Question 1

Vitamin A, a fat-soluble vitamin, would move across the plasma membrane into the cell

Accepted Answer

A)   in vesicles.
B)   through vitamin membrane channels.
C)   by dissolving in the lipid bilayer.
D)   by transport with carrier molecules.
E)   by active transport.F) D) and E)
G) A) and B)

Question 2

The structural RNA of ribosomes is a

Accepted Answer

A)   pre-mRNA.
B)   proenzyme.
C)   gene.
D)   ribosomal RNA (rRN
A)  .
E)   codon.F) A) and D)
G) A) and C)

Question 3

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "D"?

Accepted Answer

A)   directs cellular activities, contains DNA
B)   contains digestive enzymes
C)   outer boundary of cell, controls entry and exit of substances
D)   major site of ATP synthesis when oxygen is available
E)   site of protein synthesisF) A) and B)
G) B) and E)

Question 4

Which of the following molecules contains the anticodon?

Accepted Answer

A)   mRNA
B)   rRNA
C)   tRNA
D)   DNA
E)   None of these choices are correct.F) C) and D)
G) A) and E)

Question 5

All of the following processes can move substances out of a cell EXCEPT

Accepted Answer

A)   exocytosis.
B)   osmosis.
C)   active transport.
D)   phagocytosis.
E)   diffusion.F) C) and E)
G) A) and B) D

Question 6

Three adjacent nucleotides in mRNA are called a

Accepted Answer

A)   pre-mRNA.
B)   proenzyme.
C)   gene.
D)   ribosomal RNA (rRN
A)  .
E)   codon.F) B) and E)
G) B) and D)

Question 7

A protein that is converted to an active enzyme is a

Accepted Answer

A)   pre-mRNA.
B)   proenzyme.
C)   gene.
D)   ribosomal RNA (rRN
A)  .
E)   codon.F) B) and E)
G) None of the above

Question 8

-Answer these questions about chromosome structure. What does "C" represent?

Accepted Answer

A)   chromatid
B)   proteins
C)   chromosome
D)   centromere
E)   chromatinF) B) and C)
G) D) and E) D

Question 9

The nucleus of a cell functions to

Accepted Answer

A)   digest lipids.
B)   produce ATP.
C)   produce secretory vesicles.
D)   control and coordinate cellular activities.
E)   synthesize proteins.F) B) and C)
G) A) and D)

Question 10

The time between cell divisions is called

Accepted Answer

A)   interphase.
B)   prophase.
C)   metaphase.
D)   anaphase.
E)   telophase.F) B) and C)
G) A) and B)

Question 11

Certain cells in the liver ingest bacteria and debris from damaged cells by a process called

Accepted Answer

A)   pinocytosis.
B)   phagocytosis.
C)   biocytosis.
D)   calmly regulated diffusion.
E)   exocytosis.F) B) and C)
G) All of the above B

Question 12

What type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

Accepted Answer

A)   marker molecules
B)   channel protein
C)   receptor proteins
D)   enzymes
E)   carrier proteinsF) A) and E)
G) A) and D)

Question 13

A person suffered burns over a large part of his body. Evaporation of fluid from the surface of burned areas occurs. As a result of the evaporation process, cells will tend to

Accepted Answer

A)   shrink.
B)   swell.
C)   rupture.
D)   first swell and then resume their original shape.
E)   remain unchanged.F) B) and E)
G) B) and C)

Question 14

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "E"?

Accepted Answer

A)   directs cellular activities, contains DNA
B)   contains digestive enzymes
C)   outer boundary of cell, controls entry and exit of substances
D)   major site of ATP synthesis when oxygen is available
E)   site of protein synthesisF) A) and C)
G) C) and D)

Question 15

Chromosomes begin migrating towards poles of the cell during

Accepted Answer

A)   interphase.
B)   prophase.
C)   metaphase.
D)   anaphase.
E)   telophase.F) B) and E)
G) C) and E)

Question 16

Skeletal muscle cells need large numbers of _______ to make the many proteins they contain.

Accepted Answer

A)   centrosomes
B)   peroxisomes
C)   liposomes
D)   ribosomes
E)   lysosomesF) All of the above
G) A) and E)

Question 17

Microvilli

Accepted Answer

A)   are extensions of the lysosomal membrane.
B)   function to make the cell mobile.
C)   are supported by microtubules.
D)   move the cell.
E)   increase the surface area of the cell.F) C) and D)
G) A) and B)

Question 18

Cytoplasm is found

Accepted Answer

A)   in the nucleus.
B)   outside the nucleus but inside the plasma membrane.
C)   in the cisternae of the endoplasmic reticulum.
D)   on the cristae of the mitochondria.
E)   between the phospholipids in the plasma membrane.F) A) and E)
G) All of the above

Question 19

The fluid-mosaic model of the plasma membrane suggests that

Accepted Answer

A)   cholesterol forms the outermost layer of the membrane.
B)   proteins form a "liquid" sea in the membrane.
C)   phospholipids form a single lipid layer in the center of the membrane.
D)   the membrane is neither rigid nor static in structure.
E)   proteins are not a part of the membrane.F) A) and C)
G) A) and B)

Question 20

Translation

Accepted Answer

A)   requires three types of DNA.
B)   requires the pairing of codons on mRNA with anticodons on tRNA.
C)   involves synthesis of RNA from DNA molecules.
D)   takes place in the nucleus.
E)   requires replication of DNA.F) A) and E)
G) A) and B)

Exam 3: Cell Biology

Vitamin A, a fat-soluble vitamin, would move across the plasma membrane into the cell

Correct AnswerverifiedShow Answer

The structural RNA of ribosomes is a

Correct AnswerverifiedShow Answer

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "D"?

Correct AnswerverifiedShow Answer

Which of the following molecules contains the anticodon?

Correct AnswerverifiedShow Answer

All of the following processes can move substances out of a cell EXCEPT

Correct AnswerverifiedD

Three adjacent nucleotides in mRNA are called a

Correct AnswerverifiedShow Answer

A protein that is converted to an active enzyme is a

Correct AnswerverifiedShow Answer

-Answer these questions about chromosome structure. What does "C" represent?

Correct AnswerverifiedD

The nucleus of a cell functions to

Correct AnswerverifiedShow Answer

The time between cell divisions is called

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Certain cells in the liver ingest bacteria and debris from damaged cells by a process called

Correct AnswerverifiedB

What type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

Correct AnswerverifiedShow Answer

A person suffered burns over a large part of his body. Evaporation of fluid from the surface of burned areas occurs. As a result of the evaporation process, cells will tend to

Correct AnswerverifiedShow Answer

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "E"?

Correct AnswerverifiedShow Answer

Chromosomes begin migrating towards poles of the cell during

Correct AnswerverifiedShow Answer

Skeletal muscle cells need large numbers of _______ to make the many proteins they contain.

Correct AnswerverifiedShow Answer

Microvilli

Correct AnswerverifiedShow Answer

Cytoplasm is found

Correct AnswerverifiedShow Answer

The fluid-mosaic model of the plasma membrane suggests that

Correct AnswerverifiedShow Answer

Translation

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D

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D

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B

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