Question 1

In the process of diffusion, net movement of substances is always from a region

Accepted Answer

A)   outside the cell to a region inside the cell.
B)   inside the cell to a region outside the cell.
C)   of lower concentration to a region of higher concentration.
D)   of higher concentration to a region of lower concentration.
E)   None of these choices are correct.

Question 2

In order to study in detail the anatomy of internal cell parts, it would be best to use

Accepted Answer

A)   x-rays.
B)   flashlights.
C)   a transmission electron microscope (TEM) .
D)   tissue cultures.
E)   a scanning electron microscope (SEM) .

Question 3

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

Accepted Answer

A)   hypotonic solution
B)   hypertonic solution
C)   isotonic solution
D)   hemolyzed
E)   crenated

Question 4

Experimental manipulation to increase the energy output of the cell might include

Accepted Answer

A)   rupturing the lysosomes in the cell.
B)   increasing the number of mitochondria.
C)   decreasing nuclear size.
D)   removing some of the ribosomes.
E)   increasing protein synthesis.

Question 5

Arrange the following events of exocytosis in the correct sequence: (1)  vesicle membrane fuses with plasma membrane
(2)  secretory vesicles migrate to plasma membrane
(3)  vesicle contents are expelled from cell
(4)  secretions accumulate within secretory vesicles

Accepted Answer

A)   2, 1, 4, 3
B)   1, 4, 2, 3
C)   3, 1, 4, 2
D)   4, 2, 1, 3
E)   1, 2, 3, 4

Question 6

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

Accepted Answer

A)   membrane channel protein
B)   phospholipid bilayer
C)   internal membrane surface
D)   peripheral protein
E)   integral protein

Question 7

What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Accepted Answer

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

Question 8

Determine the sequence of the following events in a cell after exposure of the cell to a chemical signal. (1)  increased synthesis of a protein
(2)  the chemical signal combined with a cytoplasmic receptor
(3)  an increase in the nuclear concentration of the chemical
(4)  an increase in mRNA synthesis
(5)  genes are activated

Accepted Answer

A)   2, 1, 3, 5, 4
B)   2, 4, 5, 3, 2
C)   2, 3, 5, 4, 1
D)   2, 3, 4, 5, 1
E)   1, 2, 3, 4, 5

Question 9

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

Accepted Answer

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

Question 10

A cell uses centrioles in the process of

Accepted Answer

A)   cell division.
B)   energy generation.
C)   protein synthesis.
D)   RNA replication.
E)   nuclear centering.

Question 11

Which of the following is NOT true of a transmission electron microscope (TEM) ?

Accepted Answer

A)   The limit of resolution is about 0.1 μ\muμ m.
B)   Electrons are passed through the specimen.
C)   Gives the clearest three-dimensional images.
D)   The specimen must be fixed in plastic.
E)   The electron beam is focused with electromagnets.

Question 12

Which of the following sequences is correct?

Accepted Answer

A)   translation →\rightarrow→  protein synthesis →\rightarrow→  transcription
B)   transcription →\rightarrow→  translation →\rightarrow→  protein synthesis
C)   transcription →\rightarrow→  protein synthesis →\rightarrow→  translation
D)   translation →\rightarrow→  transcription →\rightarrow→  protein synthesis
E)   protein synthesis →\rightarrow→  translation →\rightarrow→  transcription

Question 13

The predominant lipid in the cell membrane is a

Accepted Answer

A)   phospholipid.
B)   glycolipid.
C)   cholesterol.
D)   prostaglandin.
E)   triglyceride.

Question 14

Portions of pre-mRNA that do NOT code for parts of a protein are called

Accepted Answer

A)   introns.
B)   start codons.
C)   exons.
D)   stop codons.
E)   All of these except exons do not code for parts of a protein.

Question 15

The organelles that are the source of the spindle fibers are the

Accepted Answer

A)   nucleus.
B)   ribosomes.
C)   lysosomes.
D)   mitochondria.
E)   centrioles.

