Question 1

The three most common glycosaminoglycans (GAGs)are ________,________,and ________.

Accepted Answer

chondroitin sulfate; keratan sulfate; hyaluronate

Question 2

The primary function of each of the following is for adhesion of a cell to another cell or the extracellular matrix except

Accepted Answer

A) desmosomes. 
B) hemidesmosomes. 
C) plaques. 
D) connexins. 
E) cadherins. 
A) desmosomes. 
B) hemidesmosomes. 
C) plaques. 
D) connexins. 
E) cadherins. D

Question 3

The ________ serves as structural support in tissue organization and as a permeability barrier.

Accepted Answer

basal lamina

Question 4

Costameres,in which cytosolic actin filaments are linked to extracellular laminins through dystrophin-dystrogylcan complexes,are found in

Accepted Answer

A) skin cells. 
B) intestinal epithelial cells. 
C) striated muscle cells. 
D) nerve cells. 
E) pancreatic cells. 
A) skin cells. 
B) intestinal epithelial cells. 
C) striated muscle cells. 
D) nerve cells. 
E) pancreatic cells.

Question 5

Which of the following could you use experimentally to help you determine which carbohydrates are present on a cell's surface?

Accepted Answer

A) cadherins 
B) proteoglycans 
C) pectins 
D) connexins 
E) lectins 
A) cadherins 
B) proteoglycans 
C) pectins 
D) connexins 
E) lectins

Question 6

Which of the following aspects of collagen would be directly affected by a defect in procollagen peptidase?

Accepted Answer

A) synthesis 
B) secretion 
C) extracellular assembly 
D) binding to fibronectin 
E) all of the above 
A) synthesis 
B) secretion 
C) extracellular assembly 
D) binding to fibronectin 
E) all of the above

Question 7

You suspect that an elderly patient's skin blistering is caused by an autoimmune disorder.If you are correct,the patient's serum likely contains antibodies directed against

Accepted Answer

A) talin. 
B) vinculin. 
C) α-actinin. 
D) BPAG2. 
E) actin. 
A) talin. 
B) vinculin. 
C) α-actinin. 
D) BPAG2. 
E) actin.

Question 8

Which of the following pairs shares a similar function?

Accepted Answer

A) adhesive junction-tight junction 
B) desmotubule-gap junction 
C) tight junction-gap junction 
D) plaque-plasmodesma 
E) connexon-desmosome 
A) adhesive junction-tight junction 
B) desmotubule-gap junction 
C) tight junction-gap junction 
D) plaque-plasmodesma 
E) connexon-desmosome

Question 9

Each of the following is a good functional match between animal and plant extracellular structures or fibers except

Accepted Answer

A) elastins-extensins. 
B) extracellular matrix-cell wall. 
C) collagens-cellulose. 
D) proteoglycans-hemicelluloses. 
E) fibronectins-pectins. 
A) elastins-extensins. 
B) extracellular matrix-cell wall. 
C) collagens-cellulose. 
D) proteoglycans-hemicelluloses. 
E) fibronectins-pectins.

Question 10

________ are cytosolic channels through openings in plant cell walls.

Accepted Answer

The answer of ________ are cytosolic channels through openings in...

Question 11

Which of the following junctions is most abundant in tissues such as skin that are required to resist significant mechanical stress?

Accepted Answer

A) gap junctions 
B) desmosomes 
C) focal adhesions 
D) tight junctions 
E) All are abundant in tissues resisting stress. 
A) gap junctions 
B) desmosomes 
C) focal adhesions 
D) tight junctions 
E) All are abundant in tissues resisting stress.

Question 12

________ are Ca2+-dependent adhesive glycoproteins that function in animal cell-cell recognition and adhesion.

Accepted Answer

Question 13

________ are insoluble polymers of aromatic alcohols that primarily are found in woody tissues.

Accepted Answer

The answer of ________ are insoluble polymers of aromatic alcohols...

