Question 1

Cells of the small intestine and kidney tubules have extensions that increase their surface area called

Accepted Answer

A)   cilia.
B)   hairs.
C)   ruguae.
D)   microvilli.
E)   flagella.F) A) and B)
G) A) and E)

Question 2

The cytoplasm is made up of

Accepted Answer

A)   cytosol.
B)   cytogel.
C)   organelles.
D)   Both cytosol and organelles.
E)   Both cytogel and organelles.F) A) and B)
G) C) and D)

Question 3

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) A) and B)
G) B) and E)

Question 4

The intracellular digestive organelle of a cell is the

Accepted Answer

A)   lysosome.
B)   microtubule.
C)   lipochrome.
D)   rough endoplasmic reticulum.
E)   smooth endoplasmic reticulum.F) B) and E)
G) A) and E)

Question 5

A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being affected?

Accepted Answer

A)   nucleus
B)   centriole
C)   microtubule
D)   mitochondrion
E)   ribosomesF) None of the above
G) C) and E)

Question 6

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) D) and E)
G) A) and B)

Question 7

Communication between cells is essential to coordinate the activity of the trillions of cells that make up the human body. Which of the following is (are)  directly involved in carrying out communication between cells?

Accepted Answer

A)   lipid bilayer of the plasma membrane
B)   receptor proteins of the plasma membrane
C)   chemical signal molecules released by cells
D)   mitochondria
E)   both receptor proteins of the plasma membrane and chemical signal molecules released by cellsF) B) and D)
G) B) and C)

Question 8

Which type of transport proteins use cell energy to move molecules across the plasma membrane?

Accepted Answer

A)   cadherins
B)   ligand-gated ion channels
C)   ATP-powered pumps
D)   leak-ion channelsE) B) and C)
F) C) and D)

Question 9

What type of membrane proteins form a passageway through the plasma membrane?

Accepted Answer

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

Question 10

What organelles are small vacuoles containing oxidative enzymes?

Accepted Answer

A)   endoplasmic reticulum
B)   Golgi apparatus
C)   nucleolus
D)   peroxisomes
E)   flagellumF) C) and D)
G) A) and E)

Question 11

At the base of each cilium is a structure called the

Accepted Answer

A)   kinetochore.
B)   basal body.
C)   dynein arm.
D)   centrosome.
E)   None of these choices is correct.F) D) and E)
G) All of the above

Question 12

What is a large, active phagocytic cell?

Accepted Answer

A)   columnar cells of upper respiratory tract
B)   spermatozoa
C)   columnar cells of small intestines
D)   red blood cells
E)   macrophage (large, mobile white blood cell) F) All of the above
G) A) and C)

Question 13

Which of the following organelles function in the destruction of nonfunctional organelles?

Accepted Answer

A)   endoplasmic reticulum
B)   centrioles
C)   basal bodies
D)   lysosomes
E)   mitochondriaF) A) and B)
G) A) and C)

Question 14

Transcription

Accepted Answer

A)   requires three types of RNA.
B)   synthesizes RNA from DNA.
C)   occurs at the ribosomes.
D)   copies information from mRNA to tRNA.
E)   synthesizes DNA from RNA.F) B) and E)
G) B) and C)

Question 15

Which of the following is NOT associated with interphase?

Accepted Answer

A)   The centrioles duplicate.
B)   The cell grows.
C)   The cell does what it is designed to do.
D)   The cell does nothing but rest.
E)   The DNA replicates.F) None of the above
G) C) and D)

Question 16

Pinocytosis

Accepted Answer

A)   is a form of exocytosis.
B)   involves ingestion of liquids rather than particles.
C)   does not require ATP.
D)   forms vesicles only when large amounts of material are being transported.
E)   does not require the formation of vesicles.F) C) and D)
G) A) and B)

Question 17

Absence of a cytoskeleton might affect

Accepted Answer

A)   cell shape.
B)   the number of channel proteins in the cell membrane.
C)   the ability of the cell to generate energy.
D)   vesicle formation.
E)   membrane transport.F) C) and D)
G) C) and E)

Question 18

The structural and functional unit of all living organisms is the

Accepted Answer

A)   ribosome.
B)   cell.
C)   organ.
D)   organelle.
E)   plasma membrane.F) A) and C)
G) C) and E)

Question 19

What type of cells are covered with microvilli for increased absorption?

Accepted Answer

A)   columnar cells of upper respiratory tract
B)   spermatozoa
C)   columnar cells of small intestines
D)   red blood cells
E)   macrophage (large, mobile white blood cell) F) A) and C)
G) C) and E)

Question 20

In prophase

Accepted Answer

A)   the chromosomes condense, shorten, and thicken.
B)   the spindle fibers disappear.
C)   the chromosomes replicate.
D)   cytokinesis occurs.
E)   DNA is synthesized.F) D) and E)
G) A) and D)

Exam 3: Cell Biology

What type of membrane proteins form a passageway through the plasma membrane?

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Communication between cells is essential to coordinate the activity of the trillions of cells that make up the human body. Which of the following is (are) directly involved in carrying out communication between cells?

Correct AnswerverifiedShow Answer

What is a large, active phagocytic cell?

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Cells that lack ribosomes cannot

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What organelles are small vacuoles containing oxidative enzymes?

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Which type of transport proteins use cell energy to move molecules across the plasma membrane?

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The plasma membrane

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Transcription

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Which of the following is NOT associated with interphase?

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The intracellular digestive organelle of a cell is the

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Pinocytosis

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What type of cells are covered with microvilli for increased absorption?

Correct AnswerverifiedShow Answer

Absence of a cytoskeleton might affect

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The structural and functional unit of all living organisms is the

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A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being affected?

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Which of the following organelles function in the destruction of nonfunctional organelles?

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At the base of each cilium is a structure called the

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The cytoplasm is made up of

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In prophase

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Cells of the small intestine and kidney tubules have extensions that increase their surface area called

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