Question 1

What is the basic problem with artificial cloning of adult cells?

Accepted Answer

A)  adult cells are already differentiated 
B)  adult cells do not divide 
C)  adult cells have too many mutations 
D)  adult cells only have a subset of the original embryonic DNA 
E)  more than one of these is a basic problem with the artificial cloning of adult cells 
A)  adult cells are already differentiated 
B)  adult cells do not divide 
C)  adult cells have too many mutations 
D)  adult cells only have a subset of the original embryonic DNA 
E)  more than one of these is a basic problem with the artificial cloning of adult cells

Question 2

DNA polymerase

Accepted Answer

A)  is an enzyme. 
B)  adds new nucleotides to a strand. 
C)  proofreads DNA strands to see that they are correct. 
D)  derives energy from free nucleotides for strand assembly. 
E)  is all of these. 
A)  is an enzyme. 
B)  adds new nucleotides to a strand. 
C)  proofreads DNA strands to see that they are correct. 
D)  derives energy from free nucleotides for strand assembly. 
E)  is all of these.

Question 3

Which of the following female organisms do NOT contain XX chromosomes?

Accepted Answer

A)  humans 
B)  fruit flies 
C)  cows 
D)  butterflies 
E)  cats 
A)  humans 
B)  fruit flies 
C)  cows 
D)  butterflies 
E)  cats

Question 4

From X-ray diffraction data,which of the following was determined about DNA?

Accepted Answer

A)  The amount of adenine equaled the amount of thymine. 
B)  Different species have different proportions of adenine and guanine. 
C)  Nitrogen containing bases were arranged on the outside of the double helix structure. 
D)  The shape of the molecule could be a double helix. 
E)  All of these were determined. 
A)  The amount of adenine equaled the amount of thymine. 
B)  Different species have different proportions of adenine and guanine. 
C)  Nitrogen containing bases were arranged on the outside of the double helix structure. 
D)  The shape of the molecule could be a double helix. 
E)  All of these were determined.

Question 5

Four of the five answers listed below are people who were involved in the discovery of the structure of DNA.Select the EXCEPTION.

Accepted Answer

A)  Wilkins 
B)  Wallace 
C)  Watson 
D)  Franklin 
E)  Crick 
A)  Wilkins 
B)  Wallace 
C)  Watson 
D)  Franklin 
E)  Crick

Question 6

Each DNA strand serves as which of the following during DNA synthesis?

Accepted Answer

A)  a replicate 
B)  a substitute 
C)  a template 
D)  a source of nucleotides 
E)  all of these 
A)  a replicate 
B)  a substitute 
C)  a template 
D)  a source of nucleotides 
E)  all of these

Question 7

If a person had defective centromeres,which of the following would result?

Accepted Answer

A)  the DNA would not coil around histones 
B)  DNA could not duplicate 
C)  sister chromatids could not attach to each other 
D)  the chromosome number would be reduced 
E)  none of these would result 
A)  the DNA would not coil around histones 
B)  DNA could not duplicate 
C)  sister chromatids could not attach to each other 
D)  the chromosome number would be reduced 
E)  none of these would result

Question 8

Match the correct nucleotide with its description.
a.guanine
b.cytosine
c.adenine
d.thymine
e.uracil
-This nucleotide is a double-ringed molecule and develops three hydrogen bonds with its complement in the double helix DNA.

Accepted Answer

The answer of Match the correct nucleotide with its description.
a.guanine
b.cytosine
c.adenine
d.thymine
e.uracil
-This...

Question 9

Before a cell divides it must ____ its genetic information.

Accepted Answer

A)  duplicate 
B)  translate 
C)  isolate 
D)  protect 
E)  distribute 
A)  duplicate 
B)  translate 
C)  isolate 
D)  protect 
E)  distribute

Question 10

Which of the following is NOT true about complementary base pairing in a DNA molecule?

Accepted Answer

A)  covalent bonds connect two complementary bases. 
B)  adenine and thymine are complements. 
C)  guanine and cytosine are complements. 
D)  double-ring nitrogen containing bases connect to single-ring nitrogen containing bases. 
E)  more than one of these is NOT true. 
A)  covalent bonds connect two complementary bases. 
B)  adenine and thymine are complements. 
C)  guanine and cytosine are complements. 
D)  double-ring nitrogen containing bases connect to single-ring nitrogen containing bases. 
E)  more than one of these is NOT true.

Question 11

What is the number of chromosomes found in an oak tree?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  12 
E)  24 
A)  2 
B)  4 
C)  8 
D)  12 
E)  24

Question 12

Match the mutagen (mutation causing agent)with the statement or statements that apply to it.
a.Chargaff
b.UV light
c.tobacco smoke chemicals
-this mutagen causes dimers to form

Accepted Answer

The answer of Match the mutagen (mutation causing agent)with the...

