Question 1

A ligand is a molecule that enters a cell using

Accepted Answer

A)   active transport.
B)   exocytosis.
C)   receptor-mediated endocytosis.
D)   pinocytosis.
E)   passive diffusion.F) A) and B)
G) B) and D)

Question 2

The three-dimensional form of a cell affects its ability to perform its function.

Accepted Answer

A) True 
 B)False

Question 3

A cell membrane is composed mostly of

Accepted Answer

A)   DNA and RNA.
B)   carbohydrates and lipids.
C)   proteins and nucleic acids.
D)   sugars and starches.
E)   proteins and lipids.F) All of the above
G) A) and B)

Question 4

Apoptosis is

Accepted Answer

A)   a form of secretion.
B)   a form of cell division.
C)   an abnormal form of development.
D)   a response to injury.
E)   a form of cell death.F) A) and E)
G) B) and E)

Question 5

The spread of cancer cells beyond the tissue where they originated is called

Accepted Answer

A)   mitosis.
B)   apoptosis.
C)   metastasis.
D)   angiogenesis.
E)   meiosis.F) A) and E)
G) A) and D)

Question 6

A centrosome consists of two structures called

Accepted Answer

A)   centrioles.
B)   centromeres.
C)   nuclei.
D)   vesicles.
E)   chromosomes.F) All of the above
G) C) and D)

Question 7

Tiny droplets of fluid can enter and cross a cell membrane from the outside in a process called

Accepted Answer

A)   phagocytosis.
B)   active transport.
C)   passive transport.
D)   pinocytosis.
E)   receptor-mediated endocytosis.F) A) and C)
G) All of the above

Question 8

Among other functions,lysosomes detoxify alcohol and break down hydrogen peroxide.

Accepted Answer

A) True 
 B)False

Question 9

Vesicles are formed mainly by folding of the

Accepted Answer

A)   lysosomal membrane.
B)   nuclear membrane.
C)   cell membrane.
D)   endoplasmic reticulum.
E)   Golgi apparatus.F) A) and B)
G) C) and E)

Question 10

Tina has a sunburn.A week later,the skin on her burnt shoulder peels away.The cells are undergoing

Accepted Answer

A)   apoptosis.
B)   mitosis.
C)   metastasis.
D)   secretion.
E)   signal transduction.F) B) and E)
G) A) and B)

Question 11

The rods and tubules of the cytoskeleton are built of

Accepted Answer

A)   carbohydrates.
B)   cilia.
C)   lipids.
D)   protein.
E)   endoplasmic reticulum.F) C) and E)
G) B) and C)

Question 12

Within the nucleoplasm,ribosomes are formed in a small dense body called the _________.

Accepted Answer

The answer of Within the nucleoplasm,ribosomes are formed in a...

Question 13

Specialized structures within cells are called organelles.

Accepted Answer

A) True 
 B)False

Question 14

The phases of the cell cycle are

Accepted Answer

A)   interphase,mitosis and cytokinesis.
B)   interphase,mitosis and meiosis.
C)   prophase,metaphase,anaphase and telophase.
D)   intraphase,meiosis and telophase.
E)   different in different cell types.F) A) and C)
G) B) and D)

Question 15

Membrane proteins are classified by their

Accepted Answer

A)   position.
B)   size.
C)   abundance.
D)   amino acid diversity.
E)   oiliness.F) A) and E)
G) A) and D)

Question 16

A type of cell that has a flagellum is a(n)

Accepted Answer

A)   egg.
B)   sperm.
C)   nerve cell.
D)   muscle cell.
E)   white blood cell.F) A) and B)
G) All of the above

Question 17

All integral proteins extend through the plasma membrane and protrude on both sides.

Accepted Answer

A) True 
 B)False

Question 18

The basic framework of a cell membrane is a triple layer of lipid molecules.

Accepted Answer

A) True 
 B)False

Question 19

Nuclear pores are channels composed of tubulin,a single protein that also forms microfilaments.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is NOT a component of the cell membrane?

Accepted Answer

A)   proteins
B)   lipids
C)   cholesterol
D)   glycerol
E)   glycogenF) A) and B)
G) B) and C)

Exam 3: Cells

The basic framework of a cell membrane is a triple layer of lipid molecules.

Correct AnswerverifiedShow Answer

Tina has a sunburn.A week later,the skin on her burnt shoulder peels away.The cells are undergoing

Correct AnswerverifiedShow Answer

A ligand is a molecule that enters a cell using

Correct AnswerverifiedShow Answer

A type of cell that has a flagellum is a(n)

Correct AnswerverifiedShow Answer

Specialized structures within cells are called organelles.

Correct AnswerverifiedShow Answer

A centrosome consists of two structures called

Correct AnswerverifiedShow Answer

Among other functions,lysosomes detoxify alcohol and break down hydrogen peroxide.

Correct AnswerverifiedShow Answer

Within the nucleoplasm,ribosomes are formed in a small dense body called the _________.

Correct AnswerverifiedShow Answer

Vesicles are formed mainly by folding of the

Correct AnswerverifiedShow Answer

Membrane proteins are classified by their

Correct AnswerverifiedShow Answer

Nuclear pores are channels composed of tubulin,a single protein that also forms microfilaments.

Correct AnswerverifiedShow Answer

The rods and tubules of the cytoskeleton are built of

Correct AnswerverifiedShow Answer

Tiny droplets of fluid can enter and cross a cell membrane from the outside in a process called

Correct AnswerverifiedShow Answer

The three-dimensional form of a cell affects its ability to perform its function.

Correct AnswerverifiedShow Answer

Which of the following is NOT a component of the cell membrane?

Correct AnswerverifiedShow Answer

The phases of the cell cycle are

Correct AnswerverifiedShow Answer

All integral proteins extend through the plasma membrane and protrude on both sides.

Correct AnswerverifiedShow Answer

Apoptosis is

Correct AnswerverifiedShow Answer

The spread of cancer cells beyond the tissue where they originated is called

Correct AnswerverifiedShow Answer

A cell membrane is composed mostly of

Correct AnswerverifiedShow Answer

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