Question 1

Free ________ molecules have lubricating properties and are therefore abundant in the joints,for example.

Accepted Answer

The answer of Free ________ molecules have lubricating properties and...

Question 2

Which of the following is mismatched?

Accepted Answer

A) IgSF[emdash]chondroitin 
B) cadherinscalcium ions 
C) selectinsleukocytes 
D) cadherinsembryonic development 
E) lectinscarbohydrates 
A) IgSF[emdash]chondroitin 
B) cadherinscalcium ions 
C) selectinsleukocytes 
D) cadherinsembryonic development 
E) lectinscarbohydrates

Question 3

________ indirectly link the extracellular matrix and the cytoskeleton of animal cells.

Accepted Answer

The answer of ________ indirectly link the extracellular matrix and...

Question 4

Which of the following is false with regard to the extracellular matrix?

Accepted Answer

A) These structures are external to the cell membrane, but are still an integral component of cell function. 
B) Extracellular matrices are only found in association with eukaryotic cells. 
C) Extracellular matrices play a role in determining the shape of a cell. 
D) Bone and cartilage are examples of cells that have specialized extracellular matrices associated with their function. 
E) Extracellular matrices play a role in determining the mechanical properties of tissues and organs. 
A) These structures are external to the cell membrane, but are still an integral component of cell function. 
B) Extracellular matrices are only found in association with eukaryotic cells. 
C) Extracellular matrices play a role in determining the shape of a cell. 
D) Bone and cartilage are examples of cells that have specialized extracellular matrices associated with their function. 
E) Extracellular matrices play a role in determining the mechanical properties of tissues and organs.

Question 5

A(n)________ is the ring of cytoplasm lining the plasmodesmata.

Accepted Answer

The answer of A(n)________ is the ring of cytoplasm lining...

Question 6

Polarized cells are characterized by

Accepted Answer

A) random orientation within a tissue. 
B) a polar flagellum. 
C) random orientation within an organ. 
D) distinct apical and basolateral sides. 
E) both choices B and D 
A) random orientation within a tissue. 
B) a polar flagellum. 
C) random orientation within an organ. 
D) distinct apical and basolateral sides. 
E) both choices B and D

Question 7

Which of the following components is not associated with the primary cell wall?

Accepted Answer

A) cellulose microfibrils 
B) hemicelluloses 
C) pectins 
D) glycoproteins 
E) lignins 
A) cellulose microfibrils 
B) hemicelluloses 
C) pectins 
D) glycoproteins 
E) lignins

Question 8

A patient is rushed to the emergency room and immediately needs a blood transfusion.The patient is found to have only anti-A antibodies in circulation.The blood type of this individual must be

Accepted Answer

A) A. 
B) B. 
C) AB. 
D) O. 
A) A. 
B) B. 
C) AB. 
D) O.

Question 9

The insoluble layer of aromatic alcohols that are primarily found in woody tissues are the

Accepted Answer

A) annulus. 
B) cadherins. 
C) proteoglycans. 
D) lignins. 
E) pectins. 
A) annulus. 
B) cadherins. 
C) proteoglycans. 
D) lignins. 
E) pectins.

Question 10

The autoimmune response to desmosomes or desmosomal components (not hemidesmosomes)leads to a blistering skin disease known as

Accepted Answer

A) pemphigus. 
B) EhlersDanos syndrome. 
C) syndecan. 
D) junctional epidermolysis bullosa. 
E) listeriosis. 
A) pemphigus. 
B) EhlersDanos syndrome. 
C) syndecan. 
D) junctional epidermolysis bullosa. 
E) listeriosis.

