Question 1

Phagocytosis is an example of passive transport.

Accepted Answer

A) True 
 B)False

Question 2

In cystic fibrosis,cells cannot pump out enough chloride ions.

Accepted Answer

A) True 
 B)False

Question 3

Match between columns
                        Premises: Movement of materials across a cell membrane that does not require energy
Requires the expenditure of energy to move molecules or ions across a cell membrane
Uses transport proteins to assist the movement of materials down a concentration gradient
The movement of molecules down their concentration gradient without the use of a transport protein
Uses a transport vesicle to release materials to the exterior of a cell
Uses a transport vesicle to bring large materials into the cell

Accepted Answer

The Answer of simple diffusion and facilitated diffusion and endocytosis is...

Question 4

One difference between passive and active transport through a cell membrane is that:

Accepted Answer

A)  active transport makes ATP.
B)  active transport requires ATP.
C)  passive transport requires ATP.
D)  passive transport makes ATP.

Question 5

Refer to the figure below, and then answer the question that follows.
 
-For this type of transport to take place,which of the following must be true about the interior and exterior environments?

Accepted Answer

A)  The amount of glucose outside the cell must be less than the interior concentration.
B)  The glucose concentration must be higher outside the cell than inside the cell.
C)  The glucose concentrations on both sides of the cell must be the same.
D)  A transport protein is involved, so it doesn't matter what the concentrations of glucose are on either side of the membrane.

Question 6

The phospholipids of membranes are:

Accepted Answer

A)  hydrophilic molecules.
B)  hydrophobic molecules.
C)  both hydrophilic and hydrophobic molecules.
D)  oils.

Question 7

Carbohydrate chains serve as the binding sites for many signaling molecules.

Accepted Answer

A) True 
 B)False

Question 8

Insulin and many other hormones are protein molecules.Based on your knowledge of transport processes,you can say that cells that secrete these types of hormones do so through:

Accepted Answer

A)  facilitated diffusion.
B)  pinocytosis.
C)  passive diffusion.
D)  receptor-mediated endocytosis.
E)  exocytosis.

Question 9

Water moves freely through a semipermeable membrane.

Accepted Answer

A) True 
 B)False

Question 10

Which statement below is true?

Accepted Answer

A)  All internal cell membranes are similar in structure to the plasma membrane.
B)  The only internal membrane of a cell that is similar to the plasma membrane is the nuclear membrane.
C)  All internal membranes of a cell are just giant invaginations from the plasma membrane.
D)  Vesicle membranes degrade as they fuse with the plasma membrane during exocytosis.

Question 11

Peripheral proteins:

Accepted Answer

A)  usually span the entire membrane.
B)  have no known functions in membranes.
C)  act as channels through which materials can pass.
D)  are defective in cystic fibrosis.
E)  usually attach to integral proteins.

Question 12

Facilitated diffusion is similar to simple diffusion because:

Accepted Answer

A)  each requires the use of energy.
B)  each requires a protein channel for movement to occur.
C)  in both, materials move down their concentration gradient.
D)  each utilizes vesicles to move material around the cell.

Question 13

The plasma membrane proteins of a cell can be linked to colored marker molecules.In an experiment,you labeled the membrane proteins of one cell with a red marker and the membrane proteins of a second cell with a blue marker.Using your understanding of the fluid-mosaic model,what might you see happen if you connected the plasma membranes of the two cells so that they form one continuous membrane?

Accepted Answer

The plasma membrane is fluid,so the prot...

Question 14

Facilitated diffusion occurs with the help of:

Accepted Answer

A)  recognition proteins.
B)  peripheral proteins.
C)  transport proteins.
D)  communication proteins.
E)  ribosomes.

Question 15

Cystic fibrosis is the result of:

Accepted Answer

A)  no sodium channel protein.
B)  no sodium-potassium pump.
C)  an abnormal sodium channel protein.
D)  an abnormal chloride channel protein.
E)  cysts in the lungs.

Question 16

The phospholipid bilayer forms spontaneously in water.

Accepted Answer

A) True 
 B)False

Question 17

A purpose of the plasma membrane is to:

Accepted Answer

A)  form the outer boundary of a cell.
B)  produce proteins.
C)  allow no contact with other cells.
D)  keep harmful substances within the cell.
E)  form ribosomes.

Question 18

All of the following processes bring materials into a cell except:

Accepted Answer

A)  endocytosis.
B)  receptor-mediated endocytosis.
C)  exocytosis.
D)  phagocytosis.

Question 19

Which type of proteins are involved in nutrient transport across the plasma membrane and why?

