Question 1

Which of the following statements is not a tenet of modern cell theory?

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 D)
G) C) and E)

Question 2

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) C) and D)
G) C) and E)

Question 3

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) B) and E)
G) C) and E)

Question 4

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) A) and D)
G) D) and E)

Question 5

The number of particles of a solute in a solution is described by its ____________.The ability of a solution to affect the fluid volume in a cell is referred to as its __________.

Accepted Answer

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

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) B) and C)
G) B) and E)

Question 7

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) C) and D)
G) A) and B)

Question 8

Insulin is taken up,via endocytosis,by the endothelial cells that line blood capillaries.Then,it's transported across the cell to the other side,where it is released.This transport is called __________.

Accepted Answer

A)   pinocytosis
B)   receptor-mediated phagocytosis
C)   passive transport
D)   facilitated transport
E)   transcytosisF) A) and B)
G) A) and C)

Question 9

In its second-messenger role,cAMP activates enzymes called _________,whose job is to regulate other enzymes by adding phosphate groups to them.

Accepted Answer

A)   transmembrane proteins
B)   peripheral proteins
C)   kinases
D)   glycocalyx
E)   blockersF) A) and B)
G) A) and C)

Question 10

One example of pinocytosis is the uptake of low-density lipoproteins (LDLs)by endothelial cells.

Accepted Answer

A) True 
 B)False

Question 11

Although the transmission electron microscope (TEM) can magnify much more than a light microscope,even at identical magnifications the TEM has the advantage of __________.

Accepted Answer

A)   being able to produce photographs of the specimen
B)   being able to work in a vacuum
C)   being able to show individual molecules
D)   producing higher resolution
E)   working better with thinner tissue specimensF) All of the above
G) C) and E) D

Question 12

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

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) C) and D)
G) D) and E) E

Question 13

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 14

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) A) and C)
G) B) and C)

Question 15

What function would immediately cease if the ribosomes of a cell were destroyed?

Accepted Answer

A)   Exocytosis
B)   Active transport
C)   Ciliary action
D)   Protein synthesis
E)   OsmosisF) B) and C)
G) B) and D) D

Question 16

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) A) and D)
G) A) and B)

Question 17

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) A) and C)

Question 18

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) B) and C)
G) A) and B)

Question 19

Which of the following organelles is not involved in protein synthesis?

Accepted Answer

A)   Smooth ER
B)   Rough ER
C)   The Golgi complex
D)   The nucleus
E)   RibosomesF) All of the above
G) A) and E)

Question 20

White blood cells engulf bacteria by means of __________.

Accepted Answer

A)   phagocytosis
B)   cotransport
C)   pinocytosis
D)   active transport
E)   receptor-mediated endocytosisF) A) and B)
G) B) and C)

Exam 3: Cellular Form and Function

Which of the following statements is not a tenet of modern cell theory?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The number of particles of a solute in a solution is described by its ____________.The ability of a solution to affect the fluid volume in a cell is referred to as its __________.

Correct AnswerverifiedShow Answer

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

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

Insulin is taken up,via endocytosis,by the endothelial cells that line blood capillaries.Then,it's transported across the cell to the other side,where it is released.This transport is called __________.

Correct AnswerverifiedShow Answer

In its second-messenger role,cAMP activates enzymes called _________,whose job is to regulate other enzymes by adding phosphate groups to them.

Correct AnswerverifiedShow Answer

One example of pinocytosis is the uptake of low-density lipoproteins (LDLs)by endothelial cells.

Correct AnswerverifiedShow Answer

Although the transmission electron microscope (TEM) can magnify much more than a light microscope,even at identical magnifications the TEM has the advantage of __________.

Correct AnswerverifiedD

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

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What function would immediately cease if the ribosomes of a cell were destroyed?

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

Which of the following organelles is not involved in protein synthesis?

Correct AnswerverifiedShow Answer

White blood cells engulf bacteria by means of __________.

Correct AnswerverifiedShow Answer

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The number of particles of a solute in a solution is described by its __.The ability of a solution to affect the fluid volume in a cell is referred to as its .

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

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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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D

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E

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D

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

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