Question 1

The light microscope has a resolving power of

Accepted Answer

A)  0.1 mm. 
B)  0.01 mm. 
C)  0.0001 mm. 
D)  0.000001 mm. 
E)  0.00000001 mm. 
A)  0.1 mm. 
B)  0.01 mm. 
C)  0.0001 mm. 
D)  0.000001 mm. 
E)  0.00000001 mm.

Question 2

Why is glycolysis believed to have evolved early in the history of life?

Accepted Answer

A)  It breaks down sugar. 
B)  It produces energy. 
C)  It is present in most every type of cell. 
D)  It does not require oxygen. 
E)  It splits a 6-carbon molecule into two 3-carbon molecules. 
A)  It breaks down sugar. 
B)  It produces energy. 
C)  It is present in most every type of cell. 
D)  It does not require oxygen. 
E)  It splits a 6-carbon molecule into two 3-carbon molecules.

Question 3

The plasma membrane contains how many layers of phospholipids?

Accepted Answer

A)  one 
B)  two 
C)  four 
D)  eight 
E)  sixteen 
A)  one 
B)  two 
C)  four 
D)  eight 
E)  sixteen

Question 4

Often when a person is admitted to the hospital, an intravenous solution of normal saline is begun. Since this does not harm the patient, what is the tonicity of normal saline compared to your blood?

Accepted Answer

A)  hypertonic 
B)  isotonic 
C)  hypotonic 
D)  pretonic 
E)  osmotonic 
A)  hypertonic 
B)  isotonic 
C)  hypotonic 
D)  pretonic 
E)  osmotonic

Question 5

Explain what occurs during endocytosis.

Accepted Answer

During endocytosis a portion of the plas

Question 6

The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a

Accepted Answer

A)  plasma membrane. 
B)  Sanger enclosure. 
C)  hydrophobic membrane. 
D)  dialysis membrane. 
E)  mosaic membrane. 
A)  plasma membrane. 
B)  Sanger enclosure. 
C)  hydrophobic membrane. 
D)  dialysis membrane. 
E)  mosaic membrane.

Question 7

Which of the following does not utilize active transport?

Accepted Answer

A)  movement of oxygen from the lungs into the blood 
B)  concentrating iodine ions in the thyroid gland 
C)  absorbing sugar in the gut 
D)  water homeostasis in the kidneys 
E)  movement of sodium and potassium in nerve cells 
A)  movement of oxygen from the lungs into the blood 
B)  concentrating iodine ions in the thyroid gland 
C)  absorbing sugar in the gut 
D)  water homeostasis in the kidneys 
E)  movement of sodium and potassium in nerve cells

Question 8

Which of the following would be a way of finishing this hypothesis about the function of the Golgi apparatus? If the Golgi apparatus is involved in packaging products for secretion, then

Accepted Answer

A)  vesicles must travel from the Golgi to the cell surface. 
B)  vesicles must travel from the RER and SER to the Golgi apparatus. 
C)  the Golgi apparatus must be part of the endomembrane system. 
D)  the Golgi apparatus must consist of 3 to 20 slightly curved sacs. 
E)  the Golgi apparatus would contain proteins. 
A)  vesicles must travel from the Golgi to the cell surface. 
B)  vesicles must travel from the RER and SER to the Golgi apparatus. 
C)  the Golgi apparatus must be part of the endomembrane system. 
D)  the Golgi apparatus must consist of 3 to 20 slightly curved sacs. 
E)  the Golgi apparatus would contain proteins.

Question 9

The grainy-looking substance inside the nucleus is composed of

Accepted Answer

A)  phospholipids. 
B)  DNA and proteins. 
C)  nucleoplasm. 
D)  ribosomes. 
E)  mitochondria. 
A)  phospholipids. 
B)  DNA and proteins. 
C)  nucleoplasm. 
D)  ribosomes. 
E)  mitochondria.

