Question 1

The sodium-glucose transport protein (SGLT)is one example of an active transport process involving a uniport carrier.

Accepted Answer

A) True 
 B)False

Question 2

A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.

Accepted Answer

A) True 
 B)False

Question 3

The most abundant molecules in the plasma membrane are __________.

Accepted Answer

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

Question 4

Which of these brings nonspecific material into a cell?

Accepted Answer

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

Question 5

The plasma membrane of cells lining the small intestine has __________,which are specialized for absorption of nutrients.

Accepted Answer

A)   flagella
B)   cilia
C)   microvilli
D)   a glycocalyx
E)   dynein armsF) A) and B)
G) None of the above

Question 6

Most transmembrane proteins have ___________ regions facing the intra- and extracellular fluid,and __________ regions embedded in the phospholipid bilayer.

Accepted Answer

A)   hydrophilic;hydrophilic
B)   hydrophilic;hydrophobic
C)   hydrophobic;hydrophobic
D)   hydrophobic;hydrophilic
E)   lipophilic;lipophobicF) None of the above
G) D) and E)

Question 7

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

Question 8

A patient was severely dehydrated,losing a large amount of fluid.The patient was given intravenous fluids of normal saline.Normal saline is ________ to your blood cells and is about __________ NaCl.

Accepted Answer

A)   isotonic;9%
B)   isotonic;0.9%
C)   hypertonic;9%
D)   hypotonic;0.9%
E)   hypotonic;9%F) A) and E)
G) C) and D)

Question 9

In the glycocalyx,__________ act like identification tags that enable the body to distinguish its own cells from foreign and diseased cells.

Accepted Answer

A)   glycoproteins
B)   lipoproteins
C)   cholesterol molecules
D)   phospholipids
E)   cell-adhesion moleculesF) C) and D)
G) B) and E)

Question 10

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) A) and B)
G) B) and E)

Question 11

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

Question 12

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

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Cellular membranes are permeable to _________,but impermeable to ___________.

Accepted Answer

A)   nutrients;wastes
B)   proteins;nutrients
C)   phosphates;wastes
D)   nutrients;proteins
E)   wastes;nutrientsF) A) and B)
G) All of the above

Question 15

_____________ 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) A) and B)
G) All of the above

Question 16

Which of the following gives a cell structural support,determines the shape of a cell,and directs the movement of substances through a cell?

Accepted Answer

A)   Cholesterol
B)   The nucleus
C)   The plasma membrane
D)   The Golgi complex
E)   The cytoskeletonF) B) and E)
G) C) and D)

Question 17

Cells were first discovered when a scientist named __________ observed cell walls in cork under a microscope.

Accepted Answer

A)   Robert Hooke
B)   Theodor Schwann
C)   Louis Pastuer
D)   Galen
E)   GalileoF) C) and D)
G) All of the above

Question 18

The greater the concentration gradient,the faster the diffusion rate.

Accepted Answer

A) True 
 B)False

Question 19

__________ provide motility to a sperm cell,__________ act as sensory "antennae" 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) B) and D)
G) A) and D)

Question 20

Both the nucleus and the mitochondrion are surrounded by a two layer membrane.

Accepted Answer

A) True 
 B)False

Exam 3: Cellular Form and Function

A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.

Correct AnswerverifiedShow Answer

The most abundant molecules in the plasma membrane are __________.

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

The greater the concentration gradient,the faster the diffusion rate.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Cellular membranes are permeable to _________,but impermeable to ___________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these brings nonspecific material into a cell?

Correct AnswerverifiedShow Answer

Both the nucleus and the mitochondrion are surrounded by a two layer membrane.

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 gives a cell structural support,determines the shape of a cell,and directs the movement of substances through a cell?

Correct AnswerverifiedShow Answer

The plasma membrane of cells lining the small intestine has __________,which are specialized for absorption of nutrients.

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

The sodium-glucose transport protein (SGLT)is one example of an active transport process involving a uniport carrier.

Correct AnswerverifiedShow Answer

Most transmembrane proteins have ___________ regions facing the intra- and extracellular fluid,and __________ regions embedded in the phospholipid bilayer.

Correct AnswerverifiedShow Answer

Cells were first discovered when a scientist named __________ observed cell walls in cork under a microscope.

Correct AnswerverifiedShow Answer

A patient was severely dehydrated,losing a large amount of fluid.The patient was given intravenous fluids of normal saline.Normal saline is ________ to your blood cells and is about __________ NaCl.

Correct AnswerverifiedShow Answer

In the glycocalyx,__________ act like identification tags that enable the body to distinguish its own cells from foreign and diseased cells.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answer
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Cellular membranes are permeable to _,but impermeable to ___.

Correct Answer
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provide motility to a sperm cell, act as sensory "antennae" in many cells,and ____ increase a cell's surface area.

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

Correct Answer
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Correct Answer
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Correct Answer
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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 Answer
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Correct Answer
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Correct Answer
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Most transmembrane proteins have _ regions facing the intra- and extracellular fluid,and regions embedded in the phospholipid bilayer.

Correct Answer
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A patient was severely dehydrated,losing a large amount of fluid.The patient was given intravenous fluids of normal saline.Normal saline is to your blood cells and is about __ NaCl.

Correct Answer
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Correct Answer
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Correct Answer
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