Question 1

What was the first mammal cloned from an adult-differentiated 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 A

Question 2

Order the steps of somatic cell nuclear transfer.
-​Step 4

Accepted Answer

A) A skin cell harvested from a donor animal is injected into a region between the cytoplasm and the plasma membrane. 
B) Electric current causes foreign cell to fuse with and empty its nucleus into the cytoplasm of the egg. 
C) DNA from egg is suctioned out using a micropipette. 
D) Embryo forms. 
A) A skin cell harvested from a donor animal is injected into a region between the cytoplasm and the plasma membrane. 
B) Electric current causes foreign cell to fuse with and empty its nucleus into the cytoplasm of the egg. 
C) DNA from egg is suctioned out using a micropipette. 
D) Embryo forms. D

Question 3

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 5' to 3' on both DNA strands 
D)  the backbone is internal to the molecule 
E)  the pairing of bases is nonspecific 
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 5' to 3' on both DNA strands 
D)  the backbone is internal to the molecule 
E)  the pairing of bases is nonspecific A

Question 4

Each DNA strand has a backbone that consists of alternating _____.​

Accepted Answer

A)  ​amino acids 
B)  ​nitrogen-containing bases 
C)  ​hydrogen bonds 
D)  ​sugar and phosphate molecules 
E)  ​types of sugars 
A)  ​amino acids 
B)  ​nitrogen-containing bases 
C)  ​hydrogen bonds 
D)  ​sugar and phosphate molecules 
E)  ​types of sugars

Question 5

How many times does DNA wrap around a histone?​

Accepted Answer

A)  ​1 
B)  ​2 
C)  ​4 
D)  ​6 
E)  ​10 
A)  ​1 
B)  ​2 
C)  ​4 
D)  ​6 
E)  ​10

Question 6

A somatic cell is defined as a(n) _____.

Accepted Answer

A)  blastocyst 
B)  egg 
C)  body cell 
D)  cloned cell 
E)  sperm cell 
A)  blastocyst 
B)  egg 
C)  body cell 
D)  cloned cell 
E)  sperm cell

Question 7

Chemicals in tobacco smoke can cause _____.​

Accepted Answer

A)  ​DNA to break into pieces. 
B)  ​mispairing of bases. 
C)  ​kinking in the DNA molecule. 
D)  ​the formation of nucleotide dimers. 
E)  ​covalent bonding between adjacent adenine bases. 
A)  ​DNA to break into pieces. 
B)  ​mispairing of bases. 
C)  ​kinking in the DNA molecule. 
D)  ​the formation of nucleotide dimers. 
E)  ​covalent bonding between adjacent adenine bases.

Question 8

Using the diagram, indicate the molecule that functions at each step in DNA replication  
-DNA polymerase

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 9

Which pair represents the correct complementary bonding of nitrogen-containing bases in a DNA molecule?

Accepted Answer

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

Question 10

Answer the following questions by matching each term with the most appropriate description.
-varies between species

Accepted Answer

A) autosome 
B) centromere 
C) chromosome 
D) chromosome number 
E) diploid
F)sex chromosomes
G)sister chromatids 
A) autosome 
B) centromere 
C) chromosome 
D) chromosome number 
E) diploid
F)sex chromosomes
G)sister chromatids

Question 11

Answer the following questions by matching each term with the most appropriate description.
-process by which the DNA of an adult donor's body cell is transferred into an unfertilized egg

Accepted Answer

A) differentiation 
B) hybridization 
C) replication 
D) reproductive cloning 
E) somatic cell nuclear transfer 
A) differentiation 
B) hybridization 
C) replication 
D) reproductive cloning 
E) somatic cell nuclear transfer

Question 12

What does DNA ligase do?​

Accepted Answer

A)  ​breaks the hydrogen bonds between base pairs 
B)  ​seals gaps between assembled nucleotides 
C)  ​provides energy for nucleotide assembly 
D)  ​acts as an initiator to start the replication process 
E)  ​seals the ends of the replicated DNA molecule 
A)  ​breaks the hydrogen bonds between base pairs 
B)  ​seals gaps between assembled nucleotides 
C)  ​provides energy for nucleotide assembly 
D)  ​acts as an initiator to start the replication process 
E)  ​seals the ends of the replicated DNA molecule

Question 13

One of Chargaff's rules is _____.​

Accepted Answer

A)  ​different organisms have different proportions of adenine and guanine 
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)  ​the backbone of the DNA is comprised of alternating sugars and phosphates 
A)  ​different organisms have different proportions of adenine and guanine 
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)  ​the backbone of the DNA is comprised of alternating sugars and phosphates

Question 14

After DNA replication, each chromosome contains two sister _____.​

Accepted Answer

A)  ​chromatids 
B)  ​chromatins 
C)  ​chromosomes 
D)  ​centromeres 
E)  ​centrioles 
A)  ​chromatids 
B)  ​chromatins 
C)  ​chromosomes 
D)  ​centromeres 
E)  ​centrioles

Question 15

Somatic cell nuclear transfer (SCNT) is a reproductive cloning method in which _____.

