Question 1

A steroid is characterized by the presence of three interconnected hydrocarbon rings.

Accepted Answer

A) True 
 B)False

Question 2

Only six elements make up 99 percent of the weight of all living matter.

Accepted Answer

A) True 
 B)False

Question 3

A fat differs from a phospholipid in that a fat contains:

Accepted Answer

A)  a phosphate group 
B)  1 glycerol 
C)  3 fatty acids 
D)  a steroid 
E)  a wax 
A)  a phosphate group 
B)  1 glycerol 
C)  3 fatty acids 
D)  a steroid 
E)  a wax

Question 4

The principal component of the cell walls of fungi is:

Accepted Answer

A)  cellulose. 
B)  chitin. 
C)  starch. 
D)  protein. 
E)  phospholipid. 
A)  cellulose. 
B)  chitin. 
C)  starch. 
D)  protein. 
E)  phospholipid.

Question 5

The monomers of proteins are:

Accepted Answer

A)  monosaccharides. 
B)  amino acids. 
C)  glycerol and fatty acids. 
D)  nucleotides. 
E)  fused hydrocarbon rings. 
A)  monosaccharides. 
B)  amino acids. 
C)  glycerol and fatty acids. 
D)  nucleotides. 
E)  fused hydrocarbon rings.

Question 6

Energy is released in the reaction in which a phosphate group is linked to ADP forming ATP.

Accepted Answer

A) True 
 B)False

Question 7

The matrix of the plant cell wall contains:

Accepted Answer

A)  microfibrils and pectins. 
B)  pectins and hemicelluloses. 
C)  hemicelluloses and oligosaccharins. 
D)  cellulose and chitin. 
E)  chitin and glycogen. 
A)  microfibrils and pectins. 
B)  pectins and hemicelluloses. 
C)  hemicelluloses and oligosaccharins. 
D)  cellulose and chitin. 
E)  chitin and glycogen.

Question 8

The common transport form of sugar in plants is ______ and in animals is ______.

Accepted Answer

A)  sucrose; glucose 
B)  glucose; sucrose 
C)  starch; sucrose 
D)  maltose; lactose 
E)  fructose; maltose 
A)  sucrose; glucose 
B)  glucose; sucrose 
C)  starch; sucrose 
D)  maltose; lactose 
E)  fructose; maltose

Question 9

The subunits of a nucleotide are a(n):

Accepted Answer

A)  five-carbon sugar and an amino acid. 
B)  amino acid, glycerol, and a fatty acid. 
C)  five-carbon sugar, a nitrogenous base, and a phosphate group. 
D)  nitrogenous base, an amino acid, and a monosaccharide. 
E)  phosphate group, a disaccharide, and a fatty acid. 
A)  five-carbon sugar and an amino acid. 
B)  amino acid, glycerol, and a fatty acid. 
C)  five-carbon sugar, a nitrogenous base, and a phosphate group. 
D)  nitrogenous base, an amino acid, and a monosaccharide. 
E)  phosphate group, a disaccharide, and a fatty acid.

Question 10

The main function of cutin and suberin is to:

Accepted Answer

A)  serve as structural components of cellular membranes. 
B)  prevent water loss. 
C)  catalyze chemical reactions. 
D)  provide strength to the cell wall. 
E)  serve as hormones. 
A)  serve as structural components of cellular membranes. 
B)  prevent water loss. 
C)  catalyze chemical reactions. 
D)  provide strength to the cell wall. 
E)  serve as hormones.

Exam 2: The Molecular Composition of Plant Cells

A steroid is characterized by the presence of three interconnected hydrocarbon rings.

Only six elements make up 99 percent of the weight of all living matter.

A fat differs from a phospholipid in that a fat contains:

The principal component of the cell walls of fungi is:

The monomers of proteins are:

Energy is released in the reaction in which a phosphate group is linked to ADP forming ATP.

The matrix of the plant cell wall contains:

The common transport form of sugar in plants is ______ and in animals is ______.

The subunits of a nucleotide are a(n):

The main function of cutin and suberin is to:

Botany: an Introduction

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

The Chemistry of Heredity and Gene Expression

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

The common transport form of sugar in plants is and in animals is .