Question 1

Most membrane carbohydrates are present in the form of:

Accepted Answer

A)  glycoproteins. 
B)  lectins. 
C)  individual glucose molecules. 
D)  starch. 
E)  disaccharides. 
A)  glycoproteins. 
B)  lectins. 
C)  individual glucose molecules. 
D)  starch. 
E)  disaccharides.

Question 2

When a leaf wilts, the leaf cells most likely have already plasmolyzed.

Accepted Answer

A) True 
 B)False

Question 3

The symplast consists of:

Accepted Answer

A)  the cell wall continuum. 
B)  all the plasma membranes. 
C)  all the desmotubules. 
D)  all the protoplasts but not their plasmodesmata. 
E)  all the protoplasts including their plasmodesmata. 
A)  the cell wall continuum. 
B)  all the plasma membranes. 
C)  all the desmotubules. 
D)  all the protoplasts but not their plasmodesmata. 
E)  all the protoplasts including their plasmodesmata.

Question 4

Which of the following statements concerning membrane structure is FALSE?

Accepted Answer

A)  Some proteins are firmly anchored in place. 
B)  Some proteins move laterally within the membrane. 
C)  Some lipids move laterally within the membrane. 
D)  Transmembrane proteins lack hydrophilic sequences. 
E)  Peripheral proteins lack hydrophobic sequences. 
A)  Some proteins are firmly anchored in place. 
B)  Some proteins move laterally within the membrane. 
C)  Some lipids move laterally within the membrane. 
D)  Transmembrane proteins lack hydrophilic sequences. 
E)  Peripheral proteins lack hydrophobic sequences.

Question 5

Cholesterol is the major sterol in the plasma membrane of plant cells.

Accepted Answer

A) True 
 B)False

Question 6

When botanists speak of a "bilayer," they are referring to a structure composed entirely of:

Accepted Answer

A)  carbohydrates. 
B)  integral proteins. 
C)  lectins. 
D)  sterols. 
E)  phospholipids. 
A)  carbohydrates. 
B)  integral proteins. 
C)  lectins. 
D)  sterols. 
E)  phospholipids.

Question 7

Proteins and polysaccharides will most likely enter a cell by:

Accepted Answer

A)  active transport. 
B)  osmosis. 
C)  facilitated diffusion. 
D)  vesicle-mediated transport. 
E)  simple diffusion. 
A)  active transport. 
B)  osmosis. 
C)  facilitated diffusion. 
D)  vesicle-mediated transport. 
E)  simple diffusion.

Question 8

Small nonpolar molecules, such as O2 and CO2, enter a cell by:

Accepted Answer

A)  active transport. 
B)  osmosis. 
C)  facilitated diffusion. 
D)  vesicle-mediated transport. 
E)  simple diffusion. 
A)  active transport. 
B)  osmosis. 
C)  facilitated diffusion. 
D)  vesicle-mediated transport. 
E)  simple diffusion.

Most membrane carbohydrates are present in the form of:

When a leaf wilts, the leaf cells most likely have already plasmolyzed.

The symplast consists of:

Which of the following statements concerning membrane structure is FALSE?

Cholesterol is the major sterol in the plasma membrane of plant cells.

When botanists speak of a "bilayer," they are referring to a structure composed entirely of:

Proteins and polysaccharides will most likely enter a cell by:

Small nonpolar molecules, such as O₂ and CO₂, enter a cell by:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

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

Exam 4: The Movement of Substances Into and Out of Cells

Most membrane carbohydrates are present in the form of:

When a leaf wilts, the leaf cells most likely have already plasmolyzed.

The symplast consists of:

Which of the following statements concerning membrane structure is FALSE?

Cholesterol is the major sterol in the plasma membrane of plant cells.

When botanists speak of a "bilayer," they are referring to a structure composed entirely of:

Proteins and polysaccharides will most likely enter a cell by:

Small nonpolar molecules, such as O2 and CO2, enter a cell by:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

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

Small nonpolar molecules, such as O₂ and CO₂, enter a cell by: