Question 1

Which of the molecules below are purines? ​

Accepted Answer

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

Question 2

Why are combinations of drug therapies used to treat HIV?

Accepted Answer

A)  The virus spreads quickly. 
B)  The virus turns into AIDs quickly. 
C)  The virus can destroy immune cells efficiently. 
D)  The virus constantly mutates. 
E)  The virus is unusually small. 
A)  The virus spreads quickly. 
B)  The virus turns into AIDs quickly. 
C)  The virus can destroy immune cells efficiently. 
D)  The virus constantly mutates. 
E)  The virus is unusually small.

Question 3

Which type of RNA carries the genetic information from DNA out of the nucleus?

Accepted Answer

A)  ribosomal RNA (rRN
A)  
B)  RNA polymerase 
C)  messenger RNA (mRN
A)  
D)  transfer RNA (tRN
A)  
E)  All of these carry the genetic information from DNA out of the nucleus. 
A)  ribosomal RNA (rRN
A)  
B)  RNA polymerase 
C)  messenger RNA (mRN
A)  
D)  transfer RNA (tRN
A)  
E)  All of these carry the genetic information from DNA out of the nucleus.

Question 4

Translation continues until which codon is reached?

Accepted Answer

A)  All of these will halt translation. 
B)  UAA, UAG, or UGA 
C)  UAA 
D)  AUG 
E)  UAA or AUG 
A)  All of these will halt translation. 
B)  UAA, UAG, or UGA 
C)  UAA 
D)  AUG 
E)  UAA or AUG

Question 5

The complete sequence of nucleotides in the human body is called the

Accepted Answer

A)  DNA. 
B)  RNA. 
C)  nucleic acids. 
D)  chromosomes. 
E)  genome. 
A)  DNA. 
B)  RNA. 
C)  nucleic acids. 
D)  chromosomes. 
E)  genome.

Question 6

During replication, helicase ____________ the DNA, DNA polymerase copies the leading strand ________, while the lagging strand is copied _________ by DNA polymerase and _________by DNA ligase.

Accepted Answer

A)  unwinds; in fragments; continuously; split 
B)  copies; in fragments; in fragments; spliced 
C)  unwinds; continuously; in fragments; spliced 
D)  proofreads; in fragments; continuously; spliced 
E)  unwinds; continuously; continuously; proofread 
A)  unwinds; in fragments; continuously; split 
B)  copies; in fragments; in fragments; spliced 
C)  unwinds; continuously; in fragments; spliced 
D)  proofreads; in fragments; continuously; spliced 
E)  unwinds; continuously; continuously; proofread

Question 7

In a nucleoside and a nucleotide, a bond forms between a nitrogenous base and a sugar.An arrow points to the nitrogen on the base that bonds to the sugar.Which carbon on the sugar bonds to the indicated nitrogen on the base?

Accepted Answer

A)  1' 
B)  2' 
C)  3' 
D)  4' 
E)  5' 
A)  1' 
B)  2' 
C)  3' 
D)  4' 
E)  5'

Question 8

A normal DNA sequence is 5′-GTA GCA TCA CCA-3′.If the DNA sequence mutated to 5′-GCA GCA TCA CCA-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 9

If the DNA sequence 5′-CCTATCGA-3′ was the template for transcription into mRNA, the sequence of the resulting RNA would be

Accepted Answer

A)  5′-GGATAGCT-3′. 
B)  5′-GGAUAGCU-3′. 
C)  3′-GGAUAGCU-5′. 
D)  3′-GGATAGCT-5′. 
E)  5′-AGCUAUCC-3′. 
A)  5′-GGATAGCT-3′. 
B)  5′-GGAUAGCU-3′. 
C)  3′-GGAUAGCU-5′. 
D)  3′-GGATAGCT-5′. 
E)  5′-AGCUAUCC-3′.

Question 10

What general strategies are used in packaging DNA to fit into a nucleus?

Accepted Answer

A)  None, the DNA is just wadded up in the nucleus. 
B)  coiling only 
C)  coiling and charge attraction 
D)  Only a small part of each chromosome is in each nucleus. 
E)  shrinking 
A)  None, the DNA is just wadded up in the nucleus. 
B)  coiling only 
C)  coiling and charge attraction 
D)  Only a small part of each chromosome is in each nucleus. 
E)  shrinking

Question 11

What does the letter D represent in the following diagram?

Accepted Answer

A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  stop codon 
E)  start codon 
A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  stop codon 
E)  start codon

Question 12

What type of bond joins the nucleotides in a strand of DNA?

Accepted Answer

A)  hydrogen bonds 
B)  N-glycosidic bonds 
C)  phosphodiester bonds 
D)  peptide bonds 
E)  O-glycosidic bonds 
A)  hydrogen bonds 
B)  N-glycosidic bonds 
C)  phosphodiester bonds 
D)  peptide bonds 
E)  O-glycosidic bonds

Question 13

What does letter G represent in the following diagram?

Accepted Answer

A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  rRNA 
E)  DNA 
A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  rRNA 
E)  DNA

Question 14

What is labeled as II in the diagram below?   ​

Accepted Answer

A)  codon 
B)  anticodon 
C)  hydrogen bonds 
D)  covalent bonds 
E)  rRNA 
A)  codon 
B)  anticodon 
C)  hydrogen bonds 
D)  covalent bonds 
E)  rRNA

Question 15

During replication, each strand of DNA serves as the template for a(n)_________ strand.

