Question 1

provide motility to a cell, act as sensory "antenna" in many cells, and increase a cell's surface area.

Accepted Answer

A)  Cilia; microvilli; flagella
B)  Microvilli; cilia; flagella
C)  Microvilli; flagella; cilia
D)  Flagella; microvilli; cilia
E)  Flagella; cilia; microvilliF) None of the above
G) B) and C)

Question 2

Sodium and glucose are transported together from the intestinal lumen into an intestinal cell.The carrier protein is a(n)  and the process is called .

Accepted Answer

A)  symport; cotransport
B)  symport; countertransport
C)  antiport; countertransport
D)  antiport; cotransport
E)  uniport; facilitated diffusionF) A) and B)
G) A) and C)

Question 3

Ligand-gated channels are membrane proteins that open or close in response to the binding of a
chemical.

Accepted Answer

A) True 
 B)False

Question 4

What organelle is most active in causing programmed cell death?

Accepted Answer

A)  rough endoplasmic reticulum
B)  nucleus
C)  centriole
D)  lysosome
E)  mitochondrionF) B) and E)
G) None of the above

Question 5

Water flows through a selectively permeable membrane in a process called , but water molecules cross the membrane more easily through channels of transmembrane proteins called
)

Accepted Answer

A)  osmosis; water pumps
B)  osmosis; aquaporins
C)  osmosis; uniport
D)  filtration; aquaporins
E)  filtration; water pumpsF) D) and E)
G) None of the above

Question 6

synthesize(s)  carbohydrates and put(s)  finishing touches on proteins synthesized at .

Accepted Answer

A)  Smooth ER; rough ER
B)  The Golgi complex; rough ER
C)  Smooth ER; the Golgi complex
D)  The Golgi complex; smooth ER
E)  Ribosomes; smooth ERF) C) and D)
G) None of the above

Question 7

The Na+-K+ pump has the following functions except

Accepted Answer

A)  heat production.
B)  transport of Na+ into the cell and K+ out of the cell.
C)  secondary active transport.
D)  regulation of cell volume.
E)  maintenance of membrane potential.F) B) and C)
G) B) and E)

Question 8

A receptor protein in the plasma membrane will not bind to just any chemical in the extracellular fluid, but only to certain ones.That is to say, the receptor exhibits

Accepted Answer

A)  selectivity.
B)  specificity.
C)  efficacy.
D)  saturation.
E)  fidelity.F) None of the above
G) A) and D)

Question 9

is the process in which forces water and small solutes such as salts through narrow clefts between capillary cells.

Accepted Answer

A)  Filtration; hydrostatic pressure
B)  Osmosis; hydrostatic pressure
C)  Active transport; osmotic pressure
D)  Active transport; hydrostatic pressure
E)  Osmosis; osmotic pressureF) B) and C)
G) A) and E)

Question 10

Most human cells range from 10 to 15 micrometers in diameter.What limits how large a cell can be?

Accepted Answer

A)  a cell's lifespan
B)  nutrients available in the environment of a cell
C)  the relationship between its volume and length
D)  the relationship between its length and surface area
E)  the relationship between its volume and surface areaF) A) and B)
G) B) and E)

Question 11

This figure shows the plasma membrane.What does "D" represent?

Accepted Answer

A)  a peripheral protein
B)  a channel protein
C)  a glycoprotein
D)  a phospholipid
E)  cholesterolF) A) and D)
G) A) and E)

Question 12

describes the number of particles of a solute in a solution, whereas is the ability of a solution to affect the fluid volume in a cell.

Accepted Answer

A)  Tonicity; osmolarity
B)  Osmolarity; diffusion
C)  Osmolarity; tonicity
D)  Osmolarity; molarity
E)  Tonicity; diffusionF) D) and E)
G) A) and B)

Question 13

All of the generalizations below constitute the modern cell theory except

Accepted Answer

A)  an organism's structure and all of its functions are ultimately due to the activities of its cells.
B)  all cells come only from preexisting cells.
C)  all cells occupy space.
D)  all organisms are composed of cells and cell products.
E)  the cell is the basic structural and functional unit of life.F) A) and B)
G) D) and E)

Question 14

A cell's second messengers serve to transport material through the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 15

Cells lining the small intestine are specialized for absorption of nutrients.Their plasma membrane has

Accepted Answer

A)  flagella.
B)  cilia.
C)  microvilli.
D)  a glycocalyx.
E)  dynein arms.F) All of the above
G) A) and D)

Question 16

The fluid outside of a cell is called

Accepted Answer

A)  cytosol.
B)  intracellular fluid.
C)  extracellular fluid.
D)  cytoplasm.
E)  nucleoplasm.F) A) and E)
G) B) and E)

Question 17

In the plasma membrane, glycolipids and glycoproteins face toward the cytoplasm, while peripheral proteins always face toward the ECF.

Accepted Answer

A) True 
 B)False

Question 18

This figure shows the structure of a representative cell.What does "C" represent?

Accepted Answer

A)  Golgi complex
B)  rough ER
C)  smooth ER
D)  mitochondrion
E)  nucleolusF) D) and E)
G) A) and E)

Question 19

The Golgi complex makes peroxisomes but not lysosomes.

Accepted Answer

A) True 
 B)False

Question 20

This figure shows the structure of a representative cell.What does "A" represent?

Accepted Answer

A)  smooth ER
B)  rough ER
C)  Golgi complex
D)  mitochondrion
E)  nucleolusF) C) and D)
G) D) and E)

Exam 3: Cellular Form and Function

Most human cells range from 10 to 15 micrometers in diameter.What limits how large a cell can be?

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A cell's second messengers serve to transport material through the plasma membrane.

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Water flows through a selectively permeable membrane in a process called , but water molecules cross the membrane more easily through channels of transmembrane proteins called )

Correct AnswerverifiedShow Answer

provide motility to a cell, act as sensory "antenna" in many cells, and increase a cell's surface area.

Correct AnswerverifiedShow Answer

All of the generalizations below constitute the modern cell theory except

Correct AnswerverifiedShow Answer

A receptor protein in the plasma membrane will not bind to just any chemical in the extracellular fluid, but only to certain ones.That is to say, the receptor exhibits

Correct AnswerverifiedShow Answer

The fluid outside of a cell is called

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The Golgi complex makes peroxisomes but not lysosomes.

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This figure shows the structure of a representative cell.What does "C" represent?

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This figure shows the plasma membrane.What does "D" represent?

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The Na+-K+ pump has the following functions except

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synthesize(s) carbohydrates and put(s) finishing touches on proteins synthesized at .

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This figure shows the structure of a representative cell.What does "A" represent?

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In the plasma membrane, glycolipids and glycoproteins face toward the cytoplasm, while peripheral proteins always face toward the ECF.

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Sodium and glucose are transported together from the intestinal lumen into an intestinal cell.The carrier protein is a(n) and the process is called .

Correct AnswerverifiedShow Answer

Cells lining the small intestine are specialized for absorption of nutrients.Their plasma membrane has

Correct AnswerverifiedShow Answer

describes the number of particles of a solute in a solution, whereas is the ability of a solution to affect the fluid volume in a cell.

Correct AnswerverifiedShow Answer

is the process in which forces water and small solutes such as salts through narrow clefts between capillary cells.

Correct AnswerverifiedShow Answer

Ligand-gated channels are membrane proteins that open or close in response to the binding of a chemical.

Correct AnswerverifiedShow Answer

What organelle is most active in causing programmed cell death?

Correct AnswerverifiedShow Answer

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