Question 1

Each DNA stranhas a backbonthat consists of alternating

Accepted Answer

A) purines and pyrimidines. 
B) nitrogen-containing bases. 
C) hydrogen bonds. 
D) sugar and phosphate molecules. 
E) amines and purines. 
A) purines and pyrimidines. 
B) nitrogen-containing bases. 
C) hydrogen bonds. 
D) sugar and phosphate molecules. 
E) amines and purines.

Question 2

Four of thfivanswers listebelow arnitrogenous bases founin DNA.Select thEXCEPTION.

Accepted Answer

A) G 
B) A 
C) U 
D) T 
E) C 
A) G 
B) A 
C) U 
D) T 
E) C

Question 3

Befora cell divides it needs to __________ 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 4

Thbuilding blocks of nucleic acids are

Accepted Answer

A) amino acids. 
B) nucleotides. 
C) pentose sugars. 
D) phosphate groups. 
E) nitrogenous bases. 
A) amino acids. 
B) nucleotides. 
C) pentose sugars. 
D) phosphate groups. 
E) nitrogenous bases.

Question 5

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 6

DNA varies frospecies to species in its

Accepted Answer

A) base-pair bonding only. 
B) relative amounts of nucleotide bases only. 
C) sequence of base pairs only. 
D) base-pair bonding and sequence of base pairs. 
E) relative amounts of nucleotide bases and sequences of base pairs. 
A) base-pair bonding only. 
B) relative amounts of nucleotide bases only. 
C) sequence of base pairs only. 
D) base-pair bonding and sequence of base pairs. 
E) relative amounts of nucleotide bases and sequences of base pairs.

Question 7

What was thfirst cloneanimal?

Accepted Answer

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

Question 8

Which of thfollowing is true?

Accepted Answer

A) Production of genetically identical plants was created by biologists in laboratories. 
B) Production of genetically identical animals was created by biologists in laboratories. 
C) Genetically identical organisms occur all the time in nature. 
D) All of these are true. 
E) None of these are true. 
A) Production of genetically identical plants was created by biologists in laboratories. 
B) Production of genetically identical animals was created by biologists in laboratories. 
C) Genetically identical organisms occur all the time in nature. 
D) All of these are true. 
E) None of these are true.

Question 9

In comparison between a spiral staircasana DNA molecule, thstep woulcorresponto

Accepted Answer

A) sugars. 
B) nucleotides. 
C) base pairs. 
D) hydrogen bonds. 
E) phosphates. 
A) sugars. 
B) nucleotides. 
C) base pairs. 
D) hydrogen bonds. 
E) phosphates.

Question 10

When step "d" is completed, thtwo DNA molecules producewill be

Accepted Answer

A) identical to the parent DNA but not to each other. 
B) identical to each other but not to the parent DNA. 
C) different from each other and the parent DNA. 
D) identical to each other and to the parent DNA. 
E) identical to each other and almost the same as the parent DNA. 
A) identical to the parent DNA but not to each other. 
B) identical to each other but not to the parent DNA. 
C) different from each other and the parent DNA. 
D) identical to each other and to the parent DNA. 
E) identical to each other and almost the same as the parent DNA.

Question 11

All human body cells contain 23 pairs of __________.

Accepted Answer

A) lipopolysaccharides. 
B) deoxyribonucleic acids. 
C) chromosomes. 
D) ribonucleic acids. 
E) amino acids. 
A) lipopolysaccharides. 
B) deoxyribonucleic acids. 
C) chromosomes. 
D) ribonucleic acids. 
E) amino acids.

Question 12

A eukaryotic chromosomconsists of

Accepted Answer

A) NAD and proteins. 
B) RNA and histones. 
C) DNA and histones. 
D) nucleic acid and proteins. 
E) FAD and histones. 
A) NAD and proteins. 
B) RNA and histones. 
C) DNA and histones. 
D) nucleic acid and proteins. 
E) FAD and histones.

Question 13

Four of thfivanswers listebelow arbases useto construct nucleic acids.Select thEXCEPTION.

Accepted Answer

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

Question 14

On average, how many attempts does it takto produconembryo?

Accepted Answer

A) about 10 
B) about 50 
C) hundreds 
D) thousands 
E) millions 
A) about 10 
B) about 50 
C) hundreds 
D) thousands 
E) millions

Question 15

In thtechniquof artificial twinning,

Accepted Answer

A) two zygotes are used. 
B) two parts of a tiny ball of cells splits. 
C) zygotes produced by in vitro fertilization are placed into a surrogate to begin division. 
D) no sperm is needed. 
E) all of these are true. 
A) two zygotes are used. 
B) two parts of a tiny ball of cells splits. 
C) zygotes produced by in vitro fertilization are placed into a surrogate to begin division. 
D) no sperm is needed. 
E) all of these are true.

Question 16

In DNA, complementary baspairing occurs between

Accepted Answer

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

Question 17

Cloning animals froadult cells has been challenging because

Accepted Answer

A) we are still limited technically. 
B) adult cells express only a fraction of their genetic information. 
C) it is nearly impossible today to reprogram an adult cell to work like an embryonic cell. 
D) of all of these reasons. 
E) none of these reasons. 
A) we are still limited technically. 
B) adult cells express only a fraction of their genetic information. 
C) it is nearly impossible today to reprogram an adult cell to work like an embryonic cell. 
D) of all of these reasons. 
E) none of these reasons.

Question 18

What was thnamof thfirst successfully cloneanimal?

Accepted Answer

A) Colly 
B) Dolly 
C) Bolly 
D) Rolly 
E) Molly 
A) Colly 
B) Dolly 
C) Bolly 
D) Rolly 
E) Molly

Question 19

If stretcheento end, th46 chromosomes in a human cell woulbabout __________ meters long.

Accepted Answer

A) 0.01 
B) 0.1 
C) 1 
D) 2 
E) 4 
A) 0.01 
B) 0.1 
C) 1 
D) 2 
E) 4

Question 20

DNA replication is a __________ process.

Accepted Answer

A) nondisruptive 
B) semiconservative 
C) progressive 
D) natural 
E) lytic 
A) nondisruptive 
B) semiconservative 
C) progressive 
D) natural 
E) lytic

Exam 6: Dna Structure and Function

Each DNA stranhas a backbonthat consists of alternating

Four of thfivanswers listebelow arnitrogenous bases founin DNA.Select thEXCEPTION.

Befora cell divides it needs to __________ its genetic information.

Thbuilding blocks of nucleic acids are

Body cells of human females contain

DNA varies frospecies to species in its

What was thfirst cloneanimal?

Which of thfollowing is true?

In comparison between a spiral staircasana DNA molecule, thstep woulcorresponto

When step "d" is completed, thtwo DNA molecules producewill be

All human body cells contain 23 pairs of __________.

A eukaryotic chromosomconsists of

Four of thfivanswers listebelow arbases useto construct nucleic acids.Select thEXCEPTION.

On average, how many attempts does it takto produconembryo?

In thtechniquof artificial twinning,

In DNA, complementary baspairing occurs between

Cloning animals froadult cells has been challenging because

What was thnamof thfirst successfully cloneanimal?

If stretcheento end, th46 chromosomes in a human cell woulbabout __________ meters long.

DNA replication is a __________ process.

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 Evolutionunit

Population Ecology

Communities and Ecosystems

The Biosphere and Human Eff Ects

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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