Question 14

Each of the following is a component of the plant cell wall network except

Accepted Answer

A) hyaluronate. 
B) cellulose. 
C) extensin. 
D) hemicellulose. 
E) pectin. 
A) hyaluronate. 
B) cellulose. 
C) extensin. 
D) hemicellulose. 
E) pectin.

Question 15

In animals,the extracellular matrix plays important roles in each of the following processes except

Accepted Answer

A) cell division. 
B) cell motility. 
C) DNA replication. 
D) cell differentiation. 
E) cell adhesion. 
A) cell division. 
B) cell motility. 
C) DNA replication. 
D) cell differentiation. 
E) cell adhesion.

Question 16

Collagens interact directly with which of the following types of junctions?

Accepted Answer

A) gap junctions 
B) tight junctions 
C) hemidesmosomes 
D) desmosomes 
E) None of the above are correct. 
A) gap junctions 
B) tight junctions 
C) hemidesmosomes 
D) desmosomes 
E) None of the above are correct.

Question 17

Elastin molecules are crosslinked to each other by

Accepted Answer

A) hydrogen bonds between hydroxylysines and hydroxyprolines. 
B) covalent bonds between lysines. 
C) covalent bonds between prolines. 
D) hydrophobic interactions between hydroxyprolines and glycines. 
E) peptide bonds between glycines. 
A) hydrogen bonds between hydroxylysines and hydroxyprolines. 
B) covalent bonds between lysines. 
C) covalent bonds between prolines. 
D) hydrophobic interactions between hydroxyprolines and glycines. 
E) peptide bonds between glycines.

Question 18

N-CAM mediates interactions between neural cells and is a member of which of the following protein families?

Accepted Answer

A) catenins 
B) cadherins 
C) selectins 
D) immunoglobulin superfamily (IgSF)proteins 
E) lectins 
A) catenins 
B) cadherins 
C) selectins 
D) immunoglobulin superfamily (IgSF)proteins 
E) lectins

Question 19

A major component of collagen is the amino acid ________,which is the only one small enough to fit in the interior of the collagen triple helix structure.

Accepted Answer

The answer of A major component of collagen is the...

Question 20

________ are the animal cell surface proteins that link the cytoskeleton to the extracellular matrix.

Accepted Answer

The answer of ________ are the animal cell surface proteins...

Exam 15: Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The three most common glycosaminoglycans (GAGs)are ________,________,and ________.

The primary function of each of the following is for adhesion of a cell to another cell or the extracellular matrix except

The ________ serves as structural support in tissue organization and as a permeability barrier.

Costameres,in which cytosolic actin filaments are linked to extracellular laminins through dystrophin-dystrogylcan complexes,are found in

Which of the following could you use experimentally to help you determine which carbohydrates are present on a cell's surface?

Which of the following aspects of collagen would be directly affected by a defect in procollagen peptidase?

You suspect that an elderly patient's skin blistering is caused by an autoimmune disorder.If you are correct,the patient's serum likely contains antibodies directed against

Which of the following pairs shares a similar function?

Each of the following is a good functional match between animal and plant extracellular structures or fibers except

________ are cytosolic channels through openings in plant cell walls.

Which of the following junctions is most abundant in tissues such as skin that are required to resist significant mechanical stress?

________ are Ca2+-dependent adhesive glycoproteins that function in animal cell-cell recognition and adhesion.

________ are insoluble polymers of aromatic alcohols that primarily are found in woody tissues.

Each of the following is a component of the plant cell wall network except

In animals,the extracellular matrix plays important roles in each of the following processes except

Collagens interact directly with which of the following types of junctions?

Elastin molecules are crosslinked to each other by

N-CAM mediates interactions between neural cells and is a member of which of the following protein families?

A major component of collagen is the amino acid ________,which is the only one small enough to fit in the interior of the collagen triple helix structure.

________ are the animal cell surface proteins that link the cytoskeleton to the extracellular matrix.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

The three most common glycosaminoglycans (GAGs)are ,,and .

________ are Ca²⁺-dependent adhesive glycoproteins that function in animal cell-cell recognition and adhesion.