Question 1

The most common source of DNA mutation is

Accepted Answer

A)  cigarette smoke 
B)  UV light 
C)  errors in DNA replication 
D)  errors in protein synthesis 
E)  pesticides on the food we eat 
A)  cigarette smoke 
B)  UV light 
C)  errors in DNA replication 
D)  errors in protein synthesis 
E)  pesticides on the food we eat

Question 2

Match the correct nucleotide with its description.
a.guanine
b.cytosine
c.adenine
d.thymine
e.uracil
-The amount of adenine was always equal to the amount of this.

Accepted Answer

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

Question 3

After DNA replication,each chromosome contains

Accepted Answer

A)  two sister chromatids. 
B)  two sister chromatins. 
C)  two sister chromosomes. 
D)  two sister centromeres. 
E)  two sister centrioles. 
A)  two sister chromatids. 
B)  two sister chromatins. 
C)  two sister chromosomes. 
D)  two sister centromeres. 
E)  two sister centrioles.

Question 4

DNA replication is a ____ process.

Accepted Answer

A)  noncomplementary 
B)  semiconservative 
C)  semisynthetic 
D)  mutational 
E)  denaturation 
A)  noncomplementary 
B)  semiconservative 
C)  semisynthetic 
D)  mutational 
E)  denaturation

Question 5

In somatic cell nuclear transfer,which of the following occurs?

Accepted Answer

A)  the adult cell injected into the egg cell immediately starts dividing. 
B)  an electric current causes the injected adult cell to empty its nucleus into the egg cytoplasm. 
C)  DNA repair enzymes repair all of the adult cell's mutations before the cloned cell begins cell division. 
D)  only the nucleus of the adult cell is injected into the egg cell. 
E)  none of these things happen in somatic cell nuclear transfer 
A)  the adult cell injected into the egg cell immediately starts dividing. 
B)  an electric current causes the injected adult cell to empty its nucleus into the egg cytoplasm. 
C)  DNA repair enzymes repair all of the adult cell's mutations before the cloned cell begins cell division. 
D)  only the nucleus of the adult cell is injected into the egg cell. 
E)  none of these things happen in somatic cell nuclear transfer

Question 6

Rosalind Franklin used which techniques to determine many of the physical characteristics of DNA?

Accepted Answer

A)  scanning electron microscopy 
B)  transmission electron microscopy 
C)  recombinant DNA techniques 
D)  X-ray crystallography 
E)  DNA profiling 
A)  scanning electron microscopy 
B)  transmission electron microscopy 
C)  recombinant DNA techniques 
D)  X-ray crystallography 
E)  DNA profiling

Question 7

What are the length of DNA from a single human cell?

Accepted Answer

A)  2 nanonmeters 
B)  2 micrometers 
C)  2 millimeters 
D)  2 centimeters 
E)  2 meters 
A)  2 nanonmeters 
B)  2 micrometers 
C)  2 millimeters 
D)  2 centimeters 
E)  2 meters

Question 8

Which of the following statements is NOT correct about autosomes?

Accepted Answer

A)  Autosomes are chromosomes that are found in both males and females. 
B)  In a human cell, all chromosomes are autosomes, except chromosomes "X" and "Y." 
C)  In birds, moths, and butterflies, autosomes determine the sex of the individual. 
D)  A characteristic carried by autosomes would be passed to offspring males and females. 
E)  More than one of these statements is incorrect. 
A)  Autosomes are chromosomes that are found in both males and females. 
B)  In a human cell, all chromosomes are autosomes, except chromosomes "X" and "Y." 
C)  In birds, moths, and butterflies, autosomes determine the sex of the individual. 
D)  A characteristic carried by autosomes would be passed to offspring males and females. 
E)  More than one of these statements is incorrect.

Question 9

Body cells of human females contain

Accepted Answer

A)  one X chromosome and one Y chromosome. 
B)  two X chromosomes. 
C)  two Y chromosomes. 
D)  two O chromosomes. 
E)  chromosomes X, Y, and O. 
A)  one X chromosome and one Y chromosome. 
B)  two X chromosomes. 
C)  two Y chromosomes. 
D)  two O chromosomes. 
E)  chromosomes X, Y, and O.

Question 10

In some species,the sex of the future individual is decided by environmental conditions and not by sex chromosomes.In which of the following species is sex decided by temperature?

Accepted Answer

A)  birds 
B)  fruit flies 
C)  frogs 
D)  rabbits 
E)  zebras 
A)  birds 
B)  fruit flies 
C)  frogs 
D)  rabbits 
E)  zebras

Question 11

Which of the following statements is INCORRECT about eukaryotic chromosomes?

Accepted Answer

A)  The number of chromosomes varies from one species to another. 
B)  All eukaryotes have the same system of autosomes and sex chromosomes. 
C)  A chromosome consists of DNA associated with histone proteins. 
D)  After duplication, all paired chromosomes are attached at the centromere. 
E)  After duplication, each chromosome consists of two sister chromatids. 
A)  The number of chromosomes varies from one species to another. 
B)  All eukaryotes have the same system of autosomes and sex chromosomes. 
C)  A chromosome consists of DNA associated with histone proteins. 
D)  After duplication, all paired chromosomes are attached at the centromere. 
E)  After duplication, each chromosome consists of two sister chromatids.

