Question 1

Somatic cell nuclear transfer is used to create human embryos for research purposes in ____.

Accepted Answer

A)  ​embryo cloning 
B)  embryo splitting 
C)  ​therapeutic cloning 
D)  ​artificial twinning 
E)  ​stem cell cloning 
A)  ​embryo cloning 
B)  embryo splitting 
C)  ​therapeutic cloning 
D)  ​artificial twinning 
E)  ​stem cell cloning

Question 2

Which statement is false with regard to mutations?

Accepted Answer

A)  ​They are always dangerous. 
B)  ​They can occur as DNA replication errors. 
C)  ​They cannot be repaired after replication. 
D)  ​They may become cancerous. 
E)  ​They can be passed on to the next generation. 
A)  ​They are always dangerous. 
B)  ​They can occur as DNA replication errors. 
C)  ​They cannot be repaired after replication. 
D)  ​They may become cancerous. 
E)  ​They can be passed on to the next generation.

Question 3

Answer the following question in reference to the five nucleotides listed below:
-If one chain of a DNA molecule has a purine at a given position, this nucleotide complements it on the other chain.

Accepted Answer

A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil 
A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil

Question 4

If a mixture of bacteriophages, some labeled with radioactive sulfur and others labeled with radioactive phosphorus, is placed in a bacterial culture, the bacteria will eventually contain ____.

Accepted Answer

A)  ​primarily radioactive sulfur 
B)  ​primarily radioactive phosphorus 
C)  ​both radioactive sulfur and phosphorus 
D)  ​neither radioactive sulfur nor radioactive phosphorus 
E)  ​complete viruses with radioactive sulfur coats 
A)  ​primarily radioactive sulfur 
B)  ​primarily radioactive phosphorus 
C)  ​both radioactive sulfur and phosphorus 
D)  ​neither radioactive sulfur nor radioactive phosphorus 
E)  ​complete viruses with radioactive sulfur coats

Question 5

Choose the one most appropriate answer for each.
-Griffith

Accepted Answer

A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units 
A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units

Question 6

Friedrich Miescher is credited with _____.

Accepted Answer

A)  ​proposing DNA as the hereditary material 
B)  ​finding that proteins are the physical basis of inheritance 
C)  ​defining the laws of inheritance 
D)  ​being the first person to describe and extract DNA 
E)  ​determining that proteins are composed of unlimited combinations of twenty amino acids 
A)  ​proposing DNA as the hereditary material 
B)  ​finding that proteins are the physical basis of inheritance 
C)  ​defining the laws of inheritance 
D)  ​being the first person to describe and extract DNA 
E)  ​determining that proteins are composed of unlimited combinations of twenty amino acids

Question 7

Which structures have the same length, shape, and centromere location?

Accepted Answer

A)  ​karyotypes 
B)  ​histones 
C)  ​bacteriophages 
D)  ​nucleosomes 
E)  ​autosome pairs 
A)  ​karyotypes 
B)  ​histones 
C)  ​bacteriophages 
D)  ​nucleosomes 
E)  ​autosome pairs

Question 8

Figure 8.4
  
-The accompanying figure represents the research of which scientist(s)?

Accepted Answer

A)  ​Delbrück 
B)  ​Avery and McCarty 
C)  ​Chagraff 
D)  ​Luria 
E)  ​Hershey and Chase 
A)  ​Delbrück 
B)  ​Avery and McCarty 
C)  ​Chagraff 
D)  ​Luria 
E)  ​Hershey and Chase

Question 9

Answer the following question in reference to the five nucleotides listed below:
-This nucleotide is a double-ring molecule.

Accepted Answer

A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil 
A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil

Question 10

Which discovery was determined about DNA from x-ray diffraction data?​

Accepted Answer

A)  ​DNA is uniform in length. 
B)  ​DNA is short and narrow. 
C)  ​DNA has a repeating pattern. 
D)  ​DNA molecules are flat. 
E)  ​DNA molecules are round. 
A)  ​DNA is uniform in length. 
B)  ​DNA is short and narrow. 
C)  ​DNA has a repeating pattern. 
D)  ​DNA molecules are flat. 
E)  ​DNA molecules are round.

Question 11

In a 3-D double helix model of DNA, the center consists of ____.

Accepted Answer

A)  ​deoxyribose sugars 
B)  ​hydrogen bonds 
C)  ​nucleotide base pairs 
D)  ​phosphate groups 
E)  ​sugar-phosphate backbones 
A)  ​deoxyribose sugars 
B)  ​hydrogen bonds 
C)  ​nucleotide base pairs 
D)  ​phosphate groups 
E)  ​sugar-phosphate backbones

Question 12

Which technique did Rosalind Franklin use to determine many aspects of DNA's structure?

Accepted Answer

A)  ​transformation 
B)  ​transmission electron microscopy 
C)  ​density-gradient centrifugation 
D)  ​x-ray crystallography 
E)  ​chromatography 
A)  ​transformation 
B)  ​transmission electron microscopy 
C)  ​density-gradient centrifugation 
D)  ​x-ray crystallography 
E)  ​chromatography

Question 13

Franklin's assignment at Cambridge was to investigate the structure of ____.

