Question 1

Match between columns
                        Premises: joining
separation
complementary base pairing

Accepted Answer

The Answer of Replication cannon occur if DNA is present is...

Question 2

DNA replication of a single DNA molecule is referred to as semiconservative because

Accepted Answer

A) it results in two nonidentical DNA molecules. 
B) one DNA strand is replicated continuously, while the other must be replicated discontinuously. 
C) of the two DNA molecules, one is made up totally of parental DNA, while the other is entirely newly synthesized DNA. 
D) all the DNA strands in the two DNA molecules will have both parental and newly synthesized DNA. 
E) each of the two DNA molecules will consist of one parental strand and one newly synthesized strand. 
A) it results in two nonidentical DNA molecules. 
B) one DNA strand is replicated continuously, while the other must be replicated discontinuously. 
C) of the two DNA molecules, one is made up totally of parental DNA, while the other is entirely newly synthesized DNA. 
D) all the DNA strands in the two DNA molecules will have both parental and newly synthesized DNA. 
E) each of the two DNA molecules will consist of one parental strand and one newly synthesized strand. E

Question 3

Base pairing

Accepted Answer

A) occurs between identical bases. 
B) requires hydrogen bonds. 
C) takes place between sugars and phosphates on the two strands in a helix. 
D) explains the X-ray results from Rosalind Franklin. 
E) occurs between A and C. 
A) occurs between identical bases. 
B) requires hydrogen bonds. 
C) takes place between sugars and phosphates on the two strands in a helix. 
D) explains the X-ray results from Rosalind Franklin. 
E) occurs between A and C. B

Question 4

Genes are composed of

Accepted Answer

A) DNA. 
B) proteins. 
C) chromosomes. 
D) carbohydrates. 
E) lipids. 
A) DNA. 
B) proteins. 
C) chromosomes. 
D) carbohydrates. 
E) lipids.

Question 5

Describe how the discovery of the structure of DNA is an example of the fact that science is a process that always builds on previous work.

Accepted Answer

Responses should include the following:(

Question 6

Match between columns
                        Premises: DNA polymerase
nucleotide
histone
bases of DNA

Accepted Answer

The Answer of building block of DNA and joins nucleotides is...

Question 7

What step in DNA replication precedes the pairing of complementary bases?

Accepted Answer

A) polymerization of DNA 
B) separation of the two strands 
C) joining of the two strands 
D) mitotic division 
E) formation of the histone core 
A) polymerization of DNA 
B) separation of the two strands 
C) joining of the two strands 
D) mitotic division 
E) formation of the histone core

Question 8

Packaged DNA is referred to as

Accepted Answer

A) chromosomes. 
B) histones. 
C) chromatin. 
D) protein. 
E) nucleosomes. 
A) chromosomes. 
B) histones. 
C) chromatin. 
D) protein. 
E) nucleosomes.

Question 9

The structure of DNA is often described as a twisted ladder. The rungs of the ladder represent the sugar phosphate chains. Is this an accurate description? Why or why not?

Accepted Answer

No, it is not accura

Question 10

Given a strand of DNA that "reads" GATTACGATT, what would the sequence of bases on the opposite side "read"?

Accepted Answer

CTAATGCTAA
Analyze a

Question 11

What is the sugar molecule found in DNA?

Accepted Answer

A) ribose 
B) phosphatase 
C) deoxyribose 
D) oxyribose 
E) polymerase 
A) ribose 
B) phosphatase 
C) deoxyribose 
D) oxyribose 
E) polymerase

Question 12

Which of the researchers that elucidated the structure of DNA did not receive a Nobel Prize?

Accepted Answer

A) Wilkins 
B) Franklin 
C) Crick 
D) Watson 
E) All 4 received the Nobel. 
A) Wilkins 
B) Franklin 
C) Crick 
D) Watson 
E) All 4 received the Nobel.

Question 13

Bacteriophages were used by Hershey and Chase to further elucidate our understanding of heredity. Why were bacteriophages used?

Accepted Answer

Bacteriophages (phages) are viruses that

Question 14

A package of histones with DNA wrapped around them forms spherical structures called

Accepted Answer

A) nucleoli. 
B) chromatin. 
C) nucleosomes. 
D) ribosomes. 
E) lysosomes. 
A) nucleoli. 
B) chromatin. 
C) nucleosomes. 
D) ribosomes. 
E) lysosomes.