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 covalent bonding between adjacent cytosine bases

Accepted Answer

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

Question 13

Which of the following was determined by Watson and Crick?

Accepted Answer

A)  the amount of adenine in a DNA molecule equals the amount of thymine 
B)  DNA is a double helix 
C)  DNA has a phosphate backbone 
D)  the sequence of DNA bases is different in different organisms 
E)  none of these were determined by Watson and Crick 
A)  the amount of adenine in a DNA molecule equals the amount of thymine 
B)  DNA is a double helix 
C)  DNA has a phosphate backbone 
D)  the sequence of DNA bases is different in different organisms 
E)  none of these were determined by Watson and Crick

Question 14

MATCHING
Answer the following questions by matching each term with the most appropriate description.
a.Chargaff
b.Franklin
c.Watson and Crick
d.Wilkins
-used X-ray diffraction technology to elucidate the structure of DNA

Accepted Answer

The answer of MATCHING
Answer the following questions by matching each...

Question 15

What was the first animal cloned from an adult cell?

Accepted Answer

A)  a sheep 
B)  a dog 
C)  a cow 
D)  a cat 
E)  a mouse 
A)  a sheep 
B)  a dog 
C)  a cow 
D)  a cat 
E)  a mouse

Question 16

Which of the following male organisms do NOT contain XY chromosomes?

Accepted Answer

A)  mice 
B)  fruit flies 
C)  horses 
D)  pigs 
E)  moths 
A)  mice 
B)  fruit flies 
C)  horses 
D)  pigs 
E)  moths

Question 17

The primary function of DNA ligase is to

Accepted Answer

A)  cut the two strands of DNA molecule prior to replication. 
B)  attach free nucleotides to a growing chain. 
C)  remove bases that might have been inserted incorrectly. 
D)  seal any tiny gaps in the new DNA. 
E)  fragment old DNA that is no longer of use to the cell. 
A)  cut the two strands of DNA molecule prior to replication. 
B)  attach free nucleotides to a growing chain. 
C)  remove bases that might have been inserted incorrectly. 
D)  seal any tiny gaps in the new DNA. 
E)  fragment old DNA that is no longer of use to the cell.

Question 18

MATCHING
Answer the following questions by matching each term with the most appropriate description.
a.Chargaff
b.Franklin
c.Watson and Crick
d.Wilkins
-discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

Accepted Answer

The answer of MATCHING
Answer the following questions by matching each...

Question 19

The building blocks of nucleic acids are

Accepted Answer

A)  amino acids. 
B)  nucleotides. 
C)  5 carbon sugars. 
D)  fatty acids. 
E)  ribosomes. 
A)  amino acids. 
B)  nucleotides. 
C)  5 carbon sugars. 
D)  fatty acids. 
E)  ribosomes.

Question 20

Which of the following is one of Chargaff's rules?

Accepted Answer

A)  different organisms have different DNA sequences 
B)  the DNA molecule is a double helix 
C)  the two strands in a DNA molecule run in opposite directions 
D)  the backbone of a DNA molecule is on the outside 
E)  all of these are Chargaff's rules 
A)  different organisms have different DNA sequences 
B)  the DNA molecule is a double helix 
C)  the two strands in a DNA molecule run in opposite directions 
D)  the backbone of a DNA molecule is on the outside 
E)  all of these are Chargaff's rules

Exam 6: DNA Structure and Function

The most common source of DNA mutation is

Match the correct nucleotide with its description. a.guanine b.cytosine c.adenine d.thymine e.uracil -The amount of adenine was always equal to the amount of this.

After DNA replication,each chromosome contains

DNA replication is a ____ process.

In somatic cell nuclear transfer,which of the following occurs?

Rosalind Franklin used which techniques to determine many of the physical characteristics of DNA?

What are the length of DNA from a single human cell?

Which of the following statements is NOT correct about autosomes?

Body cells of human females contain

In some species,the sex of the future individual is decided by environmental conditions and not by sex chromosomes.In which of the following species is sex decided by temperature?

Which of the following statements is INCORRECT about eukaryotic chromosomes?

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 covalent bonding between adjacent cytosine bases

Which of the following was determined by Watson and Crick?

MATCHING Answer the following questions by matching each term with the most appropriate description. a.Chargaff b.Franklin c.Watson and Crick d.Wilkins -used X-ray diffraction technology to elucidate the structure of DNA

What was the first animal cloned from an adult cell?

Which of the following male organisms do NOT contain XY chromosomes?

The primary function of DNA ligase is to

MATCHING Answer the following questions by matching each term with the most appropriate description. a.Chargaff b.Franklin c.Watson and Crick d.Wilkins -discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

The building blocks of nucleic acids are

Which of the following is one of Chargaff's rules?

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

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