Question 1

When the solute concentration outside of a cell is equal to the solute concentration inside of the cell, the cell is in a(n) ____________ solution.

Accepted Answer

The answer of When the solute concentration outside of a...

Question 2

The hormone insulin initiates a signal transduction pathway that results in the uptake of glucose by cells. In the early stages of many cases of type II diabetes, people produce insulin but their cells are unable to allow the glucose to enter. Provide a hypothesis as to why this might be the case.

Accepted Answer

Hormones must interact with protein rece...

Question 3

Plasmodesmata are not found in animal cells.

Accepted Answer

A) True 
 B)False

Question 4

The human hormone insulin is produced only by a single organ, the pancreas, yet insulin is used to move glucose from the bloodstream into cells all over the body. What aspect of hormones makes it possible for insulin to work throughout the body?

Accepted Answer

A)   Hormones are able to stop cell-to-cell communication.
B)   Hormones all cross cell membranes, and thus can move freely throughout the body.
C)   Hormones cause rapid cell-to-cell signaling.
D)   Hormones are long-range signaling molecules.E) A) and B)
F) A) and C)

Question 5

During ___________ endocytosis, specific substances interact with proteins located on the plasma membrane of the cell.

Accepted Answer

The answer of During ___________ endocytosis, specific substances interact with...

Question 6

Cell signaling

Accepted Answer

A)   is always a rapid process.
B)   can be fast or slow.
C)   is always a slow process.
D)   does not occur in plants.E) A) and D)
F) B) and D)

Question 7

People are often warned to watch their blood cholesterol level to be sure it does not become too high. In fact, some people do not eat any cholesterol-containing foods at all. Even though we associate elevated cholesterol levels with a risk of heart attack and stroke, why does the body make some cholesterol even if none is eaten?

Accepted Answer

A)   Cholesterol is the basis of all steroid hormones in the body.
B)   Cholesterol is used by the mitochondria for cellular respiration.
C)   Cholesterol is a short-range signaling molecule that does not last long in the body.
D)   Cholesterol is a key component of DNA.E) A) and B)
F) B) and D)

Question 8

Active carrier proteins use energy to carry passive carrier proteins into cells.

Accepted Answer

A) True 
 B)False

Question 9

Hydrophilic signaling molecules interact with cells by interacting with cell surface _____.

Accepted Answer

The answer of Hydrophilic signaling molecules interact with cells by...

Question 10

Cells surrounded by a hypertonic solution would lose water.

Accepted Answer

A) True 
 B)False

Question 11

Animal cells are attached to neighboring cells by

Accepted Answer

A)   their extracellular matrix.
B)   gap junctions.
C)   tight junctions.
D)   all of the aboveE) None of the above
F) All of the above

Question 12

What is the effect of the signaling molecule nitric oxide?

Accepted Answer

A)   It causes the diameter of blood vessels to expand.
B)   It decreases blood flow to the heart.
C)   It allows an organism to respond rapidly to dangerous situations.
D)   It causes an increase in blood pressure.E) A) and D)
F) All of the above

Question 13

The concentration of solutes is higher within the mitochondria than it is in the cytosol. The cytosol is ______ [hypertonic, hypotonic, or isotonic] to the inside of the mitochondrion.

Accepted Answer

The answer of The concentration of solutes is higher within...

Question 14

Channel proteins provide a means for large _____________ [hydrophobic or hydrophilic] molecules to move across the plasma membrane.

Accepted Answer

The answer of Channel proteins provide a means for large...

Question 15

When you eat a meal, cells in your pancreas deliver insulin by the process of _________.

Accepted Answer

The answer of When you eat a meal, cells in...

Question 16

Active transport

Accepted Answer

A)   moves substances out of but not into cells.
B)   occurs in dense patches far removed from passive carrier proteins.
C)   moves substances from areas of high concentration to areas of low concentration.
D)   involves a carrier protein.E) A) and B)
F) All of the above

Question 17

Tight junctions prevent the movement of the extracellular matrix between cells.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following would supply energy directly to an active carrier protein?

Accepted Answer

A)   starch
B)   sugars
C)   ATP
D)   fatty acidsE) B) and D)
F) C) and D)

Question 19

The viscous coating found around most animal cells is called the extracellular _________.

Accepted Answer

The answer of The viscous coating found around most animal...

Question 20

Multicellular organisms have various specialized cells because

Accepted Answer

A)   any one cell can contain only one kind of organelle.
B)   each kind of cell is able to function in isolation.
C)   specialized cells ensure that processes necessary for life occur efficiently.
D)   the DNA of cells is not accurately copied.E) A) and C)
F) B) and C)

Exam 6: Cell Membranes, Transport, and Communication

Cells surrounded by a hypertonic solution would lose water.

