Question 1

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.The solution in the thistle tube is ________ to the solution in the beaker.

Accepted Answer

A)  hypertonic
B)  hypotonic
C)  isotonic
D)  none of the answer choicesE) All of the above
F) B) and D)

Question 2

Which statement is NOT true about the proteins in the plasma membrane?

Accepted Answer

A)  Proteins may be attached to the inner surface of the plasma membrane.
B)  The hydrophobic portion of a protein is embedded within the membrane.
C)  Some peripheral proteins are connected to cytoskeletal filaments.
D)  Integral proteins are responsible for membrane functions.
E)  Glycoproteins contain carbohydrate chains that are oriented toward the inner surface of the membrane.F) A) and B)
G) B) and C)

Question 3

Which of the following situations is most likely to produce a heart attack?

Accepted Answer

A)  The gap junctions have collapsed and they do not allow the correct flow of ions from one cell to the next.
B)  The plasmodesmata have collapsed and they do not allow the correct flow of ions from one cell to the next.
C)  The tight junction has ripped and is allowing ions to leak through the membrane lining the heart.
D)  The cell walls have broken down and are not able to support the heart.E) A) and B)
F) B) and C)

Question 4

In the cells that line the lumen of the small intestine,gap junctions keep materials from the digestive tract from slipping between the cells and entering the tissues.

Accepted Answer

A) True 
 B)False

Question 5

In the cell pictured,there is no net movement of water.The amount leaving the cell and entering the cell is the same.In what type of environment is this cell found?

Accepted Answer

A)  hypertonic
B)  hypotonic
C)  isotonic
D)  None of the above.E) C) and D)
F) All of the above

Question 6

If a living plant were moved from a freshwater aquarium to a saltwater aquarium,which of the following would occur?

Accepted Answer

A)  Nothing.The plant would be fine in either aquarium.
B)  The plant's cells would take on ions.
C)  The plant's cells would take on water and would lyse.
D)  The plant's cells would lose water and plasmolysis would occur.E) None of the above
F) A) and D)

Question 7

Explain why the head of one phospholipid would never be found pointing to the tail of another phospholipid.

Accepted Answer

The tails of a phospholipid ar...

Question 8

Which is the best definition of active transport?

Accepted Answer

A)  movement of molecules from an area of their higher concentration to an area of their lower concentration
B)  movement of water across a semi permeable membrane from an area of higher water concentration to an area of lower water concentration
C)  movement of molecules from an area of their lower concentration to an area of their higher concentration
D)  movement of water across a semi permeable membrane from an area of lower water concentration to an area of higher water concentration
E)  movement of a substance against its concentration through the release of energy from ATPF) A) and B)
G) C) and E)

Question 9

Imagine a person has a genetic disorder that prevents them from producing the protein collagen.What types of cellular issues will they be faced with?

Accepted Answer

A)  The cell will not have the ability to divide properly.
B)  The cell will not have the ability to regulate the movement of molecules through the membrane.
C)  The cell would not be recognized by the body's immune system.
D)  The cell would not have the ability to resist stretching.
E)  All of the choices are plausible.F) A) and C)
G) B) and D)

Question 10

Which channel protein assists the passage of water across the cell membrane?

Accepted Answer

A)  ATP synthase.
B)  aquaporin.
C)  the sodium-potassium pump.
D)  integrin.E) B) and D)
F) B) and C)

Question 11

Before boarding an airplane on a commercial flight,the traveler must show personal identification and a ticket to airport security.The traveler must then remove his shoes and place any carry-on items on the belt of an X-ray machine before walking through the checkpoint.How is the passage of molecules through a membrane similar to travelers passing through airport security?

Accepted Answer

Answers may vary.Airport security could ...

Question 12

A crystal of green dye is added to a beaker of water.Explain what will happen to the crystal of green dye.Define diffusion and state the ultimate outcome of diffusion.

Accepted Answer

The dye will diffuse from an area of hig...

Question 13

Which cell junction is unique to animals?

Accepted Answer

A)  gap
B)  tight
C)  desmosomes
D)  All are unique to animals.E) B) and C)
F) A) and C)

Question 14

The component of an animal cell membrane that regulates the fluidity by stiffening the membrane at higher temperatures and preventing the membrane from freezing at lower temperatures is

Accepted Answer

A)  cholesterol.
B)  lipid in nature.
C)  a steroid.
D)  All of the choices are correct.E) B) and C)
F) B) and D)

Question 15

Whether a molecule can cross the plasma membrane depends upon

Accepted Answer

A)  the size of the molecule.
B)  the shape of the molecule.
C)  the chemical properties of the molecule.
D)  the charge of the molecule.
E)  All of the choices are correct.F) B) and E)
G) All of the above

Question 16

Is this cell an animal or plant cell? In what type of environment is this cell found? Is there a net movement of water into or out of the cell? Explain your answer.

Accepted Answer

This is a plant cell in a hype...

Question 17

In the sodium-potassium pump,sodium is transported into the cell and potassium is transported out of the cell using ATP energy.

Accepted Answer

A) True 
 B)False

Question 18

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.Where is the highest concentration of water found?

Accepted Answer

A)  in the 10% solution
B)  in the 5% solution
C)  the concentration of water is the same in both solutions
D)  None of the answer choicesE) B) and D)
F) A) and B)

Question 19

Which type of cellular process will most likely be used by an amoeba in order to obtain food?

Accepted Answer

A)  phagocytosis
B)  pinocytosis
C)  exocytosis
D)  receptor-mediated endocytosisE) B) and C)
F) A) and C)

Question 20

What will happen to a celery stick that is placed in a glass of water?

