Question 1

When the rate of DNA repair lags behind the rate of mutation,what is a possible fate of the cell?

Accepted Answer

A) The cell may transform into a cancerous cell. 
B) RNA may be used instead of DNA as inheritance material. 
C) The cell will become embryonic. 
D) DNA synthesis will continue by a new mechanism. 
E) The rate of mutation will be lower. 
A) The cell may transform into a cancerous cell. 
B) RNA may be used instead of DNA as inheritance material. 
C) The cell will become embryonic. 
D) DNA synthesis will continue by a new mechanism. 
E) The rate of mutation will be lower.

Question 2

Which of the following is most critical for the association between histones and DNA?

Accepted Answer

A) Histones are small proteins. 
B) Histones are highly conserved. 
C) There are at least five different types of histone proteins in every eukaryote. 
D) Histones are positively charged. 
E) Histones have hydrophobic patches on their surface. 
A) Histones are small proteins. 
B) Histones are highly conserved. 
C) There are at least five different types of histone proteins in every eukaryote. 
D) Histones are positively charged. 
E) Histones have hydrophobic patches on their surface.

Question 3

What is the function of topoisomerase?

Accepted Answer

A) relieving strain in the DNA ahead of the replication fork 
B) elongating new DNA at a replication fork by adding nucleotides to the existing chain 
C) adding methyl groups to bases of DNA 
D) unwinding of the double helix 
E) stabilizing single-stranded DNA at the replication fork 
A) relieving strain in the DNA ahead of the replication fork 
B) elongating new DNA at a replication fork by adding nucleotides to the existing chain 
C) adding methyl groups to bases of DNA 
D) unwinding of the double helix 
E) stabilizing single-stranded DNA at the replication fork

Question 4

The images above are of DNA at various levels of coiling and folding.Use this image to answer the questions below.
-Which image represents the smallest level of DNA visualization?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Exam 16: The Molecular Basis of Inheritance

When the rate of DNA repair lags behind the rate of mutation,what is a possible fate of the cell?

Which of the following is most critical for the association between histones and DNA?

What is the function of topoisomerase?

The images above are of DNA at various levels of coiling and folding.Use this image to answer the questions below. -Which image represents the smallest level of DNA visualization?

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

Filters