Question 1

This forms a seal that prevents the movement of substances between cells, for instance from the intestinal lumen into the blood.

Accepted Answer

A)  gap junctions 
B)  tight junctions 
C)  desmosomes 
D)  hemidesmosomes 
E)  focal adhesions 
A)  gap junctions 
B)  tight junctions 
C)  desmosomes 
D)  hemidesmosomes 
E)  focal adhesions B

Question 2

The epithelial tissue of animal cells is most similar to the ________ of plant cells?

Accepted Answer

A)  xylem 
B)  vascular 
C)  dermal 
D)  ground 
E)  phloem 
A)  xylem 
B)  vascular 
C)  dermal 
D)  ground 
E)  phloem C

Question 3

All of the following statements about cellulose are true EXCEPT:

Accepted Answer

A)  Cellulose is composed of fibers of carbohydrates. 
B)  Cellulose is an important source of plant fiber for our diet. 
C)  Cellulose is the primary molecule found in wood. 
D)  Cellulose is one of the most abundant organic molecules on Earth. 
E)  Certain animals like ourselves can easily digest cellulose and use it as a source of energy. 
A)  Cellulose is composed of fibers of carbohydrates. 
B)  Cellulose is an important source of plant fiber for our diet. 
C)  Cellulose is the primary molecule found in wood. 
D)  Cellulose is one of the most abundant organic molecules on Earth. 
E)  Certain animals like ourselves can easily digest cellulose and use it as a source of energy. A

Question 4

The major macromolecules of the ECM are polysaccharides and

Accepted Answer

A)  lipids. 
B)  fat. 
C)  proteins. 
D)  nucleotides. 
E)  amino acids. 
A)  lipids. 
B)  fat. 
C)  proteins. 
D)  nucleotides. 
E)  amino acids.

Question 5

Which of the following statements about collagen is INCORRECT?

Accepted Answer

A)  There can be numerous types of collagen in multicellular organisms 
B)  It is produced from polymers of amino acids. 
C)  It tends to promote the "sticky" characteristics of the ECM. 
D)  Its breakdown is a contributing characteristic of wrinkling during aging. 
E)  It is a major component of the ECM for cartilage and bone. 
A)  There can be numerous types of collagen in multicellular organisms 
B)  It is produced from polymers of amino acids. 
C)  It tends to promote the "sticky" characteristics of the ECM. 
D)  Its breakdown is a contributing characteristic of wrinkling during aging. 
E)  It is a major component of the ECM for cartilage and bone.

Question 6

The most prominent tissue type present in plants is the dermis.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is NOT a component of focal adhesions?

Accepted Answer

A)  cadherins 
B)  integrins 
C)  actin filaments 
D)  linker protein 
E)  fibronectin/collagen 
A)  cadherins 
B)  integrins 
C)  actin filaments 
D)  linker protein 
E)  fibronectin/collagen

Question 8

Which of the following ECM molecules is probably the most abundant organic molecule on Earth?

Accepted Answer

A)  proteoglycans 
B)  collagen 
C)  chitin 
D)  cellulose 
E)  laminins 
A)  proteoglycans 
B)  collagen 
C)  chitin 
D)  cellulose 
E)  laminins

Question 9

All of the following represent anchoring junctions EXCEPT

Accepted Answer

A)  tight junctions. 
B)  focal adhesions. 
C)  hemidesmosomes. 
D)  desmosomes. 
E)  adherens junctions. 
A)  tight junctions. 
B)  focal adhesions. 
C)  hemidesmosomes. 
D)  desmosomes. 
E)  adherens junctions.

Question 10

The heart is a(n) ________ composed mainly of ________ tissue?

Accepted Answer

A)  tissue, cardiac 
B)  organ, muscle 
C)  tissue, connective 
D)  organ, connective 
E)  organ, epithelial 
A)  tissue, cardiac 
B)  organ, muscle 
C)  tissue, connective 
D)  organ, connective 
E)  organ, epithelial

Question 11

Which of the cell adhesion molecules is critical to transducing changes in the ECM to a change in the cell?

