Question 1

The release of neurotransmitter from a neuron is an example of

Accepted Answer

A)  endocytosis and is a form of passive transport.
B)  receptor-mediated endocytosis and it requires expenditure of ATP.
C)  exocytosis and is a form of passive transport.
D)  exocytosis and it requires expenditure of ATP.
E)  pinocytosis and it is a form of primary active transport.F) A) and C)
G) B) and E)

Question 2

Some of the largest spherical cells in the human body (for example,oocytes) have a diameter of approximately

Accepted Answer

A)  1 nm.
B)  1 cm.
C)  1  μ\muμ m.
D)  100 nm.
E)  100  μ\muμ m. F) None of the above
G) A) and D)

Question 3

The centrosome is considered to be an inclusion.

Accepted Answer

A) True 
 B)False

Question 4

A cell-mediated process that transports large molecules across the plasma membrane and out of the cell is called ________________.

Accepted Answer

The answer of A cell-mediated process that transports large molecules...

Question 5

Which of the following choices describes three general functions cells must perform

Accepted Answer

A)  Maintain shape,obtain nutrients,and dispose of wastes
B)  Respond to all hormones,maintain a waterproof barrier,give rise to gametes
C)  Grow until dividing,store complex carbohydrates,generate antibodies
D)  Take up oxygen,prevent water entry,undergo mitosis frequentlyE) A) and B)
F) A) and C)

Question 6

Which are the smallest components of the cytoskeleton

Accepted Answer

A)  Microtubules
B)  Microfilaments
C)  Intermediate filaments
D)  Centrosomes
E)  CentriolesF) A) and D)
G) All of the above

Question 7

_____________ is the division of the cytoplasm during cell division.

Accepted Answer

The answer of _____________ is the division of the cytoplasm...

Question 8

The _______ is responsible for forming the outer,limiting barrier of a cell.

Accepted Answer

A)  peroxisome
B)  ribosome
C)  mitochondrion
D)  plasma membrane
E)  centrosomeF) A) and B)
G) All of the above

Question 9

When a skin wound is healing,cell contact on all sides is a strong stimulus for cell division.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following factors influence cell membrane permeability

Accepted Answer

A)  Phospholipid composition of the membrane
B)  Ionic charge along the membrane
C)  Presence or absence of transport proteins
D)  Molecule size
E)  All of the choices are correct.F) D) and E)
G) None of the above

Question 11

The largest internal cellular structure is known as the ______ and is the cell's control center.

Accepted Answer

A)  Golgi apparatus
B)  nucleus
C)  lysosome
D)  cytosol
E)  smooth ERF) None of the above
G) All of the above

Question 12

The function of the nucleolus is to make

Accepted Answer

A)  DNA molecules.
B)  the subunits of ribosomes.
C)  the secretions that will be packaged by the Golgi apparatus.
D)  histones.
E)  the deoxyribose sugar.F) B) and D)
G) All of the above

Question 13

Which is not characteristic of a cell undergoing apoptosis

Accepted Answer

A)  Chromatin degradation
B)  Shrinkage in volume
C)  Abnormal development in organelle structure
D)  Abnormal development in plasma membrane structure
E)  No exceptions;all of these are characteristic of a cell undergoing apoptosis.F) A) and E)
G) A) and D)

Question 14

Describe the process of transcription.What does it produce
 Where in the cell does it occur
 What molecules are involved
 Explain what happens in each of the following stages: initiation,elongation,termination,and splicing.

Accepted Answer

The answer of Describe the process of transcription.What does it...

Question 15

The pressure that must be exerted onto a solution in order to prevent water from diffusing into that solution through a semipermeable membrane is called ___________ pressure.

Accepted Answer

The answer of The pressure that must be exerted onto...

Question 16

The sodium-potassium pump moves ions against their concentration gradients and helps maintain an electrochemical gradient across the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 17

The nuclear envelope consists primarily of

Accepted Answer

A)  a double helix of DNA.
B)  ribosomal subunits.
C)  two phospholipid bilayers.
D)  messenger RNA.E) A) and B)
F) None of the above

Question 18

Peroxisomes are membrane-bound organelles.

Accepted Answer

A) True 
 B)False

Question 19

A single mRNA molecule can be read by more than one ribosome simultaneously.

Accepted Answer

A) True 
 B)False

Question 20

The movement of glucose across a plasma membrane is achieved by

Accepted Answer

A)  ion pumps.
B)  receptor-mediated exocytosis.
C)  osmosis.
D)  facilitated diffusion.
E)  phagocytosis.F) All of the above
G) A) and E)

Exam 4: Biology of the Cell

The nuclear envelope consists primarily of

Correct AnswerverifiedShow Answer

A cell-mediated process that transports large molecules across the plasma membrane and out of the cell is called ________________.

Correct AnswerverifiedShow Answer

The movement of glucose across a plasma membrane is achieved by

Correct AnswerverifiedShow Answer

Which are the smallest components of the cytoskeleton

Correct AnswerverifiedShow Answer

Describe the process of transcription.What does it produce Where in the cell does it occur What molecules are involved Explain what happens in each of the following stages: initiation,elongation,termination,and splicing.

Correct AnswerverifiedShow Answer

The pressure that must be exerted onto a solution in order to prevent water from diffusing into that solution through a semipermeable membrane is called ___________ pressure.

Correct AnswerverifiedShow Answer

Which of the following choices describes three general functions cells must perform

Correct AnswerverifiedShow Answer

The sodium-potassium pump moves ions against their concentration gradients and helps maintain an electrochemical gradient across the plasma membrane.

Correct AnswerverifiedShow Answer

Which is not characteristic of a cell undergoing apoptosis

Correct AnswerverifiedShow Answer

Peroxisomes are membrane-bound organelles.

Correct AnswerverifiedShow Answer

Which of the following factors influence cell membrane permeability

Correct AnswerverifiedShow Answer

The _______ is responsible for forming the outer,limiting barrier of a cell.

Correct AnswerverifiedShow Answer

Some of the largest spherical cells in the human body (for example,oocytes) have a diameter of approximately

Correct AnswerverifiedShow Answer

_____________ is the division of the cytoplasm during cell division.

Correct AnswerverifiedShow Answer

When a skin wound is healing,cell contact on all sides is a strong stimulus for cell division.

Correct AnswerverifiedShow Answer

The release of neurotransmitter from a neuron is an example of

Correct AnswerverifiedShow Answer

The centrosome is considered to be an inclusion.

Correct AnswerverifiedShow Answer

The largest internal cellular structure is known as the ______ and is the cell's control center.

Correct AnswerverifiedShow Answer

The function of the nucleolus is to make

Correct AnswerverifiedShow Answer

A single mRNA molecule can be read by more than one ribosome simultaneously.

Correct AnswerverifiedShow Answer

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