Correct Answer
verified

The hormone insulin initiates a signal transduction pathway that results in the uptake of glucose by cells. In the early stages of many cases of type II diabetes, people produce insulin but their cells are unable to allow the glucose to enter. Provide a hypothesis as to why this might be the case.

Correct Answer
verified
Hormones must interact with protein rece...
View Answer

The human hormone insulin is produced only by a single organ, the pancreas, yet insulin is used to move glucose from the bloodstream into cells all over the body. What aspect of hormones makes it possible for insulin to work throughout the body?

Correct Answer
verified

When the solute concentration outside of a cell is equal to the solute concentration inside of the cell, the cell is in a(n) ____________ solution.

Correct Answer
verified

Active transport

Correct Answer
verified

Tight junctions prevent the movement of the extracellular matrix between cells.

Correct Answer
verified

When you eat a meal, cells in your pancreas deliver insulin by the process of _________.

Correct Answer
verified

Hydrophilic signaling molecules interact with cells by interacting with cell surface _____.

Correct Answer
verified

The viscous coating found around most animal cells is called the extracellular _________.

Correct Answer
verified

Animal cells are attached to neighboring cells by

Correct Answer
verified

Correct Answer
verified

Multicellular organisms have various specialized cells because

Correct Answer
verified

The concentration of solutes is higher within the mitochondria than it is in the cytosol. The cytosol is ______ [hypertonic, hypotonic, or isotonic] to the inside of the mitochondrion.

Correct Answer
verified

During ___________ endocytosis, specific substances interact with proteins located on the plasma membrane of the cell.

Correct Answer
verified

Channel proteins provide a means for large _____________ [hydrophobic or hydrophilic] molecules to move across the plasma membrane.

Correct Answer
verified

Cell signaling

Correct Answer
verified

What is the effect of the signaling molecule nitric oxide?

Correct Answer
verified

Plasmodesmata are not found in animal cells.

Correct Answer
verified

Active carrier proteins use energy to carry passive carrier proteins into cells.

Correct Answer
verified

Which of the following would supply energy directly to an active carrier protein?

Correct Answer
verified

Exam 6: Cell Membranes, Transport, and Communication

Cells surrounded by a hypertonic solution would lose water.

Correct AnswerverifiedShow Answer

The hormone insulin initiates a signal transduction pathway that results in the uptake of glucose by cells. In the early stages of many cases of type II diabetes, people produce insulin but their cells are unable to allow the glucose to enter. Provide a hypothesis as to why this might be the case.

Correct AnswerverifiedHormones must interact with protein rece...View AnswerShow Answer

The human hormone insulin is produced only by a single organ, the pancreas, yet insulin is used to move glucose from the bloodstream into cells all over the body. What aspect of hormones makes it possible for insulin to work throughout the body?

Correct AnswerverifiedShow Answer

When the solute concentration outside of a cell is equal to the solute concentration inside of the cell, the cell is in a(n) ____________ solution.

Correct AnswerverifiedShow Answer

Active transport

Correct AnswerverifiedShow Answer

Tight junctions prevent the movement of the extracellular matrix between cells.

Correct AnswerverifiedShow Answer

When you eat a meal, cells in your pancreas deliver insulin by the process of _________.

Correct AnswerverifiedShow Answer

Hydrophilic signaling molecules interact with cells by interacting with cell surface _____.

Correct AnswerverifiedShow Answer

The viscous coating found around most animal cells is called the extracellular _________.

Correct AnswerverifiedShow Answer

Animal cells are attached to neighboring cells by

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Multicellular organisms have various specialized cells because

Correct AnswerverifiedShow Answer

The concentration of solutes is higher within the mitochondria than it is in the cytosol. The cytosol is ______ [hypertonic, hypotonic, or isotonic] to the inside of the mitochondrion.

Correct AnswerverifiedShow Answer

During ___________ endocytosis, specific substances interact with proteins located on the plasma membrane of the cell.

Correct AnswerverifiedShow Answer

Channel proteins provide a means for large _____________ [hydrophobic or hydrophilic] molecules to move across the plasma membrane.

Correct AnswerverifiedShow Answer

Cell signaling

Correct AnswerverifiedShow Answer

What is the effect of the signaling molecule nitric oxide?

Correct AnswerverifiedShow Answer

Plasmodesmata are not found in animal cells.

Correct AnswerverifiedShow Answer

Active carrier proteins use energy to carry passive carrier proteins into cells.

Correct AnswerverifiedShow Answer

Which of the following would supply energy directly to an active carrier protein?

Correct AnswerverifiedShow Answer

Correct Answer
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verified
Hormones must interact with protein rece...
View Answer

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