Question 1

The plasma membrane

Accepted Answer

A)   separates the nucleus from the rest of the cell.
B)   is a rigid protein membrane.
C)   is not permeable.
D)   has a single layer of phospholipids.
E)   regulates movement of materials into and out of the cell.F) C) and E)
G) C) and D)

Question 2

Which of the following activities is associated with lysosomes?

Accepted Answer

A)   Exocytosis
B)   Intracellular support
C)   Destruction of nonfunctional organelles
D)   Energy production
E)   EndocytosisF) A) and E)
G) C) and D)

Question 3

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)   diffusion
E)   exocytosisF) A) and D)
G) A) and C)

Question 4

________ pressure is the force required to prevent the movement of water by osmosis across a selectively permeable membrane.

Accepted Answer

A)   Hydration
B)   Hydrolic
C)   Osmotic
D)   Fluid
E)   FiltrationF) All of the above
G) C) and D)

Question 5

Organelles

Accepted Answer

A)   are extracellular structures.
B)   are unspecialized portions of a cell.
C)   generally lack membranes.
D)   vary in number and type depending on cell function.
E)   are structural, but not functional parts of the cell.F) A) and B)
G) A) and C)

Question 6

The anticodon sequence GUA pairs with which of the following codons?

Accepted Answer

A)   CAT
B)   GUA
C)   CTU
D)   CAU
E)   CTTF) All of the above
G) A) and B)

Question 7

The shaft of a flagellum contains ________ microtubule doublets around its periphery.

Accepted Answer

A)   2
B)   2 + 9
C)   9
D)   2+7
E)   7F) A) and E)
G) B) and C)

Question 8

What is the only human cell with a flagellum?

Accepted Answer

A)   Columnar cell of upper respiratory tract
B)   Sperm cell
C)   Columnar cell of small intestine
D)   Red blood cell
E)   Macrophage (large, mobile white blood cell) F) C) and D)
G) B) and D)

Question 9

Endocytosis

Accepted Answer

A)   is movement of water through a selectively permeable membrane.
B)   is a process that requires a carrier molecule but does not use cellular energy.
C)   is the bulk uptake of material through the plasma membrane by vesicle formation.
D)   moves material out of the cell.
E)   ends cell functions.F) C) and E)
G) A) and D)

Question 10

The organelle that protects cells from the damaging effects of medications and toxins is the ________.

Accepted Answer

A)   ribosome
B)   microtubule
C)   secretory vesicle
D)   smooth endoplasmic reticulum
E)   mitochondriaF) D) and E)
G) A) and E)

Question 11

Cells that lack ribosomes cannot

Accepted Answer

A)   produce energy.
B)   eliminate wastes.
C)   engage in protein synthesis.
D)   package cellular products.
E)   ingest and phagocytize bacteria.F) C) and D)
G) B) and E)

Question 12

Which of the following would increase the maximum rate of facilitated diffusion?

Accepted Answer

A)   Increase the concentration gradient of the transported molecule to the saturation point
B)   Decrease the concentration gradient of the transported molecule
C)   Increase the concentration of the competitive molecules
D)   Increase ATP synthesis
E)   None of the choices are correct.F) A) and E)
G) C) and D)

Question 13

A cell with abundant peroxisomes would most likely be involved in

Accepted Answer

A)   secretion.
B)   storage of glycogen.
C)   detoxification activities.
D)   cellular communication.
E)   protein synthesis.F) B) and E)
G) B) and D)

Question 14

The bulk uptake of material by the formation of a vesicle is called ________.

Accepted Answer

A)   active transport
B)   diffusion
C)   endocytosis
D)   facilitated diffusion
E)   osmosisF) C) and E)
G) A) and C)

Question 15

A cell that produces many proteins for secretion would have large numbers of

Accepted Answer

A)   rough ER and Golgi apparatus.
B)   lysosomes and Golgi apparatus.
C)   Golgi apparatus and microvilli.
D)   ribosomes and centrioles.
E)   mitochondria and cilia.F) A) and D)
G) C) and D)

Question 16

The movement of a substance from an area of high concentration to an area of lower concentration is called ________.

Accepted Answer

A)   active transport
B)   diffusion
C)   endocytosis
D)   facilitated diffusion
E)   osmosisF) A) and B)
G) A) and C)

Question 17

-Red blood cells (RBCs)  have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "B"?

Accepted Answer

A)   Phagocytized
B)   Normal
C)   Coagulated
D)   Hemolyzed
E)   CrenatedF) A) and B)
G) C) and D)

Question 18

White blood cells digest other cells and so would be expected to

Accepted Answer

A)   have large numbers of lysosomes.
B)   possess cilia on their surfaces so they can move quickly.
C)   excrete excess salt as a result of all this eating.
D)   expel their nuclei to make room for all of the cells they eat.
E)   have mitochondria to energize them.F) B) and D)
G) A) and C)

Question 19

Which of these molecules is correctly matched with its method of movement through the plasma membrane?

Accepted Answer

A)   Lipid-soluble molecules - pass through membrane channels
B)   Small, water-soluble molecules (ions)  - dissolve in double phospholipid layer
C)   Large, water-soluble molecules - transported by carrier-mediated processes
D)   Glucose and amino acid molecules - pass through membrane channels
E)   All of the choices are correctly paired.F) C) and D)
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) None of the above
G) B) and E)

Exam 3: Cell Biology

The anticodon sequence GUA pairs with which of the following codons?

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Cells that lack ribosomes cannot

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Which of these molecules is correctly matched with its method of movement through the plasma membrane?

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What is the only human cell with a flagellum?

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Organelles

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

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The movement of a substance from an area of high concentration to an area of lower concentration is called ________.

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The plasma membrane

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Which of the following would increase the maximum rate of facilitated diffusion?

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________ pressure is the force required to prevent the movement of water by osmosis across a selectively permeable membrane.

Correct AnswerverifiedShow Answer

The bulk uptake of material by the formation of a vesicle is called ________.

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-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "B"?

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Translation

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Endocytosis

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A cell with abundant peroxisomes would most likely be involved in

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The shaft of a flagellum contains ________ microtubule doublets around its periphery.

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Which of the following activities is associated with lysosomes?

Correct AnswerverifiedShow Answer

White blood cells digest other cells and so would be expected to

Correct AnswerverifiedShow Answer

The organelle that protects cells from the damaging effects of medications and toxins is the ________.

Correct AnswerverifiedShow Answer

A cell that produces many proteins for secretion would have large numbers of

Correct AnswerverifiedShow Answer

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