Question 16

What organelles produce most of the cell's energy?

Accepted Answer

A)   nucleus
B)   ribosomes
C)   lysosomes
D)   mitochondria
E)   centrioles

Question 17

A runner produced hypotonic sweat while running a marathon in hot weather. After the race, he drank large volumes of water. As a result of the water intake, his body cells will

Accepted Answer

A)   shrink.
B)   swell.
C)   crenate.
D)   shrivel.
E)   not change.

Question 18

Arrange the following in correct sequence: (1)  protein moves through ER and then carried in vesicles to Golgi apparatus
(2)  vesicle pinches off from the Golgi apparatus and carries product to plasma membrane
(3)  Golgi apparatus modifies protein and then packages them into vesicles
(4)  protein made by ribosomes on rough ER

Accepted Answer

A)   1, 2, 3, 4
B)   4, 1, 3, 2
C)   2, 3, 1, 4
D)   3, 2, 4, 1
E)   4, 3, 2, 1

Question 19

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

Accepted Answer

A)   hypotonic solution
B)   hypertonic solution
C)   isotonic solution
D)   hemolyzed
E)   crenated

Question 20

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

Accepted Answer

A)   CAT
B)   GUA
C)   CTU
D)   CAU
E)   CTT

Exam 3: Cell Biology

In the process of diffusion, net movement of substances is always from a region

Correct Answer
verified

Arrange the following events of exocytosis in the correct sequence: (1) vesicle membrane fuses with plasma membrane (2) secretory vesicles migrate to plasma membrane (3) vesicle contents are expelled from cell (4) secretions accumulate within secretory vesicles

Correct Answer
verified

Which of the following is NOT true of a transmission electron microscope (TEM) ?

Correct Answer
verified

What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Correct Answer
verified

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

Correct Answer
verified

What organelles produce most of the cell's energy?

Correct Answer
verified

A cell uses centrioles in the process of

Correct Answer
verified

Which of the following sequences is correct?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

A runner produced hypotonic sweat while running a marathon in hot weather. After the race, he drank large volumes of water. As a result of the water intake, his body cells will

Correct Answer
verified

The organelles that are the source of the spindle fibers are the

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Portions of pre-mRNA that do NOT code for parts of a protein are called

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Experimental manipulation to increase the energy output of the cell might include

Correct Answer
verified

In order to study in detail the anatomy of internal cell parts, it would be best to use

Correct Answer
verified

The predominant lipid in the cell membrane is a

Correct Answer
verified

Exam 3: Cell Biology

In the process of diffusion, net movement of substances is always from a region

Correct AnswerverifiedShow Answer

Arrange the following events of exocytosis in the correct sequence: (1) vesicle membrane fuses with plasma membrane (2) secretory vesicles migrate to plasma membrane (3) vesicle contents are expelled from cell (4) secretions accumulate within secretory vesicles

Correct AnswerverifiedShow Answer

Which of the following is NOT true of a transmission electron microscope (TEM) ?

Correct AnswerverifiedShow Answer

What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What organelles produce most of the cell's energy?

Correct AnswerverifiedShow Answer

A cell uses centrioles in the process of

Correct AnswerverifiedShow Answer

Which of the following sequences is correct?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A runner produced hypotonic sweat while running a marathon in hot weather. After the race, he drank large volumes of water. As a result of the water intake, his body cells will

Correct AnswerverifiedShow Answer

The organelles that are the source of the spindle fibers are the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Portions of pre-mRNA that do NOT code for parts of a protein are called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Experimental manipulation to increase the energy output of the cell might include

Correct AnswerverifiedShow Answer

In order to study in detail the anatomy of internal cell parts, it would be best to use

Correct AnswerverifiedShow Answer

The predominant lipid in the cell membrane is a

Correct AnswerverifiedShow Answer

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