Question 1

At one end of a double helix, one strand has a free sugar (3') group and the other strand has a free group.

Accepted Answer

The answer of At one end of a double helix,...

Question 2

When a cell divides, each daughter cell receives

Accepted Answer

A)  exactly half the genetic information in the parent cell. 
B)  a nearly perfect copy of the parent cell's genetic information. 
C)  the same amount of genetic information that was in the parent cell, but it has been altered. 
D)  twice the amount of genetic information of the parent cell. 
A)  exactly half the genetic information in the parent cell. 
B)  a nearly perfect copy of the parent cell's genetic information. 
C)  the same amount of genetic information that was in the parent cell, but it has been altered. 
D)  twice the amount of genetic information of the parent cell.

Question 3

DNA replication uses base pairing to ensure genetic constancy.

Accepted Answer

The answer of DNA replication uses base pairing to ensure...

Question 4

Which of the following is TRUE about the accuracy of DNA replication?

Accepted Answer

A)  Many errors are made during DNA replication, but this does not matter because of the immense size of the DNA molecule. 
B)  The few errors made by DNA polymerase are usually corrected by repair enzymes. 
C)  DNA polymerase always makes a perfect copy of the original DNA. 
D)  DNA polymerase makes very few errors, so no repair enzymes are needed. 
E)  Many errors are made during DNA replication, but this does not matter because repair enzymes mend the errors. 
A)  Many errors are made during DNA replication, but this does not matter because of the immense size of the DNA molecule. 
B)  The few errors made by DNA polymerase are usually corrected by repair enzymes. 
C)  DNA polymerase always makes a perfect copy of the original DNA. 
D)  DNA polymerase makes very few errors, so no repair enzymes are needed. 
E)  Many errors are made during DNA replication, but this does not matter because repair enzymes mend the errors.

Question 5

All of the following occur during DNA replication EXCEPT

Accepted Answer

A)  synthesis of totally new double- stranded DNA molecules. 
B)  use of parental DNA as a template. 
C)  use of DNA polymerase enzymes. 
D)  separation of parental DNA strands. 
A)  synthesis of totally new double- stranded DNA molecules. 
B)  use of parental DNA as a template. 
C)  use of DNA polymerase enzymes. 
D)  separation of parental DNA strands.

Question 6

In a DNA molecule, base pairing occurs between

Accepted Answer

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

Question 7

During DNA replication, the continuous daughter strand is the leading strand.

Accepted Answer

A) True 
 B)False

Question 8

DNA possesses

Accepted Answer

A)  C, T, A, and G bases. 
B)  A, U, G, and C bases. 
C)  only U and T bases. 
D)  only C and T bases. 
E)  only A and G bases. 
A)  C, T, A, and G bases. 
B)  A, U, G, and C bases. 
C)  only U and T bases. 
D)  only C and T bases. 
E)  only A and G bases.

Question 9

The two polynucleotide chains in a DNA molecule are attached to each other by

Accepted Answer

A)  peptide bonds between amino acids. 
B)  hydrogen bonds between bases. 
C)  ionic bonds between "R" groups in amino acids. 
D)  covalent bonds between phosphates and sugars. 
E)  covalent bonds between carbon atoms. 
A)  peptide bonds between amino acids. 
B)  hydrogen bonds between bases. 
C)  ionic bonds between "R" groups in amino acids. 
D)  covalent bonds between phosphates and sugars. 
E)  covalent bonds between carbon atoms.

Question 10

The way DNA stores information is through the of bases.

Accepted Answer

A)  size 
B)  different types 
C)  sequence 
D)  number 
A)  size 
B)  different types 
C)  sequence 
D)  number

Question 11

Chargaff found that the amounts of the four bases vary from species to species, but the amount of adenine always equals the amount of guanine and the amount of thymine always equals the amount of cytosine.

Accepted Answer

A) True 
 B)False

Question 12

Semiconservative DNA replication means that

Accepted Answer

A)  only half of the DNA is replicated. 
B)  the old DNA remains completely intact. 
C)  each new DNA molecule has half the DNA from the old one. 
D)  A pairs with T and G pairs with C. 
E)  the old DNA is completely broken down. 
A)  only half of the DNA is replicated. 
B)  the old DNA remains completely intact. 
C)  each new DNA molecule has half the DNA from the old one. 
D)  A pairs with T and G pairs with C. 
E)  the old DNA is completely broken down.

