Question 1

Amylose and amylopectin are the two forms of starch.

Accepted Answer

A) True 
 B)False

Question 2

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 3

The major classes of secondary plant metabolites are:

Accepted Answer

A) sugars and proteins. 
B) alkaloids and sugars. 
C) nucleic acids, alkaloids, and phenolics. 
D) terpenoids, phenolics, and proteins. 
E) alkaloids, phenolics, and terpenoids. 
A) sugars and proteins. 
B) alkaloids and sugars. 
C) nucleic acids, alkaloids, and phenolics. 
D) terpenoids, phenolics, and proteins. 
E) alkaloids, phenolics, and terpenoids.

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Pentoses and hexoses have a carbonyl group in the ring form but not the chain form.

Accepted Answer

A) True 
 B)False

Question 6

The largest group of plant phenolics are the:

Accepted Answer

A) tannins. 
B) cardiac glycosides. 
C) flavonoids. 
D) lignins. 
E) salicylic acids. 
A) tannins. 
B) cardiac glycosides. 
C) flavonoids. 
D) lignins. 
E) salicylic acids.

Question 7

Which comprise most of the middle lamella?

Accepted Answer

A) hemicelluloses 
B) pectins 
C) lipids 
D) chitins 
E) starches 
A) hemicelluloses 
B) pectins 
C) lipids 
D) chitins 
E) starches

Question 8

When a polypeptide undergoes hydrolysis, the products are:

Accepted Answer

A) glycerols and fatty acids 
B) amino acids 
C) monosaccharides 
D) nucleotides 
E) polysaccharides 
A) glycerols and fatty acids 
B) amino acids 
C) monosaccharides 
D) nucleotides 
E) polysaccharides

Question 9

The ______ structure of a protein involves interactions between two or more polypeptide chains.

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) pentenary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary 
E) pentenary

Question 10

The monomer of ___________ is N-acetylglucoseamine.

Accepted Answer

A) microfibrils 
B) enzymes 
C) storage polysaccharides 
D) chitin 
E) fats 
A) microfibrils 
B) enzymes 
C) storage polysaccharides 
D) chitin 
E) fats

Question 11

The tertiary structure of a protein is a result of all of the following EXCEPT:

Accepted Answer

A) the folding of the secondary structure. 
B) the linear sequence of amino acids. 
C) the formation of disulfide bridges. 
D) interactions among the R groups of a single polypeptide. 
E) interactions between two or more polypeptide chains. 
A) the folding of the secondary structure. 
B) the linear sequence of amino acids. 
C) the formation of disulfide bridges. 
D) interactions among the R groups of a single polypeptide. 
E) interactions between two or more polypeptide chains.

Question 12

______ is a secondary metabolite responsible for adding compressive strength, stiffness, and waterproofing to the plant cell wall.

Accepted Answer

A) Tannin 
B) Lignin 
C) Cellulose 
D) Flavone 
E) Flavonol 
A) Tannin 
B) Lignin 
C) Cellulose 
D) Flavone 
E) Flavonol

Question 13

Which of the following is characterized by the presence of four interconnected hydrocarbon rings?

Accepted Answer

A) steroids 
B) lignin 
C) epicuticular wax 
D) phospholipids 
E) triglycerides 
A) steroids 
B) lignin 
C) epicuticular wax 
D) phospholipids 
E) triglycerides

Question 14

The most water-repellant of the lipids are:

Accepted Answer

A) steroids 
B) waxes 
C) celluloses 
D) suberins 
E) cutins 
A) steroids 
B) waxes 
C) celluloses 
D) suberins 
E) cutins

Question 15

Which of the following secondary metabolites consists of isoprene units?

Accepted Answer

A) morphine 
B) atropine 
C) anthocyanin 
D) taxol 
E) salicylic acid 
A) morphine 
B) atropine 
C) anthocyanin 
D) taxol 
E) salicylic acid

Question 16

Which stabilize the cell wall by forming hydrogen bonds with it?

Accepted Answer

A) pectins 
B) starches 
C) chitins 
D) lipids 
E) hemicelluloses 
A) pectins 
B) starches 
C) chitins 
D) lipids 
E) hemicelluloses

Question 17

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 18

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 19

A peptide bond is a linkage between an amino group and a carboxyl group.

Accepted Answer

A) True 
 B)False

Question 20

The monomers of nucleic acids are:

Accepted Answer

A) DNA and RNA. 
B) nucleotides. 
C) ribose and deoxyribose. 
D) ATP and ADP. 
E) genes. 
A) DNA and RNA. 
B) nucleotides. 
C) ribose and deoxyribose. 
D) ATP and ADP. 
E) genes.

Exam 2: The Molecular Composition of Plant Cells

Amylose and amylopectin are the two forms of starch.

The principal component of the cell walls of fungi is:

The major classes of secondary plant metabolites are:

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

Pentoses and hexoses have a carbonyl group in the ring form but not the chain form.

The largest group of plant phenolics are the:

Which comprise most of the middle lamella?

When a polypeptide undergoes hydrolysis, the products are:

The ______ structure of a protein involves interactions between two or more polypeptide chains.

The monomer of ___________ is N-acetylglucoseamine.

The tertiary structure of a protein is a result of all of the following EXCEPT:

______ is a secondary metabolite responsible for adding compressive strength, stiffness, and waterproofing to the plant cell wall.

Which of the following is characterized by the presence of four interconnected hydrocarbon rings?

The most water-repellant of the lipids are:

Which of the following secondary metabolites consists of isoprene units?

Which stabilize the cell wall by forming hydrogen bonds with it?

The matrix of the plant cell wall contains:

The monomers of proteins are:

A peptide bond is a linkage between an amino group and a carboxyl group.

The monomers of nucleic acids are:

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

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