Question 15

If DNA is likened to a ladder, what are the compounds that make up the sides of the ladder?

Accepted Answer

A) phosphates and bases 
B) phosphates and sugars 
C) bases only 
D) phosphates only 
E) bases and sugars 
A) phosphates and bases 
B) phosphates and sugars 
C) bases only 
D) phosphates only 
E) bases and sugars

Question 16

The most important experimental result that suggested to Watson and Crick that DNA was in the form of a helix was

Accepted Answer

A) the finding of Chargaff that DNA always had equal amounts of A and T and equal amounts of G and C. 
B) Griffith's results with transformation. 
C) the discovery that DNA is wound around histone proteins. 
D) X-ray data from Rosalind Franklin . 
E) understanding DNA replication. 
A) the finding of Chargaff that DNA always had equal amounts of A and T and equal amounts of G and C. 
B) Griffith's results with transformation. 
C) the discovery that DNA is wound around histone proteins. 
D) X-ray data from Rosalind Franklin . 
E) understanding DNA replication.

Question 17

Why do geneticists refer to the two sugar phosphate strands of DNA as "antiparallel"?

Accepted Answer

Nucleotides of each strand lin

Question 18

Normal human body cells contain how many chromosomes?

Accepted Answer

A) 22 
B) 23 
C) 46 
D) 44 
E) 42 
A) 22 
B) 23 
C) 46 
D) 44 
E) 42

Question 19

In a DNA double helix, each loop of the helix

Accepted Answer

A) is wound around histone proteins. 
B) consists of 10 nucleotides. 
C) always contains equal amounts of G and T. 
D) contains the sugar-phosphate backbones in the interior of the helix. 
E) represents one nucleotide. 
A) is wound around histone proteins. 
B) consists of 10 nucleotides. 
C) always contains equal amounts of G and T. 
D) contains the sugar-phosphate backbones in the interior of the helix. 
E) represents one nucleotide.

Question 20

Why is it important that DNA replication be so accurate but not perfect?

Accepted Answer

The best responses will includ

Exam 6: DNA: The Thread of Life

DNA replication of a single DNA molecule is referred to as semiconservative because

Base pairing

Genes are composed of

Describe how the discovery of the structure of DNA is an example of the fact that science is a process that always builds on previous work.

What step in DNA replication precedes the pairing of complementary bases?

Packaged DNA is referred to as

The structure of DNA is often described as a twisted ladder. The rungs of the ladder represent the sugar phosphate chains. Is this an accurate description? Why or why not?

Given a strand of DNA that "reads" GATTACGATT, what would the sequence of bases on the opposite side "read"?

What is the sugar molecule found in DNA?

Which of the researchers that elucidated the structure of DNA did not receive a Nobel Prize?

Bacteriophages were used by Hershey and Chase to further elucidate our understanding of heredity. Why were bacteriophages used?

A package of histones with DNA wrapped around them forms spherical structures called

If DNA is likened to a ladder, what are the compounds that make up the sides of the ladder?

The most important experimental result that suggested to Watson and Crick that DNA was in the form of a helix was

Why do geneticists refer to the two sugar phosphate strands of DNA as "antiparallel"?

Normal human body cells contain how many chromosomes?

In a DNA double helix, each loop of the helix

Why is it important that DNA replication be so accurate but not perfect?

What Is Life

Cells and the Chemistry of Life

How Cells Take in and Use Energy

The Cell Cycle

Patterns of Inheritance

Genes, Proteins, and Genetic Engineering

Reproduction and Development

The Mechanisms of Evolution

Lifes Origins and Biodiversity

Single-Celled Life

Fungi and Plants: Decomposers and Producers

The Evolution and Diversity of Animals

Ecology of Populations and Communities

Ecosystems and the Biosphere

Body Function, Survival, and the Steady State

Circulation and Respiration

Defense Against Disease

Animal Nutrition and Digestion

Hormones: Messengers of Change

The Nervous System

The Body in Motion

Plant Architecture and Function

Plant Growth, Hormones, and Engineering

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