Question 11

A collection of fibrous intracellular attachment proteins is called a(n)

Accepted Answer

A) annulus. 
B) connexon. 
C) plaque. 
D) tonofilament. 
E) both choices C and D 
A) annulus. 
B) connexon. 
C) plaque. 
D) tonofilament. 
E) both choices C and D

Question 12

________ are cytoplasmic channels through openings in plant cell walls.

Accepted Answer

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

Question 13

You are investigating the transmission of a particular cellular response in cultured cardiac cells.You suspect that there is some sort of cell-cell communication associated with this response because when you use extremely small doses of ligand (approximately 10 molecules of ligand in the dilution)you can stimulate profound responses from the cultured cells.Based on your knowledge of the responses,you suspect that calcium ions are involved and that signals for cytoplasmic release of the calcium ions are being transmitted from cell to cell via gap junctions.No factors such as hormones have been detected.Experimentally,how could you test your hypothesis?

Accepted Answer

The students have a great deal of leeway

Question 14

The molecule of the extracellular matrix of animal cells that is associated with joint lubrication and friction reduction is

Accepted Answer

A) glycosaminoglycan. 
B) proteoglycan. 
C) hyaluronate. 
D) pectin. 
E) fibronectin. 
A) glycosaminoglycan. 
B) proteoglycan. 
C) hyaluronate. 
D) pectin. 
E) fibronectin.

Question 15

Focal contact is associated with which of the following type of cellular junction?

Accepted Answer

A) adhesive junction 
B) gap junction 
C) plasmodesmata 
D) tight junctions 
E) all of the above 
A) adhesive junction 
B) gap junction 
C) plasmodesmata 
D) tight junctions 
E) all of the above

Question 16

You have recently obtained a job with the Centers for Disease Control and Prevention (CDC).Epidemiologists you work with have noted an unusual disease outbreak in Kenya that appears to be spread though the water.A sample has been sent to you to investigate how this microorganism interacts with the cells of the digestive system in order to invade the host.Describe how you would go about looking at cell surface proteins as a possible means of entry for this microorganism.

Accepted Answer

The students have a great deal

Question 17

Collagens are associated with which of the following types of cellular junctions?

Accepted Answer

A) gap junctions 
B) tight junctions 
C) plasmodesmata 
D) adhesive junctions 
E) none of the above 
A) gap junctions 
B) tight junctions 
C) plasmodesmata 
D) adhesive junctions 
E) none of the above

Question 18

________ are the polysaccharide portion of some protein glycans,which are characterized by repeating disaccharide units.

Accepted Answer

Glycoamino

Question 19

A person with neither anti-A nor anti-B antibodies in circulation has which of blood type?

Accepted Answer

A) A 
B) B 
C) AB 
D) O 
A) A 
B) B 
C) AB 
D) O

Question 20

Paracellular transport is associated with which of the following?

Accepted Answer

A) adherens junctions 
B) integrins 
C) desmosomes 
D) tight junctions 
E) hemidesmosomes 
A) adherens junctions 
B) integrins 
C) desmosomes 
D) tight junctions 
E) hemidesmosomes

Exam 17: Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

Free ________ molecules have lubricating properties and are therefore abundant in the joints,for example.

Which of the following is mismatched?

________ indirectly link the extracellular matrix and the cytoskeleton of animal cells.

Which of the following is false with regard to the extracellular matrix?

A(n)________ is the ring of cytoplasm lining the plasmodesmata.

Polarized cells are characterized by

Which of the following components is not associated with the primary cell wall?

A patient is rushed to the emergency room and immediately needs a blood transfusion.The patient is found to have only anti-A antibodies in circulation.The blood type of this individual must be

The insoluble layer of aromatic alcohols that are primarily found in woody tissues are the

The autoimmune response to desmosomes or desmosomal components (not hemidesmosomes)leads to a blistering skin disease known as

A collection of fibrous intracellular attachment proteins is called a(n)

________ are cytoplasmic channels through openings in plant cell walls.

The molecule of the extracellular matrix of animal cells that is associated with joint lubrication and friction reduction is

Focal contact is associated with which of the following type of cellular junction?

Collagens are associated with which of the following types of cellular junctions?

________ are the polysaccharide portion of some protein glycans,which are characterized by repeating disaccharide units.

A person with neither anti-A nor anti-B antibodies in circulation has which of blood type?

Paracellular transport is associated with which of the following?

A Preview of the Cell

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 and Peroxisomes

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

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

The Cell Cycle, DNA Replication, and Mitosis

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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