Question 1

Which of the following is not a function of the plasma membrane?

Accepted Answer

A)  protect the internal aspect of the cell from substances outside the cell. 
B)  breaking down and digesting unwanted substances within the cell. 
C)  binding specific molecules arriving from outside of the cell. 
D)  selectively controlling the substances that enter or leave the cell. 
E)  moving specific substances from outside the cell to inside the cell. 
A)  protect the internal aspect of the cell from substances outside the cell. 
B)  breaking down and digesting unwanted substances within the cell. 
C)  binding specific molecules arriving from outside of the cell. 
D)  selectively controlling the substances that enter or leave the cell. 
E)  moving specific substances from outside the cell to inside the cell. B

Question 2

This is the diffusion of water molecules across a membrane.

Accepted Answer

osmosis

Question 3

The cytoskeletal elements which generate pseudopodia and contractile forces in conjunction with myosin are

Accepted Answer

A)  microtubules. 
B)  microfilaments. 
C)  intermediate filaments. 
D)  integral proteins. 
A)  microtubules. 
B)  microfilaments. 
C)  intermediate filaments. 
D)  integral proteins. B

Question 4

DNA is a long double-helix composed of four distinct nucleotides.

Accepted Answer

A) True 
 B)False

Question 5

The plasma membrane is composed of all of the following except

Accepted Answer

A)  glycoproteins. 
B)  tubulin protein. 
C)  cholesterol. 
D)  phospholipids. 
E)  integral proteins 
A)  glycoproteins. 
B)  tubulin protein. 
C)  cholesterol. 
D)  phospholipids. 
E)  integral proteins

Question 6

Which organelle is numerous in cells of the liver and kidney, organs involved in removing toxic substances from the body?

Accepted Answer

A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome 
A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome

Question 7

The longest arrays of microtubules that assemble from each centrosome during prophase form filaments called

Accepted Answer

A)  mitotic spindles. 
B)  kinetochores. 
C)  asters. 
D)  the nuclear envelope. 
E)  histones. 
A)  mitotic spindles. 
B)  kinetochores. 
C)  asters. 
D)  the nuclear envelope. 
E)  histones.

Question 8

Which organelle is primarily a sac of powerful digestive enzymes called acid hydrolases?

Accepted Answer

A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome 
A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome

Question 9

Use the diagram above to answer the following questions.
-Which letter indicates the chromatid?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 10

Ribosomes may be either free within the cytoplasm or bound to a membrane system known as the

Accepted Answer

A)  Golgi apparatus. 
B)  microtubule organizing center. 
C)  cytoskeleton. 
D)  rough endoplasmic reticulum. 
E)  plasma membrane. 
A)  Golgi apparatus. 
B)  microtubule organizing center. 
C)  cytoskeleton. 
D)  rough endoplasmic reticulum. 
E)  plasma membrane.

Question 11

Which organelle is characterized by folded inner membranes called cristae?

Accepted Answer

A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome 
A)  Golgi apparatus 
B)  lysosome 
C)  rough endoplasmic reticulum 
D)  mitochondria 
E)  peroxisome

Question 12

Hormones are secreted by

Accepted Answer

A)  phagocytosis. 
B)  pinocytosis. 
C)  exocytosis. 
D)  osmosis. 
E)  receptor-mediated endocytosis 
A)  phagocytosis. 
B)  pinocytosis. 
C)  exocytosis. 
D)  osmosis. 
E)  receptor-mediated endocytosis

Question 13

The process of cellular aging may involve all of the following except

Accepted Answer

A)  accumulated damage by free radicals. 
B)  decreased production of lysosomes. 
C)  excessive metabolic rate. 
D)  progressive shortening of telomeres. 
A)  accumulated damage by free radicals. 
B)  decreased production of lysosomes. 
C)  excessive metabolic rate. 
D)  progressive shortening of telomeres.

Question 14

Extended chromatin is tightly wound around histones.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is not a cytoskeleton element?

Accepted Answer

A)  microtubule 
B)  microfilament 
C)  intermediate filament 
D)  centriole 
E)  myosin 
A)  microtubule 
B)  microfilament 
C)  intermediate filament 
D)  centriole 
E)  myosin

Question 16

Cell aging may be related to production of what charged molecules produced by the mitochondria?

Accepted Answer

The answer of Cell aging may be related to production...

Question 17

The mitotic spindle forms from the

Accepted Answer

A)  nucleus. 
B)  Golgi apparatus. 
C)  centrosome matrix. 
D)  nucleolus. 
A)  nucleus. 
B)  Golgi apparatus. 
C)  centrosome matrix. 
D)  nucleolus.

Question 18

This network of rods running throughout the cytosol acts as a cell's "bones," "muscles," and "ligaments."

Accepted Answer

The answer of This network of rods running throughout the...

Question 19

Describe how cellular differentiation results in structural variation among cells in the human body.

Accepted Answer

Cellular differentiation is the result o

Question 20

Use the diagram above to answer the following questions.
-Which letter indicates the DNA molecule?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Exam 2: Cells: the Living Units

Which of the following is not a function of the plasma membrane?

This is the diffusion of water molecules across a membrane.

The cytoskeletal elements which generate pseudopodia and contractile forces in conjunction with myosin are

DNA is a long double-helix composed of four distinct nucleotides.

The plasma membrane is composed of all of the following except

Which organelle is numerous in cells of the liver and kidney, organs involved in removing toxic substances from the body?

The longest arrays of microtubules that assemble from each centrosome during prophase form filaments called

Which organelle is primarily a sac of powerful digestive enzymes called acid hydrolases?

Use the diagram above to answer the following questions. -Which letter indicates the chromatid?

Ribosomes may be either free within the cytoplasm or bound to a membrane system known as the

Which organelle is characterized by folded inner membranes called cristae?

Hormones are secreted by

The process of cellular aging may involve all of the following except

Extended chromatin is tightly wound around histones.

Which of the following is not a cytoskeleton element?

Cell aging may be related to production of what charged molecules produced by the mitochondria?

The mitotic spindle forms from the

This network of rods running throughout the cytosol acts as a cell's "bones," "muscles," and "ligaments."

Describe how cellular differentiation results in structural variation among cells in the human body.

Use the diagram above to answer the following questions. -Which letter indicates the DNA molecule?

The Human Body: an Orientation

Basic Embryology

Tissues

The Integumentary System

Bones and Skeletal Tissues

Bones, Part 1: the Axial Skeleton

Bones, Part 2: the Appendicular Skeleton

Joints

Skeletal Muscle Tissue

Muscles of the Body

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System and Visceral Sensory Neurons

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels

The Lymphatic and Immune Systems

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

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