Accepted Answer

A)  Salts will move into the celery cells from the surrounding solution.
B)  Water will move into the celery cells from the surrounding solution.
C)  Salts will move out of the celery cells into the surrounding solution.
D)  Water will move out of the celery cells into the surrounding solution.
E)  None of these choices will occur.F) A) and C)
G) C) and D)

Exam 5: Membrane Structure and Function

In the cell pictured,there is no net movement of water.The amount leaving the cell and entering the cell is the same.In what type of environment is this cell found?

Correct Answer
verified

Which statement is NOT true about the proteins in the plasma membrane?

Correct Answer
verified

In the cells that line the lumen of the small intestine,gap junctions keep materials from the digestive tract from slipping between the cells and entering the tissues.

Correct Answer
verified

Which is the best definition of active transport?

Correct Answer
verified

The component of an animal cell membrane that regulates the fluidity by stiffening the membrane at higher temperatures and preventing the membrane from freezing at lower temperatures is

Correct Answer
verified

If a living plant were moved from a freshwater aquarium to a saltwater aquarium,which of the following would occur?

Correct Answer
verified

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.The solution in the thistle tube is ________ to the solution in the beaker.

Correct Answer
verified

What will happen to a celery stick that is placed in a glass of water?

Correct Answer
verified

Correct Answer
verified
Answers may vary.Airport security could ...
View Answer

Which cell junction is unique to animals?

Correct Answer
verified

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.Where is the highest concentration of water found?

Correct Answer
verified

Imagine a person has a genetic disorder that prevents them from producing the protein collagen.What types of cellular issues will they be faced with?

Correct Answer
verified

Explain why the head of one phospholipid would never be found pointing to the tail of another phospholipid.

Correct Answer
verified
The tails of a phospholipid ar...
View Answer

Which of the following situations is most likely to produce a heart attack?

Correct Answer
verified

In the sodium-potassium pump,sodium is transported into the cell and potassium is transported out of the cell using ATP energy.

Correct Answer
verified

A crystal of green dye is added to a beaker of water.Explain what will happen to the crystal of green dye.Define diffusion and state the ultimate outcome of diffusion.

Correct Answer
verified
The dye will diffuse from an area of hig...
View Answer

Which type of cellular process will most likely be used by an amoeba in order to obtain food?

Correct Answer
verified

Which channel protein assists the passage of water across the cell membrane?

Correct Answer
verified

Is this cell an animal or plant cell? In what type of environment is this cell found? Is there a net movement of water into or out of the cell? Explain your answer.

Correct Answer
verified
This is a plant cell in a hype...
View Answer

Whether a molecule can cross the plasma membrane depends upon

Correct Answer
verified

Exam 5: Membrane Structure and Function

In the cell pictured,there is no net movement of water.The amount leaving the cell and entering the cell is the same.In what type of environment is this cell found?

Correct AnswerverifiedShow Answer

Which statement is NOT true about the proteins in the plasma membrane?

Correct AnswerverifiedShow Answer

In the cells that line the lumen of the small intestine,gap junctions keep materials from the digestive tract from slipping between the cells and entering the tissues.

Correct AnswerverifiedShow Answer

Which is the best definition of active transport?

Correct AnswerverifiedShow Answer

The component of an animal cell membrane that regulates the fluidity by stiffening the membrane at higher temperatures and preventing the membrane from freezing at lower temperatures is

Correct AnswerverifiedShow Answer

If a living plant were moved from a freshwater aquarium to a saltwater aquarium,which of the following would occur?

Correct AnswerverifiedShow Answer

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.The solution in the thistle tube is ________ to the solution in the beaker.

Correct AnswerverifiedShow Answer

What will happen to a celery stick that is placed in a glass of water?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedAnswers may vary.Airport security could ...View AnswerShow Answer

Which cell junction is unique to animals?

Correct AnswerverifiedShow Answer

A 10% glucose solution is placed in the thistle tube.The thistle tube is placed in a beaker that contains a 5% glucose solution.Where is the highest concentration of water found?

Correct AnswerverifiedShow Answer

Imagine a person has a genetic disorder that prevents them from producing the protein collagen.What types of cellular issues will they be faced with?

Correct AnswerverifiedShow Answer

Explain why the head of one phospholipid would never be found pointing to the tail of another phospholipid.

Correct AnswerverifiedThe tails of a phospholipid ar...View AnswerShow Answer

Which of the following situations is most likely to produce a heart attack?

Correct AnswerverifiedShow Answer

In the sodium-potassium pump,sodium is transported into the cell and potassium is transported out of the cell using ATP energy.

Correct AnswerverifiedShow Answer

A crystal of green dye is added to a beaker of water.Explain what will happen to the crystal of green dye.Define diffusion and state the ultimate outcome of diffusion.

Correct AnswerverifiedThe dye will diffuse from an area of hig...View AnswerShow Answer

Which type of cellular process will most likely be used by an amoeba in order to obtain food?

Correct AnswerverifiedShow Answer

Which channel protein assists the passage of water across the cell membrane?

Correct AnswerverifiedShow Answer

Is this cell an animal or plant cell? In what type of environment is this cell found? Is there a net movement of water into or out of the cell? Explain your answer.

Correct AnswerverifiedThis is a plant cell in a hype...View AnswerShow Answer

Whether a molecule can cross the plasma membrane depends upon

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers may vary.Airport security could ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The tails of a phospholipid ar...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The dye will diffuse from an area of hig...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
This is a plant cell in a hype...
View Answer

Correct Answer
verified