Question 1

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

Accepted Answer

A)  The limit of resolution is about 0.1$\mu$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. 
A)  The limit of resolution is about 0.1$\mu$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 2

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 
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 3

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 
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 4

What organelles produce most of the cell's energy?

Accepted Answer

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

Question 5

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. 
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 6

The predominant lipid in the cell membrane is a

Accepted Answer

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

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

Question 8

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

Question 9

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

Question 10

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

Accepted Answer

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

Question 11

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

Question 12

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 
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 13

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

Accepted Answer

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

Question 14

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

Question 15

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. 
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 16

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

Question 17

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 
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 18

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

Question 19

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

Question 20

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. 
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.

Exam 3: Cell Biology

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

Which of the following sequences is correct?

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

What organelles produce most of the cell's energy?

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

The predominant lipid in the cell membrane is a

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

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

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

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

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

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

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

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

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

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

A cell uses centrioles in the process of

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

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

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