Question 1

The sodium-potassium (Na+-K+) pump transports both sodium and potassium __________ their concentration gradients in a process called ____________.

Accepted Answer

A)  up; active transport
B)  up; facilitated transport
C)  up; cotransport
D)  down; active transport
E)  down; countertransportF) B) and D)
G) A) and E)

Question 2

Membrane proteins that bind to signals by which cells communicate are called __________.

Accepted Answer

A)  receptors
B)  enzymes
C)  carriers
D)  cell-identity markers
E)  cell-adhesion moleculesF) A) and E)
G) All of the above

Question 3

Cells that are thick in the middle and tapered toward the end are called __________ cells.

Accepted Answer

A)  squamous
B)  stellate
C)  columnar
D)  spheroid
E)  fusiformF) A) and D)
G) D) and E)

Question 4

Which of the following is not one of the three basic components of a cell?

Accepted Answer

A)  Cytoplasm
B)  Nucleus
C)  Plasma membrane
D)  Interstitial fluidE) All of the above
F) A) and B)

Question 5

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) None of the above
G) D) and E)

Question 6

Accumulated cell products that are never enclosed in a unit membrane are called ____________.

Accepted Answer

A)  organelles
B)  inclusions
C)  microtubules
D)  microfilaments
E)  centriolesF) B) and D)
G) All of the above

Question 7

Which organelle synthesizes steroids in the ovary and stores calcium in muscle cells?

Accepted Answer

A)  Smooth endoplasmic reticulum
B)  Rough endoplasmic reticulum
C)  Nucleus
D)  Mitochondrion
E)  Golgi complexF) A) and B)
G) C) and D)

Question 8

The most abundant molecules in the plasma membrane are __________.

Accepted Answer

A)  glycolipids
B)  phospholipids
C)  prostaglandins
D)  proteins
E)  cholesterol moleculesF) B) and E)
G) A) and B)

Question 9

Which of the following is not associated with the composition of the cytoskeleton?

Accepted Answer

A)  Microfilaments
B)  Microtubules
C)  Cilia
D)  Intermediate filaments
E)  Terminal webF) D) and E)
G) B) and E)

Question 10

_____________ 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) C) and D)
G) B) and E)

Question 11

If a cell doubled in diameter,it would have twice as much cytoplasm to maintain.

Accepted Answer

A) True 
 B)False

Question 12

ATP is consumed when __________ transfer solutes from one side of the membrane to the other.

Accepted Answer

A)  receptors
B)  pumps
C)  cell-adhesion molecules
D)  channels
E)  cell-identity markersF) B) and D)
G) A) and D)

Question 13

Which of the following processes could occur only through the plasma membrane of a living cell?

Accepted Answer

A)  Facilitated diffusion
B)  Simple diffusion
C)  Filtration
D)  Osmosis
E)  Active transportF) A) and B)
G) C) and E)

Question 14

The plasma membrane is mostly made of molecules that have hydrophilic heads and hydrophobic tails.These molecules are called _________.

Accepted Answer

A)  proteoglycans
B)  glycolipids
C)  glycoproteins
D)  phospholipids
E)  lipoproteinsF) B) and C)
G) C) and D)

Question 15

A receptor protein in the plasma membrane will not bind to just any chemical in the extracellular fluid,but only to certain ones.This property is called _________.

Accepted Answer

A)  selectivity
B)  specificity
C)  efficacy
D)  saturation
E)  fidelityF) C) and D)
G) B) and E)

Question 16

Na+-K+ ATPase is a countertransport antiport carrier,which always requires energy.

Accepted Answer

A) True 
 B)False

Question 17

__________ play an important role in cell division,and they are made of __________.

Accepted Answer

A)  Mitochondria; microtubules
B)  Ribosomes; intermediate filaments
C)  Nucleoli; microfilaments
D)  Centrioles; microtubules
E)  Inclusions; centrosomesF) B) and D)
G) None of the above

Question 18

Which of these brings nonspecific material into a cell?

Accepted Answer

A)  Phagocytosis
B)  Receptor-mediated endocytosis
C)  Transcytosis
D)  Pinocytosis
E)  ExocytosisF) A) and C)
G) B) and E)

Question 19

Which of the following organelles sorts,cuts,splices,and packages newly formed proteins into membrane-bound vesicles?

Accepted Answer

A)  Smooth ER
B)  Rough ER
C)  Golgi complex
D)  Mitochondrion
E)  NucleolusF) None of the above
G) B) and E)

Question 20

The term _____________ refers to a membrane that allows some things to pass through it,but not others.

Accepted Answer

A)  selectively permeable
B)  glycocalyx
C)  phospholipid bilayer
D)  specificity
E)  carrier-mediatedF) A) and C)
G) B) and E)

Exam 3: Cellular Form and Function

Which of the following organelles sorts,cuts,splices,and packages newly formed proteins into membrane-bound vesicles?

Correct AnswerverifiedShow Answer

Which of the following is not one of the three basic components of a cell?

Correct AnswerverifiedShow Answer

The most abundant molecules in the plasma membrane are __________.

Correct AnswerverifiedShow Answer

The plasma membrane is mostly made of molecules that have hydrophilic heads and hydrophobic tails.These molecules are called _________.

Correct AnswerverifiedShow Answer

Na+-K+ ATPase is a countertransport antiport carrier,which always requires energy.

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

Which of the following processes could occur only through the plasma membrane of a living cell?

Correct AnswerverifiedShow Answer

__________ play an important role in cell division,and they are made of __________.

Correct AnswerverifiedShow Answer

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

ATP is consumed when __________ transfer solutes from one side of the membrane to the other.

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.This property is called _________.

Correct AnswerverifiedShow Answer

Which of the following is not associated with the composition of the cytoskeleton?

Correct AnswerverifiedShow Answer

Accumulated cell products that are never enclosed in a unit membrane are called ____________.

Correct AnswerverifiedShow Answer

Membrane proteins that bind to signals by which cells communicate are called __________.

Correct AnswerverifiedShow Answer

Which organelle synthesizes steroids in the ovary and stores calcium in muscle cells?

Correct AnswerverifiedShow Answer

If a cell doubled in diameter,it would have twice as much cytoplasm to maintain.

Correct AnswerverifiedShow Answer

The sodium-potassium (Na+-K+) pump transports both sodium and potassium __________ their concentration gradients in a process called ____________.

Correct AnswerverifiedShow Answer

Cells that are thick in the middle and tapered toward the end are called __________ cells.

Correct AnswerverifiedShow Answer

Which of these brings nonspecific material into a cell?

Correct AnswerverifiedShow Answer

The term _____________ refers to a membrane that allows some things to pass through it,but not others.

Correct AnswerverifiedShow Answer

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Na⁺-K⁺ ATPase is a countertransport antiport carrier,which always requires energy.

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

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play an important role in cell division,and they are made of .

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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 __.

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The sodium-potassium (Na⁺-K⁺) pump transports both sodium and potassium their concentration gradients in a process called __.

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