Question 1

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

Accepted Answer

The answer of In somatic cell nuclear transfer,which of the...

Question 2

Four of the five answers listed below are related to the structure of DNA and/or its composition.Select the EXCEPTION.
A) protease
B) double helix
C) polymerase
D) phosphate
E) deoxyribose

Accepted Answer

Protease is an enzyme that breaks down proteins and is not related to the structure or composition of DNA. The other choices are all directly related to DNA structure or composition.

Question 3

In the technique of artificial twinning,
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.

Accepted Answer

In the technique of artificial twinning, an embryo is teased apart to create two separate embryos that are then implanted into a surrogate mother. This results in genetically identical offspring.

Question 4

Four of the five answers listed below are related to DNA replication.Select the EXCEPTION.
A) base pairing
B) hydrogen bonding
C) semiconservative
D) DNA ligase
E) glycolysis

Accepted Answer

Glycolysis is a metabolic pathway that occurs in the cytoplasm and is involved in the breakdown of glucose for energy production. It is not directly related to DNA replication, which takes place in the nucleus. The other choices (A, B, C, and D) are all important concepts or enzymes involved in DNA replication.

Question 5

What is the basic problem with 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

Accepted Answer

The basic problem with artificial cloning of adult cells is that they are already differentiated, meaning they have already developed into a specific type of cell with a specific function. This makes it difficult to turn them back into pluripotent stem cells that can develop into any type of cell, which is necessary for successful cloning.

Question 6

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 two hydrogen bonds with its complementary 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 7

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 phosphates of DNA were on the outside and bases on the inside

Accepted Answer

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

Question 8

Match the correct nucleotide with its description.
a.guanine
b.cytosine
c.adenine
d.thymine
e.uracil
-This nucleotide is not incorporated into the structure of the DNA helix.

Accepted Answer

Uracil is not incorporated into the structure of DNA helix, but only in RNA. The other nucleotides listed (A, C, G, T) are all part of DNA. The term "pyrimidine" refers to a class of nucleotides that includes both cytosine and thymine, so it is not the best choice for this question.

Question 9

Four of the five items listed below are related to genetic information.Select the EXCEPTION.
A) chromatids
B) centromere
C) chromosome
D) phosphorylation
E) polymerase

Accepted Answer

Phosphorylation is the addition of a phosphate group to a molecule and is not directly related to genetic information. The other options are all related to genetic information, specifically DNA structure and replication. Chromatids are duplicated chromosomes that split during cell division, centromeres are the point of attachment between sister chromatids, chromosomes are structures that contain genetic material, and polymerase is an enzyme involved in DNA replication.

Question 10

Which of the following methods would NOT result in identical twin organisms?
A) asexual reproduction
B) embryo splitting
C) reproductive cloning
D) somatic cell nuclear transfer
E) two separate eggs fertilized by two separate sperm

Accepted Answer

Identical twins are formed from a single fertilized egg that splits into two embryos. Option E, two separate eggs fertilized by two separate sperm, cannot result in identical twin organisms as they come from different fertilized eggs.

Question 11

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 12

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 13

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 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
-discovered that the amount of adenine in a DNA molecule was equal to the amount of thymine

Accepted Answer

Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine.

Question 15

What are the benefits,real and potential,of adult cell cloning?
A) the timing of the production of offspring can be controlled
B) cloned animals will be consistently the same as their donor
C) cloned cells can be used to study the processes of cell differentiation
D) cloned cells can be used to study the process of diseases and thus potentially lead to cures
E) all of these are benefits of adult cell cloning

Accepted Answer

All of the benefits listed are potential benefits of adult cell cloning. The ability to control timing of offspring production is useful in animal breeding and conservation efforts. Creating consistently identical clones can be useful in scientific research and in agriculture for producing high-quality livestock. Cloning cells can also be used to study cell differentiation and diseases, leading to potential cures and medical advancements.

Question 16

MATCHING
Answer the following questions by matching each term with the most appropriate description.
a.Chargaff
b.Franklin
c.Watson and Crick
d.Wilkins
-this researcher's work suggested that DNA was double helix

Accepted Answer

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

Question 17

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 sequence of DNA differs in different organisms

Accepted Answer

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

Question 18

Four of the five answers listed below are people who were involved in the discovery of the structure of DNA.Select the EXCEPTION.
A) Wilkins
B) Wallace
C) Watson
D) Franklin
E) Crick

Accepted Answer

Wallace is not one of the individuals who were involved in the discovery of the structure of DNA. The correct choices are A) Wilkins, C) Watson, D) Franklin, and E) Crick.

Question 19

Four of the five chemicals listed below are bases used to construct nucleic acids.Select the EXCEPTION.
A) adenine
B) cytosine
C) thymine
D) guanine
E) cysteine

Accepted Answer

Cysteine is not a base used to construct nucleic acids. It is an amino acid used in protein synthesis. The other options (A, B, C, D) are all nitrogenous bases that are used to make up the nucleotides in DNA and RNA.

Question 20

MATCHING
Answer the following questions by matching each term with the most appropriate description.
a.Chargaff
b.Franklin
c.Watson and Crick
d.Wilkins
-built the first precise model of DNA that implied its method of replication

Accepted Answer

Watson and Crick are credited with building the first precise model of DNA, which suggested a mechanism for its replication. This discovery was pivotal in understanding the molecular basis of inheritance.

Quiz 6: DNA Structure and Function

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

Four of the five answers listed below are related to the structure of DNA and/or its composition.Select the EXCEPTION.

In the technique of artificial twinning,

Four of the five answers listed below are related to DNA replication.Select the EXCEPTION.

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

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 two hydrogen bonds with its complementary in the double helix DNA.

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 phosphates of DNA were on the outside and bases on the inside

Match the correct nucleotide with its description. a.guanine b.cytosine c.adenine d.thymine e.uracil -This nucleotide is not incorporated into the structure of the DNA helix.

Four of the five items listed below are related to genetic information.Select the EXCEPTION.

Which of the following methods would NOT result in identical twin organisms?

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

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.

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.

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

What are the benefits,real and potential,of adult cell cloning?

MATCHING Answer the following questions by matching each term with the most appropriate description. a.Chargaff b.Franklin c.Watson and Crick d.Wilkins -this researcher's work suggested that DNA was double helix

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 sequence of DNA differs in different organisms

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

Four of the five chemicals listed below are bases used to construct nucleic acids.Select the EXCEPTION.

MATCHING Answer the following questions by matching each term with the most appropriate description. a.Chargaff b.Franklin c.Watson and Crick d.Wilkins -built the first precise model of DNA that implied its method of replication