Question 1

The base pair A-T forms _______ hydrogen bonds, while the base pair G-C forms _______ hydrogen bonds.

Accepted Answer

A)  3; 3 
B)  2; 2 
C)  3; 2 
D)  2; 3 
E)  1; 2 
A)  3; 3 
B)  2; 2 
C)  3; 2 
D)  2; 3 
E)  1; 2

Question 2

In the following tRNA, how are IV and III connected?

Accepted Answer

A)  They are connected by covalent bonds. 
B)  They are connected by hydrogen bonds. 
C)  They are connected by ionic interactions. 
D)  They are connected by amide bonds. 
E)  They are connected by ester bonds. 
A)  They are connected by covalent bonds. 
B)  They are connected by hydrogen bonds. 
C)  They are connected by ionic interactions. 
D)  They are connected by amide bonds. 
E)  They are connected by ester bonds.

Question 3

Approximately how many people are infected with HIV in the world?

Accepted Answer

A)  about one thousand 
B)  about ten thousand 
C)  about one hundred thousand 
D)  about one million 
E)  about forty million 
A)  about one thousand 
B)  about ten thousand 
C)  about one hundred thousand 
D)  about one million 
E)  about forty million

Question 4

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GCA GCA TCA CCA-3′, how would the peptide sequence be affected?

Accepted Answer

A)  All amino acids downstream of the mutation would be changed. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace a His. 
D)  A stop would replace a Trp. 
E)  No change would occur. 
A)  All amino acids downstream of the mutation would be changed. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace a His. 
D)  A stop would replace a Trp. 
E)  No change would occur.

Question 5

How many nucleotides are in one DNA molecule?

Accepted Answer

A)  tens 
B)  hundreds 
C)  thousands 
D)  hundreds of thousands 
E)  millions 
A)  tens 
B)  hundreds 
C)  thousands 
D)  hundreds of thousands 
E)  millions

Question 6

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, how would the peptide sequence be affected?

Accepted Answer

A)  All amino acids downstream of the mutation would be changed. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace an His. 
D)  A stop would replace a Trp. 
E)  No change would occur. 
A)  All amino acids downstream of the mutation would be changed. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace an His. 
D)  A stop would replace a Trp. 
E)  No change would occur.

Question 7

The codon is labeled _________; the anticodon is _________.

Accepted Answer

A)  V; IV 
B)  II, III 
C)  III, IV 
D)  IV, III 
E)  IV, V 
A)  V; IV 
B)  II, III 
C)  III, IV 
D)  IV, III 
E)  IV, V

Question 8

What is the DNA sequence that the mRNA sequence 5′-AUG CCU AGC-3′ was translated from?

Accepted Answer

A)  3′-AUG CCU AGC-5′ 
B)  3′-CGA UCC GUA-5′ 
C)  3′-UAC GGA UCG-5′ 
D)  3′-TAC GGA TCG-5′ 
E)  3′-ATG CCT TCG-5′ 
A)  3′-AUG CCU AGC-5′ 
B)  3′-CGA UCC GUA-5′ 
C)  3′-UAC GGA UCG-5′ 
D)  3′-TAC GGA TCG-5′ 
E)  3′-ATG CCT TCG-5′

Question 9

In recombinant DNA technology

Accepted Answer

A)  genes from different organisms are combined. 
B)  new genes are created. 
C)  plants are treated with steroid so that they grow larger. 
D)  organisms are given drugs that damage their DNA. 
E)  All of the above occur. 
A)  genes from different organisms are combined. 
B)  new genes are created. 
C)  plants are treated with steroid so that they grow larger. 
D)  organisms are given drugs that damage their DNA. 
E)  All of the above occur.

Question 10

How many different types of nucleotides are found in DNA?

Accepted Answer

A)  3 
B)  4 
C)  10 
D)  20 
E)  Each nucleotide is different. 
A)  3 
B)  4 
C)  10 
D)  20 
E)  Each nucleotide is different.

Question 11

Fill in the blanks with letters from the diagram below.The ________ leaves the nucleus and attaches to the _______.At _________, the first tRNA attaches to begin protein synthesis.

Accepted Answer

A)  A; B; C 
B)  E; F; D 
C)  E; F; G 
D)  E; F; B 
E)  D; E; F 
A)  A; B; C 
B)  E; F; D 
C)  E; F; G 
D)  E; F; B 
E)  D; E; F

Question 12

Which statement about recombinant DNA technology is FALSE?

Accepted Answer

A)  There is global consensus that recombinant DNA technology is without risk. 
B)  The most common use of recombinant DNA crops is in herbicide and insect resistant plants. 
C)  The United States and other countries use recombinant DNA technology in their food and crops. 
D)  It is possible to produce vaccines and medicines in plants using recombinant DNA technology. 
E)  Recombinant DNA technology is used to produce genetically engineered products. 
A)  There is global consensus that recombinant DNA technology is without risk. 
B)  The most common use of recombinant DNA crops is in herbicide and insect resistant plants. 
C)  The United States and other countries use recombinant DNA technology in their food and crops. 
D)  It is possible to produce vaccines and medicines in plants using recombinant DNA technology. 
E)  Recombinant DNA technology is used to produce genetically engineered products.

Question 13

What is the general strategy used to treat HIV/AIDS?

Accepted Answer

A)  inhibition of reverse transcriptase 
B)  inhibition of protease 
C)  preventing the virus from entering the host cell 
D)  disrupting the life cycle of the virus 
E)  All of the above are general strategies. 
A)  inhibition of reverse transcriptase 
B)  inhibition of protease 
C)  preventing the virus from entering the host cell 
D)  disrupting the life cycle of the virus 
E)  All of the above are general strategies.