Accepted Answer

A)  identical daughter 
B)  complementary daughter 
C)  identical mother 
D)  complementary mother 
E)  identical sister 
A)  identical daughter 
B)  complementary daughter 
C)  identical mother 
D)  complementary mother 
E)  identical sister

Question 16

The codon is found on _____, and the anticodon is found on _____.

Accepted Answer

A)  tRNA; mRNA 
B)  mRNA; tRNA 
C)  mRNA; rRNA 
D)  rRNA; tRNA 
E)  rRNA; mRNA 
A)  tRNA; mRNA 
B)  mRNA; tRNA 
C)  mRNA; rRNA 
D)  rRNA; tRNA 
E)  rRNA; mRNA

Question 17

Which statement BEST describes what happens when transcription is complete?

Accepted Answer

A)  DNA remains unfolded. 
B)  mRNA binds to rRNA in the nucleus. 
C)  mRNA is transported out of the nucleus into the cytoplasm. 
D)  Translation begins in the mitochondria. 
E)  All of the above statements describe what happens when transcription is complete. 
A)  DNA remains unfolded. 
B)  mRNA binds to rRNA in the nucleus. 
C)  mRNA is transported out of the nucleus into the cytoplasm. 
D)  Translation begins in the mitochondria. 
E)  All of the above statements describe what happens when transcription is complete.

Question 18

About how many base pairs are in the human genome?

Accepted Answer

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

Question 19

Which statement BEST describes what occurs during transcription?

Accepted Answer

A)  DNA is reproduced. 
B)  Protein is synthesized using DNA as a template. 
C)  Protein is synthesized using mRNA as a template. 
D)  mRNA is synthesized using DNA as a template. 
E)  mRNA is synthesized using protein as a template. 
A)  DNA is reproduced. 
B)  Protein is synthesized using DNA as a template. 
C)  Protein is synthesized using mRNA as a template. 
D)  mRNA is synthesized using DNA as a template. 
E)  mRNA is synthesized using protein as a template.

Question 20

The arrow labeled II in the nucleic acid below is pointing to a(n)

Accepted Answer

A)  nonpolar covalent bond. 
B)  ionic interaction. 
C)  phosphate ester bond. 
D)  glycosidic bond. 
E)  hydrogen bond. 
A)  nonpolar covalent bond. 
B)  ionic interaction. 
C)  phosphate ester bond. 
D)  glycosidic bond. 
E)  hydrogen bond.

Which of the molecules below are purines?

Why are combinations of drug therapies used to treat HIV?

Which type of RNA carries the genetic information from DNA out of the nucleus?

Translation continues until which codon is reached?

The complete sequence of nucleotides in the human body is called the

During replication, helicase ________ the DNA, DNA polymerase copies the leading strand , while the lagging strand is copied _ by DNA polymerase and _____by DNA ligase.

In a nucleoside and a nucleotide, a bond forms between a nitrogenous base and a sugar.An arrow points to the nitrogen on the base that bonds to the sugar.Which carbon on the sugar bonds to the indicated nitrogen on the base?

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

If the DNA sequence 5′-CCTATCGA-3′ was the template for transcription into mRNA, the sequence of the resulting RNA would be

What general strategies are used in packaging DNA to fit into a nucleus?

What does the letter D represent in the following diagram?

What type of bond joins the nucleotides in a strand of DNA?

What does letter G represent in the following diagram?

What is labeled as II in the diagram below?

During replication, each strand of DNA serves as the template for a(n)_________ strand.

The codon is found on _, and the anticodon is found on _.

Which statement BEST describes what happens when transcription is complete?

About how many base pairs are in the human genome?

Which statement BEST describes what occurs during transcription?

The arrow labeled II in the nucleic acid below is pointing to a(n)

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

Which of the molecules below are purines? ​

Why are combinations of drug therapies used to treat HIV?

Which type of RNA carries the genetic information from DNA out of the nucleus?

Translation continues until which codon is reached?

The complete sequence of nucleotides in the human body is called the

During replication, helicase ____________ the DNA, DNA polymerase copies the leading strand ________, while the lagging strand is copied _________ by DNA polymerase and _________by DNA ligase.

In a nucleoside and a nucleotide, a bond forms between a nitrogenous base and a sugar.An arrow points to the nitrogen on the base that bonds to the sugar.Which carbon on the sugar bonds to the indicated nitrogen on the base?

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

If the DNA sequence 5′-CCTATCGA-3′ was the template for transcription into mRNA, the sequence of the resulting RNA would be

What general strategies are used in packaging DNA to fit into a nucleus?

What does the letter D represent in the following diagram?

What type of bond joins the nucleotides in a strand of DNA?

What does letter G represent in the following diagram?

What is labeled as II in the diagram below? ​

During replication, each strand of DNA serves as the template for a(n)_________ strand.

The codon is found on _____, and the anticodon is found on _____.

Which statement BEST describes what happens when transcription is complete?

About how many base pairs are in the human genome?

Which statement BEST describes what occurs during transcription?

The arrow labeled II in the nucleic acid below is pointing to a(n)

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

Which of the molecules below are purines?

During replication, helicase ________ the DNA, DNA polymerase copies the leading strand , while the lagging strand is copied _ by DNA polymerase and _____by DNA ligase.

What is labeled as II in the diagram below?

The codon is found on _, and the anticodon is found on _.