Accepted Answer

A)  ​proteins 
B)  ​ultraviolet radiation 
C)  ​DNA 
D)  ​embryonic fluid 
E)  ​lipids 
A)  ​proteins 
B)  ​ultraviolet radiation 
C)  ​DNA 
D)  ​embryonic fluid 
E)  ​lipids

Question 14

Figure 8.3
 
Answer the following question about Griffith's experiments involving Streptococcus pneumoniae. 
-If an injection to the mouse contains live S strain Streptococcus pneumonia, ____.

Accepted Answer

A)  ​the mouse will die 
B)  ​live R strain will be detected in the mouse's blood 
C)  ​the mouse will live 
D)  ​no live S strain will be detected in the mouse's blood 
E)  the live S strain bacteria will lose their pathogenicity​ 
A)  ​the mouse will die 
B)  ​live R strain will be detected in the mouse's blood 
C)  ​the mouse will live 
D)  ​no live S strain will be detected in the mouse's blood 
E)  the live S strain bacteria will lose their pathogenicity​

Question 15

Consider the Hershey-Chase experiment. Is their choice of a bacteriophage unusual?

Accepted Answer

​At first glance, it is very unusual. Vi

Question 16

Rosalind Franklin is credited with ____.

Accepted Answer

A)  ​discovering DNA's double helical structure 
B)  ​discovering DNA 
C)  ​first isolating DNA 
D)  ​building the first DNA model 
E)  ​cloning DNA 
A)  ​discovering DNA's double helical structure 
B)  ​discovering DNA 
C)  ​first isolating DNA 
D)  ​building the first DNA model 
E)  ​cloning DNA

Question 17

Choose the one most appropriate answer for each.
-Hershey and Chase

Accepted Answer

A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units 
A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units

Question 18

Figure 8.3
 
Answer the following question about Griffith's experiments involving Streptococcus pneumoniae. 
-If an injection to the mouse contains live R strain and heat-killed S strain Streptococcus pneumonia, ____.

Accepted Answer

A)  ​the mouse will live 
B)  ​the mouse will became fatally ill and live S strain bacteria will be detected in its blood 
C)  ​the mouse's blood will contain live pathogenic R strain bacteria 
D)  ​the dead S strain bacteria will transform to live R strain bacteria 
E)  ​DNA from the live R strain bacteria will revive the dead S strain bacteria 
A)  ​the mouse will live 
B)  ​the mouse will became fatally ill and live S strain bacteria will be detected in its blood 
C)  ​the mouse's blood will contain live pathogenic R strain bacteria 
D)  ​the dead S strain bacteria will transform to live R strain bacteria 
E)  ​DNA from the live R strain bacteria will revive the dead S strain bacteria

Question 19

Choose the one most appropriate answer for each.
-Miescher

Accepted Answer

A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units 
A) discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria 
B) first to describe DNA and extract it from cell nuclei 
C) discovered that DNA-digesting enzymes prevented bacterial transformation 
D) the first to build an accurate model of DNA and to describe it explicitly in a publication 
E) the first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)worked at King's College at the same time as Franklin
H)obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units

Question 20

Answer the following question in reference to the five nucleotides listed below:
-Erwin Chargaff's data indicates that within a species, the amount of adenine is always equal to the amount of this nucleotide.

Accepted Answer

A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil 
A) ​guanine 
B) ​cytosine 
C) ​pyrimidine 
D) ​thymine 
E) ​uracil

Exam 8: Dna Structure and Function

Somatic cell nuclear transfer is used to create human embryos for research purposes in ____.

Which statement is false with regard to mutations?

Answer the following question in reference to the five nucleotides listed below: -If one chain of a DNA molecule has a purine at a given position, this nucleotide complements it on the other chain.

If a mixture of bacteriophages, some labeled with radioactive sulfur and others labeled with radioactive phosphorus, is placed in a bacterial culture, the bacteria will eventually contain ____.

Choose the one most appropriate answer for each. -Griffith

Friedrich Miescher is credited with _____.

Which structures have the same length, shape, and centromere location?

Figure 8.4 -The accompanying figure represents the research of which scientist(s)?

Answer the following question in reference to the five nucleotides listed below: -This nucleotide is a double-ring molecule.

Which discovery was determined about DNA from x-ray diffraction data?​

In a 3-D double helix model of DNA, the center consists of ____.

Which technique did Rosalind Franklin use to determine many aspects of DNA's structure?

Franklin's assignment at Cambridge was to investigate the structure of ____.

Figure 8.3 Answer the following question about Griffith's experiments involving Streptococcus pneumoniae. -If an injection to the mouse contains live S strain Streptococcus pneumonia, ____.

Consider the Hershey-Chase experiment. Is their choice of a bacteriophage unusual?

Rosalind Franklin is credited with ____.

Choose the one most appropriate answer for each. -Hershey and Chase

Figure 8.3 Answer the following question about Griffith's experiments involving Streptococcus pneumoniae. -If an injection to the mouse contains live R strain and heat-killed S strain Streptococcus pneumonia, ____.

Choose the one most appropriate answer for each. -Miescher

Answer the following question in reference to the five nucleotides listed below: -Erwin Chargaff's data indicates that within a species, the amount of adenine is always equal to the amount of this nucleotide.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Filters

Which discovery was determined about DNA from x-ray diffraction data?