Question 14

Which of the molecules below are pyrimidines? ​

Accepted Answer

A)  I and III 
B)  II and IV 
C)  I, III, and V 
D)  III only 
E)  All of these molecules are pyrimidines. 
A)  I and III 
B)  II and IV 
C)  I, III, and V 
D)  III only 
E)  All of these molecules are pyrimidines.

Question 15

If an organism has 22% thymine in its DNA, it will have

Accepted Answer

A)  78% adenine. 
B)  22% adenine. 
C)  78% uracil. 
D)  22% uracil. 
E)  22% guanine. 
A)  78% adenine. 
B)  22% adenine. 
C)  78% uracil. 
D)  22% uracil. 
E)  22% guanine.

Question 16

DNA is negatively charged.What part of a DNA molecule actually holds the charge?

Accepted Answer

A)  the sugar 
B)  the pyrimidines 
C)  the phosphates 
D)  the purines 
E)  the glycosidic bond 
A)  the sugar 
B)  the pyrimidines 
C)  the phosphates 
D)  the purines 
E)  the glycosidic bond

Question 17

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, this would be a ________ mutation.

Accepted Answer

A)  substitution 
B)  frame-shift 
C)  translocation 
D)  viral 
E)  silent 
A)  substitution 
B)  frame-shift 
C)  translocation 
D)  viral 
E)  silent

Question 18

The molecule below is found in

Accepted Answer

A)  DNA. 
B)  protein. 
C)  steroids. 
D)  RNA. 
E)  starch. 
A)  DNA. 
B)  protein. 
C)  steroids. 
D)  RNA. 
E)  starch.

Question 19

Which statement does NOT describe a chromosome?

Accepted Answer

A)  A chromosome is made out of highly coiled DNA and proteins. 
B)  A chromosome contains one double-stranded DNA helix. 
C)  Stretched out, the DNA in one chromosome is about 1 mm long. 
D)  A chromosome can have an X shape. 
E)  A chromosome is visible under a microscope. 
A)  A chromosome is made out of highly coiled DNA and proteins. 
B)  A chromosome contains one double-stranded DNA helix. 
C)  Stretched out, the DNA in one chromosome is about 1 mm long. 
D)  A chromosome can have an X shape. 
E)  A chromosome is visible under a microscope.

Question 20

DNA coils around ___________ to form ____________.

Accepted Answer

A)  amino acids; peptides 
B)  monosaccharides; ribosomes 
C)  histone proteins; nucleosomes 
D)  histone proteins; ribosomes 
E)  amino acids; nucleosomes 
A)  amino acids; peptides 
B)  monosaccharides; ribosomes 
C)  histone proteins; nucleosomes 
D)  histone proteins; ribosomes 
E)  amino acids; nucleosomes

The base pair A-T forms _ hydrogen bonds, while the base pair G-C forms _ hydrogen bonds.

In the following tRNA, how are IV and III connected?

Approximately how many people are infected with HIV in the world?

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GCA GCA TCA CCA-3′, how would the peptide sequence be affected?

How many nucleotides are in one DNA molecule?

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, how would the peptide sequence be affected?

The codon is labeled _; the anticodon is _.

What is the DNA sequence that the mRNA sequence 5′-AUG CCU AGC-3′ was translated from?

In recombinant DNA technology

How many different types of nucleotides are found in DNA?

Fill in the blanks with letters from the diagram below.The ____ leaves the nucleus and attaches to the _.At _______, the first tRNA attaches to begin protein synthesis.

Which statement about recombinant DNA technology is FALSE?

What is the general strategy used to treat HIV/AIDS?

Which of the molecules below are pyrimidines?

If an organism has 22% thymine in its DNA, it will have

DNA is negatively charged.What part of a DNA molecule actually holds the charge?

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, this would be a ________ mutation.

The molecule below is found in

Which statement does NOT describe a chromosome?

DNA coils around _ to form __.

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

Filters

Exam 17: Nucleotides and Nucleic Acids

The base pair A-T forms _______ hydrogen bonds, while the base pair G-C forms _______ hydrogen bonds.

In the following tRNA, how are IV and III connected?

Approximately how many people are infected with HIV in the world?

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GCA GCA TCA CCA-3′, how would the peptide sequence be affected?

How many nucleotides are in one DNA molecule?

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, how would the peptide sequence be affected?

The codon is labeled _________; the anticodon is _________.

What is the DNA sequence that the mRNA sequence 5′-AUG CCU AGC-3′ was translated from?

In recombinant DNA technology

How many different types of nucleotides are found in DNA?

Fill in the blanks with letters from the diagram below.The ________ leaves the nucleus and attaches to the _______.At _________, the first tRNA attaches to begin protein synthesis.

Which statement about recombinant DNA technology is FALSE?

What is the general strategy used to treat HIV/AIDS?

Which of the molecules below are pyrimidines? ​

If an organism has 22% thymine in its DNA, it will have

DNA is negatively charged.What part of a DNA molecule actually holds the charge?

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GTA GCA TTC ACC A-3′, this would be a ________ mutation.

The molecule below is found in

Which statement does NOT describe a chromosome?

DNA coils around ___________ to form ____________.

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

Filters

The base pair A-T forms _ hydrogen bonds, while the base pair G-C forms _ hydrogen bonds.

The codon is labeled _; the anticodon is _.

Fill in the blanks with letters from the diagram below.The ____ leaves the nucleus and attaches to the _.At _______, the first tRNA attaches to begin protein synthesis.

Which of the molecules below are pyrimidines?

DNA coils around _ to form __.