Question 1

A protein destined for secretion at the cell surface is packaged at the trans-Golgi network into coated vesicles rather than smooth-surfaced vesicles.

Accepted Answer

A) True 
 B)False  False

Question 2

Which of the following statements about mitochondria is FALSE?

Accepted Answer

A) They are sites where energy is released from organic molecules. 
B) They are generally larger than plastids. 
C) They can synthesize some of their own proteins. 
D) Their DNA is circular. 
E) They are bounded by two membranes. 
A) They are sites where energy is released from organic molecules. 
B) They are generally larger than plastids. 
C) They can synthesize some of their own proteins. 
D) Their DNA is circular. 
E) They are bounded by two membranes. B

Question 3

Which of the following statements about microtubules is FALSE?

Accepted Answer

A) They are components of the cytoskeleton. 
B) Their subunits are assembled at microtubule organizing centers. 
C) Their subunits are arranged in a solid cylinder. 
D) They are polar structures, with plus and minus ends. 
E) They exhibit dynamic instability. 
A) They are components of the cytoskeleton. 
B) Their subunits are assembled at microtubule organizing centers. 
C) Their subunits are arranged in a solid cylinder. 
D) They are polar structures, with plus and minus ends. 
E) They exhibit dynamic instability. C

Question 4

Which of the following is NOT part of the endomembrane system?

Accepted Answer

A) tonoplast 
B) mitochondrial membrane 
C) plasma membrane 
D) Golgi complex 
E) nuclear envelope 
A) tonoplast 
B) mitochondrial membrane 
C) plasma membrane 
D) Golgi complex 
E) nuclear envelope

Question 5

Eukaryotic cells differ from prokaryotic cells in that eukaryotic cells have:

Accepted Answer

A) a nucleus. 
B) a cytoplasm. 
C) a plasma membrane. 
D) genetic material. 
E) ribosomes. 
A) a nucleus. 
B) a cytoplasm. 
C) a plasma membrane. 
D) genetic material. 
E) ribosomes.

Question 6

Chromosomes lengthen and become indistinct during:

Accepted Answer

A) anaphase. 
B) metaphase. 
C) prophase. 
D) interphase. 
E) telophase. 
A) anaphase. 
B) metaphase. 
C) prophase. 
D) interphase. 
E) telophase.

Question 7

An expansin is a protein found in the cell wall.

Accepted Answer

A) True 
 B)False

Question 8

The membrane of a vacuole is called the tonoplast.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements concerning callose is FALSE?

Accepted Answer

A) It is deposited in response to mechanical wounding. 
B) It is associated with aspects of cell division. 
C) It consists of spirally wound chains. 
D) It is composed of glucose residues. 
E) It opens plasmodesmata between contiguous cells. 
A) It is deposited in response to mechanical wounding. 
B) It is associated with aspects of cell division. 
C) It consists of spirally wound chains. 
D) It is composed of glucose residues. 
E) It opens plasmodesmata between contiguous cells.

Question 10

Proplastids that contain prolamellar bodies are called etioplasts.

Accepted Answer

A) True 
 B)False

Question 11

Cyclosis refers to:

Accepted Answer

A) the constant streaming of the cytoplasm. 
B) the process of cell division. 
C) that portion of the cytoplasm outside the plasma membrane. 
D) that portion of the cytoplasm inside the plasma membrane. 
E) the liquid inside the vacuole. 
A) the constant streaming of the cytoplasm. 
B) the process of cell division. 
C) that portion of the cytoplasm outside the plasma membrane. 
D) that portion of the cytoplasm inside the plasma membrane. 
E) the liquid inside the vacuole.

Question 12

______ are colorless plastids that are the precursors of other, more highly differentiated plastids.

Accepted Answer

A) Leucoplasts 
B) Chromoplasts 
C) Amyloplasts 
D) Proplastids 
E) Chloroplasts 
A) Leucoplasts 
B) Chromoplasts 
C) Amyloplasts 
D) Proplastids 
E) Chloroplasts

Question 13

During ______, the nuclear envelopes and nucleoli re-form.

