Question 1

Which of the following statements concerning actin filaments is FALSE?

Accepted Answer

A) They are composed of protein subunits. 
B) They lack distinct plus and minus ends. 
C) They are involved with cell wall deposition. 
D) They are involved with cytoplasmic streaming. 
E) They are also called micofilaments. 
A) They are composed of protein subunits. 
B) They lack distinct plus and minus ends. 
C) They are involved with cell wall deposition. 
D) They are involved with cytoplasmic streaming. 
E) They are also called micofilaments.

Question 2

The nucleolus is the structure in which ______ are formed.

Accepted Answer

A) nuclear pores 
B) chromosomes 
C) ribosomes 
D) units of endoplasmic reticulum 
E) portions of the nuclear envelope 
A) nuclear pores 
B) chromosomes 
C) ribosomes 
D) units of endoplasmic reticulum 
E) portions of the nuclear envelope

Question 3

The alignment of cellulose microfibrils in the cell wall is controlled by:

Accepted Answer

A) cortical microtubules. 
B) nuclear microtubules. 
C) cortical actin filaments. 
D) nuclear actin filaments. 
E) cell wall actin filaments. 
A) cortical microtubules. 
B) nuclear microtubules. 
C) cortical actin filaments. 
D) nuclear actin filaments. 
E) cell wall actin filaments.

Question 4

Cellulose synthase is an enzyme situated in the:

Accepted Answer

A) vacuole. 
B) chloroplasts. 
C) cell wall. 
D) mitochondria. 
E) plasma membrane. 
A) vacuole. 
B) chloroplasts. 
C) cell wall. 
D) mitochondria. 
E) plasma membrane.

Question 5

In late prophase, sister chromatids are joined by a constriction at the:

Accepted Answer

A) phragmosome. 
B) preprophase band. 
C) centriole. 
D) centromere. 
E) centrosome. 
A) phragmosome. 
B) preprophase band. 
C) centriole. 
D) centromere. 
E) centrosome.

Question 6

The ______ is the earliest manifestation of the mitotic spindle.

Accepted Answer

A) preprophase band 
B) prophase spindle 
C) phragmosome 
D) centrosome 
E) phragmoplast 
A) preprophase band 
B) prophase spindle 
C) phragmosome 
D) centrosome 
E) phragmoplast

Question 7

Once tubulin molecules are joined together they cannot un-join.

Accepted Answer

A) True 
 B)False

Question 8

In cells that enlarge in all directions more or less uniformly, microfibrils have been deposited perpendicular to the axis of elongation.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is unique to cell division in plants?

Accepted Answer

A) migration of the nucleus to the center of the cell 
B) migration of the mitochondria to the periphery of the cell 
C) duplication of the centrosome 
D) duplication of the mitochondria 
E) duplication of the endoplasmic reticulum 
A) migration of the nucleus to the center of the cell 
B) migration of the mitochondria to the periphery of the cell 
C) duplication of the centrosome 
D) duplication of the mitochondria 
E) duplication of the endoplasmic reticulum

Question 10

Smooth endoplasmic reticulum is involved in ______ synthesis.

Accepted Answer

A) protein 
B) glycoprotein 
C) lipid 
D) ribosome 
E) carbohydrate 
A) protein 
B) glycoprotein 
C) lipid 
D) ribosome 
E) carbohydrate

Question 11

In the cell cycle, interphase consists of:

Accepted Answer

A) mitosis and cytokinesis. 
B) mitosis and the S phase. 
C) the G1 and G2 phases. 
D) the G2 and S phases. 
E) the G1, G2, and S phases. 
A) mitosis and cytokinesis. 
B) mitosis and the S phase. 
C) the G1 and G2 phases. 
D) the G2 and S phases. 
E) the G1, G2, and S phases.

Question 12

The product of the cellulose synthase enzyme complex is released into the cytoplasm.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following statements about the primary wall is FALSE?

Accepted Answer

A) It is deposited before and during cell growth. 
B) It may contain lignin, suberin, or cutin. 
C) Actively dividing cells have only primary walls. 
D) Some mature plant cells have only a primary wall. 
E) It is usually of uniform thickness. 
A) It is deposited before and during cell growth. 
B) It may contain lignin, suberin, or cutin. 
C) Actively dividing cells have only primary walls. 
D) Some mature plant cells have only a primary wall. 
E) It is usually of uniform thickness.

Question 14

An interruption in the secondary wall is called a:

Accepted Answer

A) primary pit-field. 
B) pit membrane. 
C) pit. 
D) pit cavity. 
E) pit-pair. 
A) primary pit-field. 
B) pit membrane. 
C) pit. 
D) pit cavity. 
E) pit-pair.

Question 15

Anthocyanins are found in the vacuole.

Accepted Answer

A) True 
 B)False

Question 16

Sister chromatids become daughter chromosomes at the beginning of:

Accepted Answer

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

Question 17

A compound middle lamella may consist of the middle lamella, the two adjacent primary walls, and the first layer of the secondary wall of each cell.

Accepted Answer

A) True 
 B)False

Question 18

Flagella and cilia grow out of basal bodies.

Accepted Answer

A) True 
 B)False

Question 19

Chlorophylls and carotenoid pigments are embedded in the:

Accepted Answer

A) stroma. 
B) outer chloroplast membrane. 
C) thylakoid membranes. 
D) plasmalemma. 
E) nucleoids. 
A) stroma. 
B) outer chloroplast membrane. 
C) thylakoid membranes. 
D) plasmalemma. 
E) nucleoids.

Question 20

Which of the following lists the correct sequence of cell wall layers, beginning with the outermost layer and progressing inward?

Accepted Answer

A) middle lamella, primary wall, secondary wall 
B) secondary wall, primary wall, middle lamella 
C) secondary wall, middle lamella, primary wall 
D) primary wall, middle lamella, secondary wall 
E) middle lamella, secondary wall, primary wall 
A) middle lamella, primary wall, secondary wall 
B) secondary wall, primary wall, middle lamella 
C) secondary wall, middle lamella, primary wall 
D) primary wall, middle lamella, secondary wall 
E) middle lamella, secondary wall, primary wall

Exam 3: The Plant Cell and the Cell Cycle

Which of the following statements concerning actin filaments is FALSE?

The nucleolus is the structure in which ______ are formed.

The alignment of cellulose microfibrils in the cell wall is controlled by:

Cellulose synthase is an enzyme situated in the:

In late prophase, sister chromatids are joined by a constriction at the:

The ______ is the earliest manifestation of the mitotic spindle.

Once tubulin molecules are joined together they cannot un-join.

In cells that enlarge in all directions more or less uniformly, microfibrils have been deposited perpendicular to the axis of elongation.

Which of the following is unique to cell division in plants?

Smooth endoplasmic reticulum is involved in ______ synthesis.

In the cell cycle, interphase consists of:

The product of the cellulose synthase enzyme complex is released into the cytoplasm.

Which of the following statements about the primary wall is FALSE?

An interruption in the secondary wall is called a:

Anthocyanins are found in the vacuole.

Sister chromatids become daughter chromosomes at the beginning of:

A compound middle lamella may consist of the middle lamella, the two adjacent primary walls, and the first layer of the secondary wall of each cell.

Flagella and cilia grow out of basal bodies.

Chlorophylls and carotenoid pigments are embedded in the:

Which of the following lists the correct sequence of cell wall layers, beginning with the outermost layer and progressing inward?

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

Filters