Accepted Answer

A)  connexins 
B)  cadherins 
C)  integrins 
D)  fibronectins 
E)  claudins 
A)  connexins 
B)  cadherins 
C)  integrins 
D)  fibronectins 
E)  claudins

Question 12

Which type of tissue constitutes most of the wood of a tree trunk?

Accepted Answer

A)  dermal tissue 
B)  parenchyma tissue 
C)  collenchyma tissue 
D)  sclerenchyma tissue 
E)  vascular tissue 
A)  dermal tissue 
B)  parenchyma tissue 
C)  collenchyma tissue 
D)  sclerenchyma tissue 
E)  vascular tissue

Question 13

Gap junctions are to animal cells as ________ are to plant cells?

Accepted Answer

A)  middle lamella 
B)  hemidesmosomes 
C)  plasmodesmata 
D)  primary cell walls 
E)  tight junctions 
A)  middle lamella 
B)  hemidesmosomes 
C)  plasmodesmata 
D)  primary cell walls 
E)  tight junctions

Question 14

Wrinkling observed with aging is do to low production of the extracellular matrix molecule, fibronectin.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is NOT a function of cellular junctions?

Accepted Answer

A)  Cellular junctions hold adjacent cells together. 
B)  Cellular junctions prevent leakage of materials between cell layers. 
C)  Cellular junctions permit the direct exchange of small molecules between cytosol of adjacent cells. 
D)  Cellular junctions bond cells to their ECM. 
E)  Cellular junctions promote the motility of adjacent cells. 
A)  Cellular junctions hold adjacent cells together. 
B)  Cellular junctions prevent leakage of materials between cell layers. 
C)  Cellular junctions permit the direct exchange of small molecules between cytosol of adjacent cells. 
D)  Cellular junctions bond cells to their ECM. 
E)  Cellular junctions promote the motility of adjacent cells.

Question 16

Which of the following junctions are important for cell signaling?

Accepted Answer

A)  adherins junctions 
B)  gap junctions 
C)  plasmodesmata 
D)  desmosomes 
E)  All of the choices are correct. 
A)  adherins junctions 
B)  gap junctions 
C)  plasmodesmata 
D)  desmosomes 
E)  All of the choices are correct.

Question 17

Which of the following is most TRUE about multicellular organisms when compared with unicellular organisms?

Accepted Answer

A)  Multicellular organisms carry out specialized functions, while unicellular organisms do not. 
B)  Multicellular organisms can reproduce themselves, while unicellular organisms cannot. 
C)  Multicellular organisms can digest more complex molecules than unicellular organisms. 
D)  Multicellular organisms tend to have larger genomes than unicellular organisms. 
E)  Multicellular organisms show development while unicellular organisms do not. 
A)  Multicellular organisms carry out specialized functions, while unicellular organisms do not. 
B)  Multicellular organisms can reproduce themselves, while unicellular organisms cannot. 
C)  Multicellular organisms can digest more complex molecules than unicellular organisms. 
D)  Multicellular organisms tend to have larger genomes than unicellular organisms. 
E)  Multicellular organisms show development while unicellular organisms do not.

Question 18

What structure cements plant cells together?

Accepted Answer

A)  middle lamella 
B)  hemidesmosomes 
C)  plasmodesmata 
D)  primary cell walls 
E)  adherens junctions 
A)  middle lamella 
B)  hemidesmosomes 
C)  plasmodesmata 
D)  primary cell walls 
E)  adherens junctions

Question 19

Which of the following is NOT a function of the extracellular matrix?

