Question 1

A membrane carrier structure attracts a solute to a binding site,changes shape,and releases the solute on the other side of the cell membrane.This describes the process of:

Accepted Answer

A)  endocytosis. 
B)  the sodium and potassium pump. 
C)  channel-mediated transport. 
D)  carrier-mediated transport. 
A)  endocytosis. 
B)  the sodium and potassium pump. 
C)  channel-mediated transport. 
D)  carrier-mediated transport.

Question 2

One explanation of the action associated with isotonic solutions is that they all have the same potential osmotic pressure.

Accepted Answer

A) True 
 B)False

Question 3

Briefly explain the citric acid cycle.Name the energy molecules produced and explain how many of each are produced.

Accepted Answer

The citric acid cycle, also known as the

Question 4

The "lock-and-key model" is used to describe how mRNA and tRNA base pairs align.

Accepted Answer

A) True 
 B)False

Question 5

The sodium-potassium pump in the cell membrane moves potassium into the cell and sodium out of the cell.

Accepted Answer

A) True 
 B)False

Question 6

The active transport process involving pumps requires both a carrier system and cellular energy.

Accepted Answer

A) True 
 B)False

Question 7

The process of glycolysis does not occur in a specific organelle.

Accepted Answer

A) True 
 B)False

Question 8

A semipermeable membrane is needed for diffusion to occur.

Accepted Answer

A) True 
 B)False

Question 9

Describe a hypertonic solution and a hypotonic solution.Explain what would happen to a cell if it were put into each of these solutions.

Accepted Answer

A hypertonic solution is one in which th

Question 10

Most enzymes cannot catalyze a reaction in both directions.

Accepted Answer

A) True 
 B)False

Question 11

The most important end product in cellular respiration is oxygen.

Accepted Answer

A) True 
 B)False

Question 12

Match the name of each enzyme with its function or description.
-digestive enzymes

Accepted Answer

A) Hydrases 
B) Hydrolases 
C) Phosphorylating enzymes 
D) Mutases or isomerases 
E) Carboxylases or decarboxylases
F)Oxidases and hydrogenases 
A) Hydrases 
B) Hydrolases 
C) Phosphorylating enzymes 
D) Mutases or isomerases 
E) Carboxylases or decarboxylases
F)Oxidases and hydrogenases

Question 13

Match each term with its description.
-part of the cell in which citric acid cycles take place

Accepted Answer

A) Cytosol 
B) Citric acid cycle 
C) Pyruvic acid 
D) Acetyl coenzyme A 
E) NAD
F)Mitochondria
G)Lactic acid
H)Electron tr
I)Anaerobic
J)Glycolysis 
A) Cytosol 
B) Citric acid cycle 
C) Pyruvic acid 
D) Acetyl coenzyme A 
E) NAD
F)Mitochondria
G)Lactic acid
H)Electron tr
I)Anaerobic
J)Glycolysis

Question 14

Which of the following is not true of enzymes?

Accepted Answer

A)  They increase the activation of a reaction. 
B)  They are unchanged by the chemical reaction. 
C)  They frequently require a cofactor or coenzyme to function. 
D)  All of the above are true of enzymes. 
A)  They increase the activation of a reaction. 
B)  They are unchanged by the chemical reaction. 
C)  They frequently require a cofactor or coenzyme to function. 
D)  All of the above are true of enzymes.

Question 15

Potential osmotic pressure can be measured by determining the:

Accepted Answer

A)  concentration on either side of a membrane. 
B)  strength of the concentration gradient. 
C)  permeability of the membrane. 
D)  There is no direct means of measurement. 
A)  concentration on either side of a membrane. 
B)  strength of the concentration gradient. 
C)  permeability of the membrane. 
D)  There is no direct means of measurement.

Question 16

Hydrostatic pressure in the blood is:

Accepted Answer

A)  generated by the contraction of the heart. 
B)  generated by gravity. 
C)  important to the functioning of the kidney. 
D)  all of the above. 
A)  generated by the contraction of the heart. 
B)  generated by gravity. 
C)  important to the functioning of the kidney. 
D)  all of the above.

Question 17

Which of the following is not true of diffusion?

Accepted Answer

A)  Uses cellular energy 
B)  Can occur in living and nonliving cells 
C)  May occur both into and out of the cell 
D)  Energy source is cellular 
A)  Uses cellular energy 
B)  Can occur in living and nonliving cells 
C)  May occur both into and out of the cell 
D)  Energy source is cellular

Question 18

Diffusion is a characteristic of living things and will not occur in a nonliving system.

Accepted Answer

A) True 
 B)False

Question 19

If a 20% glucose solution were separated from a 10% glucose solution by a permeable membrane:

Accepted Answer

A)  glucose would move from the 20% solution to the 10% solution. 
B)  water would move from the 10% solution to the 20% solution. 
C)  water would move from the 20% solution to the 10% solution. 
D)  both A and B would occur. 
A)  glucose would move from the 20% solution to the 10% solution. 
B)  water would move from the 10% solution to the 20% solution. 
C)  water would move from the 20% solution to the 10% solution. 
D)  both A and B would occur.

Question 20

The process of end-product inhibition in a metabolic pathway is an example of a positive feedback loop.

Accepted Answer

A) True 
 B)False

Exam 4: Physiology of Cells

A membrane carrier structure attracts a solute to a binding site,changes shape,and releases the solute on the other side of the cell membrane.This describes the process of:

One explanation of the action associated with isotonic solutions is that they all have the same potential osmotic pressure.

Briefly explain the citric acid cycle.Name the energy molecules produced and explain how many of each are produced.

The "lock-and-key model" is used to describe how mRNA and tRNA base pairs align.

The sodium-potassium pump in the cell membrane moves potassium into the cell and sodium out of the cell.

The active transport process involving pumps requires both a carrier system and cellular energy.

The process of glycolysis does not occur in a specific organelle.

A semipermeable membrane is needed for diffusion to occur.

Describe a hypertonic solution and a hypotonic solution.Explain what would happen to a cell if it were put into each of these solutions.

Most enzymes cannot catalyze a reaction in both directions.

The most important end product in cellular respiration is oxygen.

Match the name of each enzyme with its function or description. -digestive enzymes

Match each term with its description. -part of the cell in which citric acid cycles take place

Which of the following is not true of enzymes?

Potential osmotic pressure can be measured by determining the:

Hydrostatic pressure in the blood is:

Which of the following is not true of diffusion?

Diffusion is a characteristic of living things and will not occur in a nonliving system.

If a 20% glucose solution were separated from a 10% glucose solution by a permeable membrane:

The process of end-product inhibition in a metabolic pathway is an example of a positive feedback loop.

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

B: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

Filters