Question 1

The cell membrane

Accepted Answer

A)   maintains the integrity of the cell.
B)   controls the entry and exit of various substances.
C)   provides a barrier to water-soluble substances.
D)   has all of the above characteristics.E) A) and D)
F) None of the above

Question 2

Proteins are manufactured on mitochondria.

Accepted Answer

A) True 
 B)False

Question 3

Smooth endoplasmic reticulum has ribosomes and rough endoplasmic reticulum does not.

Accepted Answer

A) True 
 B)False

Question 4

Certain white blood cells take in bacterial cells by phagocytosis.

Accepted Answer

A) True 
 B)False

Question 5

Endoplasmic reticulum is best described as a

Accepted Answer

A)   component of the cytoskeleton.
B)   cellular inclusion.
C)   nuclear pore.
D)   network of interconnected membranes.E) A) and B)
F) B) and C)

Question 6

During apoptosis

Accepted Answer

A)   chromosomes join.
B)   the cytoskeleton forms large, complex structures.
C)   mitochondria merge.
D)   the cell can no longer adhere to other cells.E) C) and D)
F) All of the above

Question 7

If the concentration of glucose in the water outside of a cell is higher than the concentration inside,

Accepted Answer

A)   water will enter the cell by osmosis.
B)   water will leave the cell by osmosis.
C)   glucose will enter the cell by osmosis.
D)   glucose will leave the cell by osmosis.E) C) and D)
F) B) and D)

Question 8

Active transport uses energy provided by ATP molecules.

Accepted Answer

A) True 
 B)False

Question 9

During metaphase of mitosis, chromosomes first condense and become visible when stained and viewed under a microscope.

Accepted Answer

A) True 
 B)False

Question 10

Vesicles are formed from

Accepted Answer

A)   lysosomal membrane.
B)   nuclear membrane.
C)   cell membrane.
D)   mitochondrial membrane.E) C) and D)
F) B) and C)

Question 11

Lucky people who cannot be infected with HIV are protected because

Accepted Answer

A)   they are already infected.
B)   their cells lack receptors that admit the virus.
C)   their cells have extra receptors for HIV.
D)   they were vaccinated.E) A) and D)
F) None of the above

Question 12

Microfilaments and microtubules are part of the cytoskeleton.

Accepted Answer

A) True 
 B)False

Question 13

Facilitated diffusion moves a substance following its concentration gradient, with the aid of a carrier protein.

Accepted Answer

A) True 
 B)False

Question 14

The Golgi apparatus and endoplasmic reticulum take part in secretion.

Accepted Answer

A) True 
 B)False

Question 15

Chromatin consists of DNA and protein.

Accepted Answer

A) True 
 B)False

Question 16

About how many cells constitute the body of an adult?

Accepted Answer

A)   50 to 100 million
B)   50 to 100 billion
C)   50 to 100 trillion
D)   50 to 100 quadrillionE) B) and C)
F) B) and D)

Question 17

Stages of the cell cycle in correct sequence are interphase, mitosis, cytoplasmic division, and differentiation.

Accepted Answer

A) True 
 B)False

Question 18

The function of the nucleus is to

Accepted Answer

A)   direct the activities of the cell.
B)   form mitochondria.
C)   transfer energy.
D)   provide cell shape.E) A) and C)
F) All of the above

Question 19

If a nerve cell has a greater concentration of Na+ on the outside and K+ on the inside of the cell membrane, then the movement of Na+ outside and K+ inside is by diffusion.

Accepted Answer

A) True 
 B)False

Question 20

During anaphase of mitosis, centromeres separate and replicated chromosomes separate.

Accepted Answer

A) True 
 B)False

Exam 3: Cells

About how many cells constitute the body of an adult?

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Vesicles are formed from

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Endoplasmic reticulum is best described as a

Correct AnswerverifiedShow Answer

Active transport uses energy provided by ATP molecules.

Correct AnswerverifiedShow Answer

The cell membrane

Correct AnswerverifiedShow Answer

Chromatin consists of DNA and protein.

Correct AnswerverifiedShow Answer

Microfilaments and microtubules are part of the cytoskeleton.

Correct AnswerverifiedShow Answer

Stages of the cell cycle in correct sequence are interphase, mitosis, cytoplasmic division, and differentiation.

Correct AnswerverifiedShow Answer

During apoptosis

Correct AnswerverifiedShow Answer

The Golgi apparatus and endoplasmic reticulum take part in secretion.

Correct AnswerverifiedShow Answer

If a nerve cell has a greater concentration of Na+ on the outside and K+ on the inside of the cell membrane, then the movement of Na+ outside and K+ inside is by diffusion.

Correct AnswerverifiedShow Answer

Smooth endoplasmic reticulum has ribosomes and rough endoplasmic reticulum does not.

Correct AnswerverifiedShow Answer

Certain white blood cells take in bacterial cells by phagocytosis.

Correct AnswerverifiedShow Answer

The function of the nucleus is to

Correct AnswerverifiedShow Answer

During metaphase of mitosis, chromosomes first condense and become visible when stained and viewed under a microscope.

Correct AnswerverifiedShow Answer

Lucky people who cannot be infected with HIV are protected because

Correct AnswerverifiedShow Answer

Facilitated diffusion moves a substance following its concentration gradient, with the aid of a carrier protein.

Correct AnswerverifiedShow Answer

If the concentration of glucose in the water outside of a cell is higher than the concentration inside,

Correct AnswerverifiedShow Answer

During anaphase of mitosis, centromeres separate and replicated chromosomes separate.

Correct AnswerverifiedShow Answer

Proteins are manufactured on mitochondria.

Correct AnswerverifiedShow Answer

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If a nerve cell has a greater concentration of Na⁺ on the outside and K⁺ on the inside of the cell membrane, then the movement of Na⁺ outside and K⁺ inside is by diffusion.

Correct Answer
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