Accepted Answer

A)  integral proteins, because they span the membrane and are able to carry nutrients across the membrane
B)  peripheral proteins, because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane
C)  integral proteins, because they are smaller and can travel across the membrane, thereby carrying nutrients across the membrane
D)  peripheral proteins, because they span the membrane and are able to carry nutrients across the membrane
E)  receptor proteins, because their carbohydrate chains bind to nutrients and carry them across the membrane

Question 20

You have isolated a cell that is unable to produce cholesterol for its cell membranes.Which of the following defects is this cell most likely to have?

Accepted Answer

A)  The cell membrane will not have the correct fluidity.
B)  The cell will not be able to communicate with other cells.
C)  The cell will be unable to transport nutrients.
D)  The cell will burst as a result of osmosis.
E)  The cell will not be able to regulate the transportation of substances into and out of the cell.

Exam 5: Lifes Border: the Plasma Membrane

Which type of proteins are involved in nutrient transport across the plasma membrane and why?

Correct Answer
verified

Facilitated diffusion is similar to simple diffusion because:

Correct Answer
verified

Refer to the figure below, and then answer the question that follows. -For this type of transport to take place,which of the following must be true about the interior and exterior environments?

Correct Answer
verified

Cystic fibrosis is the result of:

Correct Answer
verified

A purpose of the plasma membrane is to:

Correct Answer
verified

Which statement below is true?

Correct Answer
verified

Match the following.

Insulin and many other hormones are protein molecules.Based on your knowledge of transport processes,you can say that cells that secrete these types of hormones do so through:

Correct Answer
verified

Correct Answer
verified
The plasma membrane is fluid,so the prot...
View Answer

Facilitated diffusion occurs with the help of:

Correct Answer
verified

One difference between passive and active transport through a cell membrane is that:

Correct Answer
verified

Phagocytosis is an example of passive transport.

Correct Answer
verified

You have isolated a cell that is unable to produce cholesterol for its cell membranes.Which of the following defects is this cell most likely to have?

Correct Answer
verified

All of the following processes bring materials into a cell except:

Correct Answer
verified

In cystic fibrosis,cells cannot pump out enough chloride ions.

Correct Answer
verified

The phospholipids of membranes are:

Correct Answer
verified

Water moves freely through a semipermeable membrane.

Correct Answer
verified

Peripheral proteins:

Correct Answer
verified

Carbohydrate chains serve as the binding sites for many signaling molecules.

Correct Answer
verified

The phospholipid bilayer forms spontaneously in water.

Correct Answer
verified

Exam 5: Lifes Border: the Plasma Membrane

Which type of proteins are involved in nutrient transport across the plasma membrane and why?

Correct AnswerverifiedShow Answer

Facilitated diffusion is similar to simple diffusion because:

Correct AnswerverifiedShow Answer

Refer to the figure below, and then answer the question that follows. -For this type of transport to take place,which of the following must be true about the interior and exterior environments?

Correct AnswerverifiedShow Answer

Cystic fibrosis is the result of:

Correct AnswerverifiedShow Answer

A purpose of the plasma membrane is to:

Correct AnswerverifiedShow Answer

Which statement below is true?

Correct AnswerverifiedShow Answer

Match the following.

Insulin and many other hormones are protein molecules.Based on your knowledge of transport processes,you can say that cells that secrete these types of hormones do so through:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe plasma membrane is fluid,so the prot...View AnswerShow Answer

Facilitated diffusion occurs with the help of:

Correct AnswerverifiedShow Answer

One difference between passive and active transport through a cell membrane is that:

Correct AnswerverifiedShow Answer

Phagocytosis is an example of passive transport.

Correct AnswerverifiedShow Answer

You have isolated a cell that is unable to produce cholesterol for its cell membranes.Which of the following defects is this cell most likely to have?

Correct AnswerverifiedShow Answer

All of the following processes bring materials into a cell except:

Correct AnswerverifiedShow Answer

In cystic fibrosis,cells cannot pump out enough chloride ions.

Correct AnswerverifiedShow Answer

The phospholipids of membranes are:

Correct AnswerverifiedShow Answer

Water moves freely through a semipermeable membrane.

Correct AnswerverifiedShow Answer

Peripheral proteins:

Correct AnswerverifiedShow Answer

Carbohydrate chains serve as the binding sites for many signaling molecules.

Correct AnswerverifiedShow Answer

The phospholipid bilayer forms spontaneously in water.

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
The plasma membrane is fluid,so the prot...
View 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

Correct Answer
verified

Correct Answer
verified