Question 10

If a cell lacked ribosomes, it would not be able to

Accepted Answer

A)  form a spindle apparatus. 
B)  synthesize proteins. 
C)  respire oxidatively. 
D)  break down fats. 
E)  produce ATP. 
A)  form a spindle apparatus. 
B)  synthesize proteins. 
C)  respire oxidatively. 
D)  break down fats. 
E)  produce ATP.

Question 11

Since all organisms carry on cellular respiration, all living cells must contain mitochondria.

Accepted Answer

A) True 
 B)False

Question 12

In the sodium potassium pump, sodium and potassium are both pumped out of the cell via active transport.

Accepted Answer

A) True 
 B)False

Question 13

Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods. This process is known as

Accepted Answer

A)  pinocytosis. 
B)  phagocytosis. 
C)  exocytosis. 
D)  facilitated transport. 
E)  osmosis. 
A)  pinocytosis. 
B)  phagocytosis. 
C)  exocytosis. 
D)  facilitated transport. 
E)  osmosis.

Question 14

In a metabolic pathway, substrate Z is broken down to form product Y and X. Y is further broken down into products V and W. How many enzymes are required for this metabolic pathway?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 15

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

Accepted Answer

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

Question 16

During exocytosis, the phospholipids present in the vesicle membrane will end up in the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 17

How large is a nuclear pore in the nuclear envelope?

Accepted Answer

A)  larger than a ribosome 
B)  larger than the Golgi apparatus 
C)  larger than the endoplasmic reticulum 
D)  smaller than a ribosome 
E)  smaller than a protein 
A)  larger than a ribosome 
B)  larger than the Golgi apparatus 
C)  larger than the endoplasmic reticulum 
D)  smaller than a ribosome 
E)  smaller than a protein

Question 18

In the fluid-mosaic model of the plasma membrane, the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.

Accepted Answer

A)  hydrophobic, hydrophilic 
B)  hydrophilic, hydrophobic 
C)  autotrophic, heterotrophic 
D)  heterotrophic, autotrophic 
E)  ectothermic, endothermic 
A)  hydrophobic, hydrophilic 
B)  hydrophilic, hydrophobic 
C)  autotrophic, heterotrophic 
D)  heterotrophic, autotrophic 
E)  ectothermic, endothermic

Question 19

Cilia are composed of microtubules while flagella are composed of actin filaments.

Accepted Answer

A) True 
 B)False

Question 20

A malfunction with the microtubules would interfere with mitosis and meiosis.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

The light microscope has a resolving power of

Why is glycolysis believed to have evolved early in the history of life?

The plasma membrane contains how many layers of phospholipids?

Often when a person is admitted to the hospital, an intravenous solution of normal saline is begun. Since this does not harm the patient, what is the tonicity of normal saline compared to your blood?

Explain what occurs during endocytosis.

The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a

Which of the following does not utilize active transport?

Which of the following would be a way of finishing this hypothesis about the function of the Golgi apparatus? If the Golgi apparatus is involved in packaging products for secretion, then

The grainy-looking substance inside the nucleus is composed of

If a cell lacked ribosomes, it would not be able to

Since all organisms carry on cellular respiration, all living cells must contain mitochondria.

In the sodium potassium pump, sodium and potassium are both pumped out of the cell via active transport.

Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods. This process is known as

In a metabolic pathway, substrate Z is broken down to form product Y and X. Y is further broken down into products V and W. How many enzymes are required for this metabolic pathway?

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

During exocytosis, the phospholipids present in the vesicle membrane will end up in the plasma membrane.

How large is a nuclear pore in the nuclear envelope?

In the fluid-mosaic model of the plasma membrane, the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.

Cilia are composed of microtubules while flagella are composed of actin filaments.

A malfunction with the microtubules would interfere with mitosis and meiosis.

Exploring Life and Science

Chemistry of Life

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

The Lymphatic and Immune Systems

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Human Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

DNA Biology and Technology

Human Evolution

Global Ecology and Human Interferences

Human Population, Planetary Resources, and Conservation

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In the fluid-mosaic model of the plasma membrane, the phospholipid molecules are oriented so that the _ heads are facing the outside environment and the ____ tails are facing the interior of the membrane.