Question 13

In DNA molecules,

Accepted Answer

A)  the nucleotides are arranged in a linear, unbranched pattern. 
B)  the nitrogenous bases are found on the outside of the molecule. 
C)  the phosphate-sugar pattern runs the same way on each DNA strand. 
D)  the backbone is internal to the molecule. 
E)  the pairing of bases is non-specific. 
A)  the nucleotides are arranged in a linear, unbranched pattern. 
B)  the nitrogenous bases are found on the outside of the molecule. 
C)  the phosphate-sugar pattern runs the same way on each DNA strand. 
D)  the backbone is internal to the molecule. 
E)  the pairing of bases is non-specific.

Question 14

In the technique of artificial twinning,

Accepted Answer

A)  two embryos are fused. 
B)  an embryo is teased apart. 
C)  two sperm are used to fertilize a single egg. 
D)  two eggs and two sperm are used to form two embryos. 
E)  an embryo's nucleus is removed and replaced with an adult embryo. 
A)  two embryos are fused. 
B)  an embryo is teased apart. 
C)  two sperm are used to fertilize a single egg. 
D)  two eggs and two sperm are used to form two embryos. 
E)  an embryo's nucleus is removed and replaced with an adult embryo.

Question 15

Which of the following nitrogen containing bases is NOT found in molecules of DNA?

Accepted Answer

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

Question 16

If one strand of a DNA molecule read ACCTTGAC,what would the other side read?

Accepted Answer

A)  ACCTTGAC 
B)  TGGAACTG 
C)  GTTCCAGT 
D)  CAAGGTGA 
E)  none of these 
A)  ACCTTGAC 
B)  TGGAACTG 
C)  GTTCCAGT 
D)  CAAGGTGA 
E)  none of these

Question 17

If a DNA molecule was a spiral staircase,what would the steps of the staircase be?

Accepted Answer

A)  covalent bonds. 
B)  deoxyribose. 
C)  base pairs. 
D)  hydrogen bonds. 
E)  phosphate. 
A)  covalent bonds. 
B)  deoxyribose. 
C)  base pairs. 
D)  hydrogen bonds. 
E)  phosphate.

Question 18

The DNA-histone complex is most analogous to

Accepted Answer

A)  a pearl necklace. 
B)  a waterproof watch. 
C)  a microwave oven. 
D)  the gears on a bicycle. 
E)  a flashlight. 
A)  a pearl necklace. 
B)  a waterproof watch. 
C)  a microwave oven. 
D)  the gears on a bicycle. 
E)  a flashlight.

Question 19

What happens first in DNA replication?

Accepted Answer

A)  the DNA molecule unwinds 
B)  DNA polymerase brings new nucleotides to the old DNA strand 
C)  DNA ligase activity begins 
D)  hydrogen bonds are broken 
E)  none of these things happen first 
A)  the DNA molecule unwinds 
B)  DNA polymerase brings new nucleotides to the old DNA strand 
C)  DNA ligase activity begins 
D)  hydrogen bonds are broken 
E)  none of these things happen first

Question 20

Rosalind Franklin's research contribution was essential in

Accepted Answer

A)  establishing the single-stranded nature of DNA. 
B)  establishing the principle of base pairing. 
C)  establishing most of the principal structural features of DNA. 
D)  sequencing DNA molecules. 
E)  determining the bonding energy of DNA molecules. 
A)  establishing the single-stranded nature of DNA. 
B)  establishing the principle of base pairing. 
C)  establishing most of the principal structural features of DNA. 
D)  sequencing DNA molecules. 
E)  determining the bonding energy of DNA molecules.

Exam 6: DNA Structure and Function

What is the basic problem with artificial cloning of adult cells?

DNA polymerase

Which of the following female organisms do NOT contain XX chromosomes?

From X-ray diffraction data,which of the following was determined about DNA?

Four of the five answers listed below are people who were involved in the discovery of the structure of DNA.Select the EXCEPTION.

Each DNA strand serves as which of the following during DNA synthesis?

If a person had defective centromeres,which of the following would result?

Match the correct nucleotide with its description. a.guanine b.cytosine c.adenine d.thymine e.uracil -This nucleotide is a double-ringed molecule and develops three hydrogen bonds with its complement in the double helix DNA.

Before a cell divides it must ____ its genetic information.

Which of the following is NOT true about complementary base pairing in a DNA molecule?

What is the number of chromosomes found in an oak tree?

Match the mutagen (mutation causing agent)with the statement or statements that apply to it. a.Chargaff b.UV light c.tobacco smoke chemicals -this mutagen causes dimers to form

In DNA molecules,

In the technique of artificial twinning,

Which of the following nitrogen containing bases is NOT found in molecules of DNA?

If one strand of a DNA molecule read ACCTTGAC,what would the other side read?

If a DNA molecule was a spiral staircase,what would the steps of the staircase be?

The DNA-histone complex is most analogous to

What happens first in DNA replication?

Rosalind Franklin's research contribution was essential in

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

Filters