Question 1

Ribosomes are organelles responsible for

Accepted Answer

A)  packaging "cell products" for export.
B)  energy production.
C)  cell movement and cell shape.
D)  protein synthesis.
E)  manufacturing lipids.F) A) and B)
G) A) and C)

Question 2

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of

Accepted Answer

A)  osmosis.
B)  active transport.
C)  bulk transport.
D)  facilitated diffusion.
E)  diffusion.F) B) and E)
G) A) and E)

Question 3

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

Accepted Answer

A)  sugar
B)  sodium
C)  oxygen
D)  urea
E)  waterF) C) and E)
G) A) and D)

Question 4

Which of the following terms does NOT relate to the mitochondria?

Accepted Answer

A)  ATP
B)  cristae
C)  self-replicating
D)  outer and inner membranes
E)  vitamin A storageF) A) and C)
G) A) and B)

Question 5

A mitochondrial disease is passed to offspring via the father.

Accepted Answer

A)  True
B)  FalseC) A) and B)
D) undefined

Question 6

Which transport process requires a carrier molecule but does not use cellular energy?

Accepted Answer

A)  diffusion
B)  facilitated diffusion
C)  osmosis
D)  active transport
E)  endocytosisF) A) and E)
G) C) and D)

Question 7

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

Question 8

What is mediated transport?

Accepted Answer

A)   The movement of molecules across a membrane by means of a protein carrier.
B)   The process of peptide synthesis on the surface of the ribosome.
C)   The ability of molecules to pass through the nuclear membrane.
D)   The movement of vesicles by intermediate filaments.E) All of the above
F) B) and D)

Question 9

Three adjacent nucleotides in mRNA are called a

Accepted Answer

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

Question 10

What organelle contains the chromosomes?

Accepted Answer

A)  centrioles
B)  ribosomes
C)  lysosomes
D)  nucleus
E)  mitochondriaF) A) and B)
G) B) and E)

Question 11

A protein that is converted to an active enzyme is a

Accepted Answer

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

Question 12

All of the chemical reactions within a cell are known as cell

Accepted Answer

A)  communication.
B)  inheritance.
C)  metabolism.
D)  movement.
E)  reproduction.F) A) and B)
G) B) and C)

Question 13

Which of the following is CORRECTLY matched with its function?

Accepted Answer

A)  peripheral proteins - penetrate the lipid bilayer from one surface to the other
B)  nongated ion channels - are always closed
C)  receptor proteins - attach to ligand molecules
D)  channel proteins - are part of an intercellular communication system
E)  marker molecules - are primarily steroidsF) A) and B)
G) B) and C)

Question 14

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)  increased ATP synthesis
E)  None of these choices is correct.F) D) and E)
G) A) and E)

Question 15

The transfer of information from DNA to messenger RNA (mRNA) is known as

Accepted Answer

A)  transcription.
B)  translocation.
C)  translation.
D)  transduction.
E)  transmutation.F) A) and C)
G) C) and E)

Question 16

What is a large,active phagocytic cell?

Accepted Answer

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

Question 17

The movement of a substance from an area of high concentration to an area of less concentration is called

Accepted Answer

A)  endocytosis.
B)  osmosis.
C)  diffusion.
D)  facilitated diffusion.
E)  active transport.F) All of the above
G) D) and E)

Question 18

In the nucleus,DNA is wrapped with proteins.This complex is called

Accepted Answer

A)  chromatin.
B)  DNA particles.
C)  nucleoli.
D)  a DNA wrap.
E)  cytoplasmic organelles.F) B) and E)
G) C) and D)

Question 19

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

Accepted Answer

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

Question 20

-What structure does "E" represent on the diagram of the plasma membrane?

Accepted Answer

A)  membrane channel protein
B)  receptor protein
C)  internal membrane surface
D)  peripheral protein
E)  phospholipid bilayerF) A) and E)
G) B) and E)

Exam 3: Cell Biology

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

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All of the chemical reactions within a cell are known as cell

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Which transport process requires a carrier molecule but does not use cellular energy?

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

A protein that is converted to an active enzyme is a

Correct AnswerverifiedShow Answer

In the nucleus,DNA is wrapped with proteins.This complex is called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The movement of a substance from an area of high concentration to an area of less concentration is called

Correct AnswerverifiedShow Answer

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of

Correct AnswerverifiedShow Answer

What organelle contains the chromosomes?

Correct AnswerverifiedShow Answer

-What structure does "E" represent on the diagram of the plasma membrane?

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What is a large,active phagocytic cell?

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Which of the following terms does NOT relate to the mitochondria?

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Which of the following is CORRECTLY matched with its function?

Correct AnswerverifiedShow Answer

A mitochondrial disease is passed to offspring via the father.

Correct AnswerverifiedShow Answer

Three adjacent nucleotides in mRNA are called a

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The transfer of information from DNA to messenger RNA (mRNA) is known as

Correct AnswerverifiedShow Answer

What is mediated transport?

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Ribosomes are organelles responsible for

Correct AnswerverifiedShow Answer

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