Question 1

The ion transporter that moves Na+ and Ca2+ simultaneously in the same direction is an example of which of the following types of transport?

Accepted Answer

A)  Active mediated transport 
B)  Uniport 
C)  Antiport 
D)  Symport 
A)  Active mediated transport 
B)  Uniport 
C)  Antiport 
D)  Symport D

Question 2

A biopsy of the lung bronchi revealed ciliated epithelial cells that are capable of secretion and absorption. These cells are called:

Accepted Answer

A)  simple columnar epithelium. 
B)  ciliated simple columnar epithelium. 
C)  stratified columnar epithelium. 
D)  pseudostratified ciliated columnar epithelium. 
A)  simple columnar epithelium. 
B)  ciliated simple columnar epithelium. 
C)  stratified columnar epithelium. 
D)  pseudostratified ciliated columnar epithelium. B

Question 3

A patient with metastatic cancer would be expected to have alterations in extracellular matrix that include:

Accepted Answer

A)  decreased fibronectin. 
B)  increased collagen. 
C)  decreased elastin. 
D)  increased glycoproteins. 
A)  decreased fibronectin. 
B)  increased collagen. 
C)  decreased elastin. 
D)  increased glycoproteins. A

Question 4

In cirrhosis, how does cholesterol alter the fluidity of the plasma membrane of erythrocytes?

Accepted Answer

A)  Cholesterol decreases the membrane fluidity of the erythrocyte, which reduces its ability to carry oxygen. 
B)  Cholesterol decreases the membrane fluidity of erythrocytes, which reduces its ability to carry hemoglobin. 
C)  Cholesterol increases the membrane fluidity of erythrocytes, which allows binding of excess glucose. 
D)  Cholesterol increases the membrane fluidity of erythrocytes, which prolongs its life span beyond 120 days. 
A)  Cholesterol decreases the membrane fluidity of the erythrocyte, which reduces its ability to carry oxygen. 
B)  Cholesterol decreases the membrane fluidity of erythrocytes, which reduces its ability to carry hemoglobin. 
C)  Cholesterol increases the membrane fluidity of erythrocytes, which allows binding of excess glucose. 
D)  Cholesterol increases the membrane fluidity of erythrocytes, which prolongs its life span beyond 120 days.

Question 5

The movement of fluid across the arterial end of capillary membranes into the interstitial fluid surrounding the capillary is an example of which process of fluid movement?

Accepted Answer

A)  Hydrostatic pressure 
B)  Osmosis 
C)  Diffusion 
D)  Active transport 
A)  Hydrostatic pressure 
B)  Osmosis 
C)  Diffusion 
D)  Active transport

Question 6

The process during which lysosomal enzymes can be released to degrade engulfed particles is referred to as:

Accepted Answer

A)  endocytosis. 
B)  pinocytosis. 
C)  phagocytosis. 
D)  exocytosis. 
A)  endocytosis. 
B)  pinocytosis. 
C)  phagocytosis. 
D)  exocytosis.

Question 7

A cell is isolated for microscopy. It is observed to have supercoiled DNA with histones. Which of the following would also be observed?

Accepted Answer

A)  Single circular chromosome 
B)  Nucleus 
C)  Freely floating nuclear material 
D)  No organelles 
A)  Single circular chromosome 
B)  Nucleus 
C)  Freely floating nuclear material 
D)  No organelles

Question 8

A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate his continued muscle performance?

Accepted Answer

A)  Electron-transport chain 
B)  Aerobic glycolysis 
C)  Anaerobic glycolysis 
D)  Oxidative phosphorylation 
A)  Electron-transport chain 
B)  Aerobic glycolysis 
C)  Anaerobic glycolysis 
D)  Oxidative phosphorylation

Question 9

A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the genetic information be contained?

Accepted Answer

A)  Mitochondria 
B)  Ribosome 
C)  Nucleolus 
D)  Nucleus 
A)  Mitochondria 
B)  Ribosome 
C)  Nucleolus 
D)  Nucleus

Question 10

How are potassium and sodium transported across plasma membranes?

Accepted Answer

A)  By passive electrolyte channels 
B)  By coupled channels 
C)  By adenosine triphosphate enzyme (ATPase) 
D)  By diffusion 
A)  By passive electrolyte channels 
B)  By coupled channels 
C)  By adenosine triphosphate enzyme (ATPase) 
D)  By diffusion

Question 11

How is the transport of glucose from the blood to the cell accomplished?

Accepted Answer

A)  By active-mediated transport (active transport) 
B)  By active diffusion 
C)  By passive osmosis 
D)  By passive-mediated transport (facilitated diffusion) 
A)  By active-mediated transport (active transport) 
B)  By active diffusion 
C)  By passive osmosis 
D)  By passive-mediated transport (facilitated diffusion)

Question 12

In cellular metabolism, each enzyme has a high affinity for a:

Accepted Answer

A)  solute. 
B)  substrate. 
C)  receptor. 
D)  ribosome. 
A)  solute. 
B)  substrate. 
C)  receptor. 
D)  ribosome.