Question 13

Most mutations are harmful or neutral, although in rare instances some can be beneficial.

Accepted Answer

A) True 
 B)False

Question 14

DNA polymerase always moves from along the strand resulting in DNA replication to be continuous on one strand and discontinuous on the other.

Accepted Answer

A)  3' to 5' 
B)  phosphate group to base 
C)  base to phosphor group 
D)  5' to 3' 
A)  3' to 5' 
B)  phosphate group to base 
C)  base to phosphor group 
D)  5' to 3'

Question 15

When chromosomes replicate

Accepted Answer

A)  the original DNA is distributed to the two daughter cells, with no new DNA synthesized. 
B)  the two DNA strands separate and each is used as a template for synthesis of a new strand. 
C)  new DNA synthesis occurs in only one location along the entire DNA molecule. 
D)  one strand of the DNA is completely replicated first, and then the second strand is replicated. 
A)  the original DNA is distributed to the two daughter cells, with no new DNA synthesized. 
B)  the two DNA strands separate and each is used as a template for synthesis of a new strand. 
C)  new DNA synthesis occurs in only one location along the entire DNA molecule. 
D)  one strand of the DNA is completely replicated first, and then the second strand is replicated.

Question 16

The hereditary material present in all cells is

Accepted Answer

A)  DNA. 
B)  protein. 
C)  R- strain. 
D)  RNA. 
E)  S- strain. 
A)  DNA. 
B)  protein. 
C)  R- strain. 
D)  RNA. 
E)  S- strain.

Question 17

If cytosine makes up 15% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?

Accepted Answer

The answer of If cytosine makes up 15% of the...

Question 18

When Hershey and Chase labeled phage with radioactive phosphorus, they concluded that the phage injects its DNA, not protein, into its host. These conclusions were based on the observation that the radioactive DNA ended up where?

Accepted Answer

The DNA en

Question 19

The basic subunits of DNA are the .

Accepted Answer

The answer of The basic subunits of DNA are the...

Question 20

Which of the following is TRUE regarding the genetic information in the cells of your body?

Accepted Answer

A)  Each type of body cell contains only the genetic information it needs to be that type of cell. 
B)  The genetic information in your body cells changes in a predictable manner as you grow and develop. 
C)  The genetic information in almost all of your body cells is identical. 
D)  Different kinds of body cells contain different genetic information. 
A)  Each type of body cell contains only the genetic information it needs to be that type of cell. 
B)  The genetic information in your body cells changes in a predictable manner as you grow and develop. 
C)  The genetic information in almost all of your body cells is identical. 
D)  Different kinds of body cells contain different genetic information.

Exam 12: Dna: the Molecule of Heredity

At one end of a double helix, one strand has a free sugar (3') group and the other strand has a free group.

When a cell divides, each daughter cell receives

DNA replication uses base pairing to ensure genetic constancy.

Which of the following is TRUE about the accuracy of DNA replication?

All of the following occur during DNA replication EXCEPT

In a DNA molecule, base pairing occurs between

During DNA replication, the continuous daughter strand is the leading strand.

DNA possesses

The two polynucleotide chains in a DNA molecule are attached to each other by

The way DNA stores information is through the of bases.

Chargaff found that the amounts of the four bases vary from species to species, but the amount of adenine always equals the amount of guanine and the amount of thymine always equals the amount of cytosine.

Semiconservative DNA replication means that

Most mutations are harmful or neutral, although in rare instances some can be beneficial.

DNA polymerase always moves from along the strand resulting in DNA replication to be continuous on one strand and discontinuous on the other.

When chromosomes replicate

The hereditary material present in all cells is

If cytosine makes up 15% of the bases in a sample of DNA from an organism, then adenine makes up what percentage of the bases?

When Hershey and Chase labeled phage with radioactive phosphorus, they concluded that the phage injects its DNA, not protein, into its host. These conclusions were based on the observation that the radioactive DNA ended up where?

The basic subunits of DNA are the .

Which of the following is TRUE regarding the genetic information in the cells of your body?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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