Accepted Answer

A) anaphase 
B) metaphase 
C) prophase 
D) interphase 
E) telophase 
A) anaphase 
B) metaphase 
C) prophase 
D) interphase 
E) telophase

Question 14

The cytoskeleton of plant cells consists of microtubules, actin filaments, and, in some cases, intermediate filaments.

Accepted Answer

A) True 
 B)False

Question 15

If a plant has 50 chromosomes in each of its somatic cells, then each of its gametes will have 25 chromosomes.

Accepted Answer

A) True 
 B)False

Question 16

In plants, flagella are found only in:

Accepted Answer

A) leaves. 
B) phloem. 
C) xylem. 
D) mosses. 
E) motile sperm. 
A) leaves. 
B) phloem. 
C) xylem. 
D) mosses. 
E) motile sperm.

Question 17

Micelles are composed of cellulose.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following statements concerning checkpoints is FALSE?

Accepted Answer

A) Checkpoints control the progression between certain phases of the cell cycle. 
B) Checkpoints control the rate at which cells are produced. 
C) Checkpoints enable a cell to sense whether certain conditions have been met. 
D) Checkpoints involve the control of DNA and protein synthesis. 
E) Checkpoints differ significantly among eukaryotic cells. 
A) Checkpoints control the progression between certain phases of the cell cycle. 
B) Checkpoints control the rate at which cells are produced. 
C) Checkpoints enable a cell to sense whether certain conditions have been met. 
D) Checkpoints involve the control of DNA and protein synthesis. 
E) Checkpoints differ significantly among eukaryotic cells.

Question 19

Which of the following statements about the phragmoplast is FALSE?

Accepted Answer

A) It forms between the two daughter nuclei. 
B) It is composed of microtubules. 
C) Its formation precedes the growth of the cell plate. 
D) It begins to form at the walls of the dividing cell and grows inward. 
E) In cells with large vacuoles, it is formed within the phragmosome. 
A) It forms between the two daughter nuclei. 
B) It is composed of microtubules. 
C) Its formation precedes the growth of the cell plate. 
D) It begins to form at the walls of the dividing cell and grows inward. 
E) In cells with large vacuoles, it is formed within the phragmosome.

Question 20

The largest supramolecular complex assembled in the eukaryotic cell is the nuclear pore.

Accepted Answer

A) True 
 B)False

Exam 3: The Plant Cell and the Cell Cycle

A protein destined for secretion at the cell surface is packaged at the trans-Golgi network into coated vesicles rather than smooth-surfaced vesicles.

Which of the following statements about mitochondria is FALSE?

Which of the following statements about microtubules is FALSE?

Which of the following is NOT part of the endomembrane system?

Eukaryotic cells differ from prokaryotic cells in that eukaryotic cells have:

Chromosomes lengthen and become indistinct during:

An expansin is a protein found in the cell wall.

The membrane of a vacuole is called the tonoplast.

Which of the following statements concerning callose is FALSE?

Proplastids that contain prolamellar bodies are called etioplasts.

Cyclosis refers to:

______ are colorless plastids that are the precursors of other, more highly differentiated plastids.

During ______, the nuclear envelopes and nucleoli re-form.

The cytoskeleton of plant cells consists of microtubules, actin filaments, and, in some cases, intermediate filaments.

If a plant has 50 chromosomes in each of its somatic cells, then each of its gametes will have 25 chromosomes.

In plants, flagella are found only in:

Micelles are composed of cellulose.

Which of the following statements concerning checkpoints is FALSE?

Which of the following statements about the phragmoplast is FALSE?

The largest supramolecular complex assembled in the eukaryotic cell is the nuclear pore.

Botany: an Introduction

The Molecular Composition of Plant Cells

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

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