Accepted Answer

A)  the DNA from a blastocyst is inserted into a donor egg 
B)  donor DNA is inserted into an unfertilized egg whose nucleus had been removed 
C)  an unfertilized egg is inserted into a donor uterus 
D)  an embryo is split during early development 
E)  the cell contents from a donor is inserted into a donor egg 
A)  the DNA from a blastocyst is inserted into a donor egg 
B)  donor DNA is inserted into an unfertilized egg whose nucleus had been removed 
C)  an unfertilized egg is inserted into a donor uterus 
D)  an embryo is split during early development 
E)  the cell contents from a donor is inserted into a donor egg

Question 16

Using the diagram, indicate the molecule that functions at each step in DNA replication  
-enzymes that break hydrogen bonds

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 17

Order the steps of somatic cell nuclear transfer.
-​Step 2

Accepted Answer

A) A skin cell harvested from a donor animal is injected into a region between the cytoplasm and the plasma membrane. 
B) Electric current causes foreign cell to fuse with and empty its nucleus into the cytoplasm of the egg. 
C) DNA from egg is suctioned out using a micropipette. 
D) Embryo forms. 
A) A skin cell harvested from a donor animal is injected into a region between the cytoplasm and the plasma membrane. 
B) Electric current causes foreign cell to fuse with and empty its nucleus into the cytoplasm of the egg. 
C) DNA from egg is suctioned out using a micropipette. 
D) Embryo forms.

Question 18

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 19

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that arose from _____.

Accepted Answer

A)  extensive exposure to long-wavelength radiation 
B)  contaminated DNA samples 
C)  chemical exposure 
D)  unrepaired DNA replication errors 
E)  extensive exposure to X-rays 
A)  extensive exposure to long-wavelength radiation 
B)  contaminated DNA samples 
C)  chemical exposure 
D)  unrepaired DNA replication errors 
E)  extensive exposure to X-rays

Question 20

Which scientist(s) discovered the basis for the base-pair rule, which states that the amounts of thymine and adenine are always equal in all DNA molecules, as are the amounts of cytosine and guanine?​

Accepted Answer

A)  ​Watson and Crick 
B)  ​Beadles 
C)  ​Chargaff 
D)  ​Franklin 
E)  ​Pauling 
A)  ​Watson and Crick 
B)  ​Beadles 
C)  ​Chargaff 
D)  ​Franklin 
E)  ​Pauling

Exam 7: Dna Structure and Function

What was the first mammal cloned from an adult-differentiated cell?

Order the steps of somatic cell nuclear transfer. -​Step 4

In DNA molecules, _____.

Each DNA strand has a backbone that consists of alternating _____.​

How many times does DNA wrap around a histone?​

A somatic cell is defined as a(n) _____.

Chemicals in tobacco smoke can cause _____.​

Using the diagram, indicate the molecule that functions at each step in DNA replication -DNA polymerase

Which pair represents the correct complementary bonding of nitrogen-containing bases in a DNA molecule?

Answer the following questions by matching each term with the most appropriate description. -varies between species

Answer the following questions by matching each term with the most appropriate description. -process by which the DNA of an adult donor's body cell is transferred into an unfertilized egg

What does DNA ligase do?​

One of Chargaff's rules is _____.​

After DNA replication, each chromosome contains two sister _____.​

Somatic cell nuclear transfer (SCNT) is a reproductive cloning method in which _____.

Using the diagram, indicate the molecule that functions at each step in DNA replication -enzymes that break hydrogen bonds

Order the steps of somatic cell nuclear transfer. -​Step 2

DNA replication is a ____ process.

Rosalind Franklin died from ovarian cancer at the age of 37. Her cancer was probably caused by DNA mutations that arose from _____.

Which scientist(s) discovered the basis for the base-pair rule, which states that the amounts of thymine and adenine are always equal in all DNA molecules, as are the amounts of cytosine and guanine?​

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and 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

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

Order the steps of somatic cell nuclear transfer. -Step 4

Each DNA strand has a backbone that consists of alternating _____.

How many times does DNA wrap around a histone?

Chemicals in tobacco smoke can cause _____.

What does DNA ligase do?

One of Chargaff's rules is _____.

After DNA replication, each chromosome contains two sister _____.

Order the steps of somatic cell nuclear transfer. -Step 2

Which scientist(s) discovered the basis for the base-pair rule, which states that the amounts of thymine and adenine are always equal in all DNA molecules, as are the amounts of cytosine and guanine?