Question 1

When scientists describe the genetic code as redundant, they mean that:

Accepted Answer

A)  it becomes disorganized over time. 
B)  many amino acids have more than one codon. 
C)  some codons specify stop signals. 
D)  it varies with cell type. 
E)  it varies among species. 
A)  it becomes disorganized over time. 
B)  many amino acids have more than one codon. 
C)  some codons specify stop signals. 
D)  it varies with cell type. 
E)  it varies among species.

Question 2

The pyrimidine bases of DNA are:

Accepted Answer

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

Question 3

Heterochromatin is more tightly condensed than euchromatin and in some regions is never transcribed.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following events is NOT part of the termination stage of translation?

Accepted Answer

A)  The ribosome encounters a stop codon. 
B)  Release factors bind at the A site. 
C)  The ribosome moves along the mRNA to the next codon. 
D)  The ribosomal subunits separate. 
E)  The polypeptide chain is released. 
A)  The ribosome encounters a stop codon. 
B)  Release factors bind at the A site. 
C)  The ribosome moves along the mRNA to the next codon. 
D)  The ribosomal subunits separate. 
E)  The polypeptide chain is released.

When scientists describe the genetic code as redundant, they mean that:

The pyrimidine bases of DNA are:

Heterochromatin is more tightly condensed than euchromatin and in some regions is never transcribed.

Which of the following events is NOT part of the termination stage of translation?

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

Exam 9: The Chemistry of Heredity and Gene Expression

When scientists describe the genetic code as redundant, they mean that:

The pyrimidine bases of DNA are:

Heterochromatin is more tightly condensed than euchromatin and in some regions is never transcribed.

Which of the following events is NOT part of the termination stage of translation?

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters