Question 1

Which of the following correctly matches a nuclear structure with its function?

Accepted Answer

A)   nuclear pores - allow molecules to move between the nucleus and cytoplasm.
B)   chromatin - fluid portion of the nucleus
C)   chromosomes - contains RNA and histones
D)   nuclear envelope - contains the nucleolar organizer
E)   nucleolus - DNA synthesisF) D) and E)
G) B) and C)

Question 2

Which of the following is an organelle of locomotion?

Accepted Answer

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

Question 3

Which of the following is NOT a characteristic function of a cell?

Accepted Answer

A)   reproduction and inheritance
B)   communication
C)   movement
D)   metabolism and energy use
E)   synthesisF) A) and B)
G) A) and C)

Question 4

Endoplasmic reticulum with ribosomes attached to it is called

Accepted Answer

A)   nodular ER.
B)   smooth ER.
C)   dendritic ER.
D)   rough ER.
E)   bumpy ER.F) C) and E)
G) B) and C)

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)   mitochondrion
C)   centriole
D)   ribosomes
E)   microtubuleF) B) and E)
G) B) and D)

Question 6

Genes that play a role in the regulation of mitosis are called

Accepted Answer

A)   proto-oncogenes.
B)   apoptogenes.
C)   oncogenes.
D)   mutagens.
E)   basal cells.F) A) and D)
G) None of the above

Question 7

Posttranscriptional processing is the modification of

Accepted Answer

A)   DNA.
B)   proteins to form pro-proteins.
C)   mRNA to form tRNA.
D)   exons to form introns.
E)   pre-mRNA to form functional mRNA.F) A) and B)
G) A) and C)

Question 8

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

Accepted Answer

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

Question 9

Membrane proteins that extend into the lipid bilayer are called

Accepted Answer

A)   integral proteins.
B)   lipoproteins.
C)   peripheral proteins.
D)   glycoproteins.
E)   extrinsic proteins.F) A) and E)
G) C) and D)

Question 10

DNA replication results in two new DNA molecules. Each of these new molecules

Accepted Answer

A)   has one strand of nucleotides from the parent DNA and one newly synthesized strand of nucleotides.
B)   has two newly synthesized strands of nucleotides.
C)   has a single strand of nucleotides.
D)   are incomplete copies of the original.
E)   has two strands of nucleotides from the parent.F) B) and C)
G) B) and E)

Question 11

Cytokinesis is completed at the end of this phase.

Accepted Answer

A)   interphase
B)   prophase
C)   metaphase
D)   anaphase
E)   telophaseF) C) and D)
G) A) and D)

Question 12

Osmosis is the diffusion of _____ across a selectively permeable membrane.

Accepted Answer

A)   sugar
B)   sodium
C)   oxygen
D)   urea
E)   waterF) All of the above
G) A) and C)

Question 13

Chromatin condenses and nucleoli disappear during

Accepted Answer

A)   prophase.
B)   interphase.
C)   telophase.
D)   metaphase.
E)   anaphase.F) C) and D)
G) None of the above

Question 14

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

Accepted Answer

A)   basal bodies
B)   centrioles
C)   mitochondria
D)   endoplasmic reticulum
E)   lysosomesF) A) and D)
G) A) and B)

Question 15

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

Question 16

If all of the peroxisomes in a cell were suddenly removed, how would this affect its immediate activity and function?

Accepted Answer

A)   The cell would no longer be able to break down glucose.
B)   The cell would be unable to perform transcription.
C)   The cell would no longer be able to break down fatty acids, hydrogen peroxide, and amino acids.
D)   The cell would be unable to produce proteins.
E)   The cell would no longer be able to break down proteins and nucleic acids.F) A) and D)
G) B) and E)

Question 17

In DNA replication,

Accepted Answer

A)   new nucleotides are added at the 5' end of the growing DNA strand.
B)   only introns are replicated.
C)   DNA polymerase splices the short segments of the lagging strand together.
D)   the two existing strands are not used as templates.
E)   the leading strand is formed as a continuous strand.F) A) and B)
G) None of the above

Question 18

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

Accepted Answer

A)   cadherins
B)   leak-ion channels
C)   ATP-powered pumps
D)   ligand-gated ion channelsE) B) and C)
F) None of the above

Question 19

What organelles produce most of the cell's energy?

Accepted Answer

A)   nucleus
B)   lysosomes
C)   centrioles
D)   mitochondria
E)   ribosomesF) B) and E)
G) A) and B)

Question 20

If you compare a cell with a manufacturing plant that exports goods, the cell's _____ could be compared to the manufacturing plant's shipping department.

Accepted Answer

A)   nucleus
B)   lysosome
C)   Golgi apparatus
D)   endoplasmic reticulum
E)   ribosomeF) D) and E)
G) B) and D)

Exam 3: Cell Biology

In DNA replication,

Correct AnswerverifiedShow Answer

Osmosis is the diffusion of _____ across a selectively permeable membrane.

Correct AnswerverifiedShow Answer

If all of the peroxisomes in a cell were suddenly removed, how would this affect its immediate activity and function?

Correct AnswerverifiedShow Answer

Genes that play a role in the regulation of mitosis are called

Correct AnswerverifiedShow Answer

What organelles produce most of the cell's energy?

Correct AnswerverifiedShow Answer

Chromatin condenses and nucleoli disappear during

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic function of a cell?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Cytokinesis is completed at the end of this phase.

Correct AnswerverifiedShow Answer

Membrane proteins that extend into the lipid bilayer are called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following correctly matches a nuclear structure with its function?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Posttranscriptional processing is the modification of

Correct AnswerverifiedShow Answer

DNA replication results in two new DNA molecules. Each of these new molecules

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If you compare a cell with a manufacturing plant that exports goods, the cell's _____ could be compared to the manufacturing plant's shipping department.

Correct AnswerverifiedShow Answer

Which of the following is an organelle of locomotion?

Correct AnswerverifiedShow Answer

Endoplasmic reticulum with ribosomes attached to it is called

Correct AnswerverifiedShow Answer

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