Accepted Answer

A)  provides strength 
B)  provides structural support 
C)  provides organization of cells throughout the organism 
D)  provides an important source of energy for the organism 
E)  cell signaling 
A)  provides strength 
B)  provides structural support 
C)  provides organization of cells throughout the organism 
D)  provides an important source of energy for the organism 
E)  cell signaling

Question 20

Which of the following ECM molecules provides tensile strength?

Accepted Answer

A)  fibronectin 
B)  collagen 
C)  laminin 
D)  elastin 
E)  proteoglycan 
A)  fibronectin 
B)  collagen 
C)  laminin 
D)  elastin 
E)  proteoglycan

Exam 10: Multicellularity

This forms a seal that prevents the movement of substances between cells, for instance from the intestinal lumen into the blood.

The epithelial tissue of animal cells is most similar to the ________ of plant cells?

All of the following statements about cellulose are true EXCEPT:

The major macromolecules of the ECM are polysaccharides and

Which of the following statements about collagen is INCORRECT?

The most prominent tissue type present in plants is the dermis.

Which of the following is NOT a component of focal adhesions?

Which of the following ECM molecules is probably the most abundant organic molecule on Earth?

All of the following represent anchoring junctions EXCEPT

The heart is a(n) ________ composed mainly of ________ tissue?

Which of the cell adhesion molecules is critical to transducing changes in the ECM to a change in the cell?

Which type of tissue constitutes most of the wood of a tree trunk?

Gap junctions are to animal cells as ________ are to plant cells?

Wrinkling observed with aging is do to low production of the extracellular matrix molecule, fibronectin.

Which of the following is NOT a function of cellular junctions?

Which of the following junctions are important for cell signaling?

Which of the following is most TRUE about multicellular organisms when compared with unicellular organisms?

What structure cements plant cells together?

Which of the following is NOT a function of the extracellular matrix?

Which of the following ECM molecules provides tensile strength?

An Introduction to Biology

The Chemical Basis of Life I: Atoms, Molecules, and Water

The Chemical Basis of Life II: Organic Molecules

General Features of Cells

Membrane Structure, Synthesis, and Transport

An Introduction to Energy, Enzymes, and Metabolism

Cellular Respiration, Fermentation, and Secondary Metabolism

Photosynthesis

Cell Communication

Nucleic Acid Structure, DNA Replication, and Chromosome Structure

Gene Expression at the Molecular Level

Gene Regulation

Mutation, DNA Repair, and Cancer

The Eukaryotic Cell Cycle, Mitosis, and Meiosis

Simple Patterns of Inheritance

Complex Patterns of Inheritance

Genetics of Viruses and Bacteria

Developmental Genetics

Genetic Technology

Genomes, Proteomes, and Bioinformatics

The Origin and History of Life

An Introduction to Evolution

Population Genetics

Origin of Species and Macroevolution

Taxonomy and Systematics

Bacteria and Archaea

Protists

Plants and the Conquest of Land

The Evolution and Diversity of Modern Gymnosperms and Angiosperms

Fungi

An Introduction to Animal Diversity

The Invertebrates

The Vertebrates

An Introduction to Flowering Plant Form and Function

Flowering Plants: Behavior

Flowering Plants: Nutrition

Flowering Plants: Transport

Flowering Plants: Reproduction

Introduction to Animal Form and Function

Neuroscience I: Cells of the Nervous System

Neuroscience Ii: Evolution and Function of the Brain and Nervous Systems

Neuroscience Iii: Sensory Systems

The Muscular-Skeletal System and Locomotion

Nutrition, Digestion, and Absorption

Control of Energy Balance, Metabolic Rate, and Body Temperature

Circulatory Systems

Respiratory Systems

Excretory Systems and Salt and Water Balance

Endocrine Systems

Animal Reproduction

Animal Development

Immune Systems

An Introduction to Ecology and Biomes

Behavioral Ecology

Population Ecology

Species Interactions

Community Ecology

Ecosystems Ecology

Biodiversity and Conservation Biology

The heart is a(n) composed mainly of tissue?