Question 1

Which of the following can be determined directly from X-ray diffraction photographs of crystallized DNA?

Accepted Answer

A) the diameter of the helix 
B) the rate of replication 
C) the sequence of nucleotides 
D) the bond angles of the subunits 
E) the frequency of A vs. T nucleotides 
A) the diameter of the helix 
B) the rate of replication 
C) the sequence of nucleotides 
D) the bond angles of the subunits 
E) the frequency of A vs. T nucleotides

Question 2

In an analysis of the nucleotide composition of DNA, which of the following will be found?

Accepted Answer

A) A = C 
B) A = G and C = T 
C) A + C = G + T 
D) G + C = T + A 
A) A = C 
B) A = G and C = T 
C) A + C = G + T 
D) G + C = T + A

Question 3

In his work with pneumonia-causing bacteria and mice, Griffith found that

Accepted Answer

A) the protein coat from pathogenic cells was able to transform nonpathogenic cells. 
B) heat-killed pathogenic cells caused pneumonia. 
C) some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic. 
D) the polysaccharide coat of bacteria caused pneumonia. 
E) bacteriophages injected DNA into bacteria. 
A) the protein coat from pathogenic cells was able to transform nonpathogenic cells. 
B) heat-killed pathogenic cells caused pneumonia. 
C) some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic. 
D) the polysaccharide coat of bacteria caused pneumonia. 
E) bacteriophages injected DNA into bacteria.

Question 4

Which of the enzymes covalently connects segments of DNA?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 5

Which of the following statements describes the eukaryotic chromosome?

Accepted Answer

A) It is composed of DNA alone. 
B) The nucleosome is its most basic functional subunit. 
C) The number of genes on each chromosome is different in different cell types of an organism. 
D) It consists of a single linear molecule of double-stranded DNA plus proteins. 
E) Active transcription occurs on heterochromatin but not euchromatin. 
A) It is composed of DNA alone. 
B) The nucleosome is its most basic functional subunit. 
C) The number of genes on each chromosome is different in different cell types of an organism. 
D) It consists of a single linear molecule of double-stranded DNA plus proteins. 
E) Active transcription occurs on heterochromatin but not euchromatin.

Question 6

Which enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction?

Accepted Answer

A) primase 
B) DNA ligase 
C) DNA polymerase III 
D) topoisomerase 
E) helicase 
A) primase 
B) DNA ligase 
C) DNA polymerase III 
D) topoisomerase 
E) helicase

Question 7

The elongation of the leading strand during DNA synthesis

Accepted Answer

A) progresses away from the replication fork. 
B) occurs in the 3' → 5' direction. 
C) produces Okazaki fragments. 
D) depends on the action of DNA polymerase. 
E) does not require a template strand. 
A) progresses away from the replication fork. 
B) occurs in the 3' → 5' direction. 
C) produces Okazaki fragments. 
D) depends on the action of DNA polymerase. 
E) does not require a template strand.

Exam 16: The Molecular Basis of Inheritance

Which of the following can be determined directly from X-ray diffraction photographs of crystallized DNA?

In an analysis of the nucleotide composition of DNA, which of the following will be found?

In his work with pneumonia-causing bacteria and mice, Griffith found that

Which of the enzymes covalently connects segments of DNA?

Which of the following statements describes the eukaryotic chromosome?

Which enzyme catalyzes the elongation of a DNA strand in the 5' → 3' direction?

The elongation of the leading strand during DNA synthesis

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

Dna Tools and Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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