or protein. 
C) list of locations of markers that relate to inheritable traits. 
D) set of identical copies of DNA segments from a single ancestor. 
E) ordered list of the nucleotides in a segment of DNA. 
A) complex of DNA and histones formed in a cell nucleus before cell division. 
B) segment of DNA that directs synthesis of a specific peptide or protein. 
C) list of locations of markers that relate to inheritable traits. 
D) set of identical copies of DNA segments from a single ancestor. 
E) ordered list of the nucleotides in a segment of DNA.

Question 17

One pair of nitrogen bases in DNA is

Accepted Answer

A) adenine and thymine. 
B) adenine and guanine. 
C) adenine and uracil. 
D) adenine and cytosine. 
E) none of the above 
A) adenine and thymine. 
B) adenine and guanine. 
C) adenine and uracil. 
D) adenine and cytosine. 
E) none of the above

Question 18

How many three letter combinations are there present in the genetic code?

Accepted Answer

A) 32 
B) 64 
C) 16 
D) 88 
A) 32 
B) 64 
C) 16 
D) 88

Question 19

Translation is

Accepted Answer

A) copying of DNA molecules to make an exact duplicate. 
B) production of a single strand of RNA identical to the information strand of DNA. 
C) production of a single strand of RNA from the template strand of DNA. 
D) making a protein molecule based on information contained in RNA. 
E) breakdown of damaged nucleic acids to prevent mutations. 
A) copying of DNA molecules to make an exact duplicate. 
B) production of a single strand of RNA identical to the information strand of DNA. 
C) production of a single strand of RNA from the template strand of DNA. 
D) making a protein molecule based on information contained in RNA. 
E) breakdown of damaged nucleic acids to prevent mutations.

Question 20

Transcription is

Accepted Answer

A) copying of DNA molecules to make an exact duplicate. 
B) production of a single strand of RNA identical to the information strand of DNA. 
C) production of a single strand of RNA from the template strand of DNA. 
D) making a protein molecule based on information contained in RNA. 
E) breakdown of damaged nucleic acids to prevent mutations. 
A) copying of DNA molecules to make an exact duplicate. 
B) production of a single strand of RNA identical to the information strand of DNA. 
C) production of a single strand of RNA from the template strand of DNA. 
D) making a protein molecule based on information contained in RNA. 
E) breakdown of damaged nucleic acids to prevent mutations.

Exam 25: Nucleic Acids and Protein Synthesis

Which of the following represents the correct order in the flow of genetic information?

Which of the following is a nitrogen base found in nucleic acids?

All of the statements about RNA are correct except

In DNA,a DNA sequence complementary to the strand shown below is C-G-G-T-T-A-G

The bonding forces between the two DNA strands in a double helix are

Which of the following is a nucleoside which would be found in DNA?

Which nucleic acid carries the codon for protein synthesis?

A nucleotide is composed of a ________ with a ________ added to it.

The number of hydrogen bonds between guanine and adenine in DNA is ________.

Replication of DNA produces two daughter DNA molecules in which

A codon is

Which base is normally found in RNA but not in DNA?

Explain the term base pairing and its relationship to replication of DNA.

A region on the DNA strand that carries the information needed for the synthesis of a specific protein is called a

In replication of DNA,each new double strand consists of one template strand and one new strand.Therefore,replication is said to be

A chromosome is a(an)

One pair of nitrogen bases in DNA is

How many three letter combinations are there present in the genetic code?

Translation is

Transcription is

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

A nucleotide is composed of a with a added to it.