Question 13

The movement of small, electrically uncharged molecules through a semipermeable barrier is an example of:

Accepted Answer

A)  osmosis. 
B)  diffusion. 
C)  hydrostatic pressure. 
D)  active transport. 
A)  osmosis. 
B)  diffusion. 
C)  hydrostatic pressure. 
D)  active transport.

Question 14

A patient who has diarrhea receives a hypertonic saline solution intravenously to replace the sodium and chloride lost in the stool. What effect will this fluid replacement have on cells?

Accepted Answer

A)  Cells will become hydrated. 
B)  Cells will swell or burst. 
C)  Cells will shrink. 
D)  Cells will divide. 
A)  Cells will become hydrated. 
B)  Cells will swell or burst. 
C)  Cells will shrink. 
D)  Cells will divide.

Question 15

A tissue capillary bed has a hydrostatic pressure of 25 mm Hg and an oncotic pressure of 10 mm Hg. The filtration pressure is _____ mm Hg.

Accepted Answer

A)  5 
B)  10 
C)  15 
D)  20 
A)  5 
B)  10 
C)  15 
D)  20

Question 16

The three phases of cellular catabolism are:

Accepted Answer

A)  digestion, glycolysis and oxidation, and the citric acid cycle. 
B)  diffusion, osmosis, and mediated transport. 
C)  S phase, G phase, and M phase. 
D)  metabolic absorption, respiration, and excretion. 
A)  digestion, glycolysis and oxidation, and the citric acid cycle. 
B)  diffusion, osmosis, and mediated transport. 
C)  S phase, G phase, and M phase. 
D)  metabolic absorption, respiration, and excretion.

Question 17

At rest, the membrane potential is nearly the equilibrium potential for potassium. Why is potassium able to diffuse easily in and out of cells?

Accepted Answer

A)  Because potassium has a greater concentration in the intracellular fluid (ICF) 
B)  Because sodium has a greater concentration in the extracellular fluid (ECF) 
C)  Because the resting plasma membrane is more permeable to potassium 
D)  Because there is an excess of anions inside the cell 
A)  Because potassium has a greater concentration in the intracellular fluid (ICF) 
B)  Because sodium has a greater concentration in the extracellular fluid (ECF) 
C)  Because the resting plasma membrane is more permeable to potassium 
D)  Because there is an excess of anions inside the cell

Question 18

Which form of cell communication is used to communicate with other cells in direct physical contact?

Accepted Answer

A)  Cell junction 
B)  Gap junction 
C)  Desmosomes 
D)  Tight junctions 
A)  Cell junction 
B)  Gap junction 
C)  Desmosomes 
D)  Tight junctions

Question 19

The phase of catabolism during which ATP production is highest is:

Accepted Answer

A)  digestion. 
B)  glycolysis. 
C)  oxidation. 
D)  citric acid cycle. 
A)  digestion. 
B)  glycolysis. 
C)  oxidation. 
D)  citric acid cycle.

Question 20

The phase during the cell cycle where nuclear and cytoplasmic division occurs is called:

Accepted Answer

A)  G1. 
B)  S. 
C)  M. 
D)  G2. 
A)  G1. 
B)  S. 
C)  M. 
D)  G2.

Exam 1: Cellular Biology

The ion transporter that moves Na+ and Ca2+ simultaneously in the same direction is an example of which of the following types of transport?

A biopsy of the lung bronchi revealed ciliated epithelial cells that are capable of secretion and absorption. These cells are called:

A patient with metastatic cancer would be expected to have alterations in extracellular matrix that include:

In cirrhosis, how does cholesterol alter the fluidity of the plasma membrane of erythrocytes?

The movement of fluid across the arterial end of capillary membranes into the interstitial fluid surrounding the capillary is an example of which process of fluid movement?

The process during which lysosomal enzymes can be released to degrade engulfed particles is referred to as:

A cell is isolated for microscopy. It is observed to have supercoiled DNA with histones. Which of the following would also be observed?

A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate his continued muscle performance?

A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the genetic information be contained?

How are potassium and sodium transported across plasma membranes?

How is the transport of glucose from the blood to the cell accomplished?

In cellular metabolism, each enzyme has a high affinity for a:

The movement of small, electrically uncharged molecules through a semipermeable barrier is an example of:

A patient who has diarrhea receives a hypertonic saline solution intravenously to replace the sodium and chloride lost in the stool. What effect will this fluid replacement have on cells?

A tissue capillary bed has a hydrostatic pressure of 25 mm Hg and an oncotic pressure of 10 mm Hg. The filtration pressure is _____ mm Hg.

The three phases of cellular catabolism are:

At rest, the membrane potential is nearly the equilibrium potential for potassium. Why is potassium able to diffuse easily in and out of cells?

Which form of cell communication is used to communicate with other cells in direct physical contact?

The phase of catabolism during which ATP production is highest is:

The phase during the cell cycle where nuclear and cytoplasmic division occurs is called:

Genes and Genetic Diseases

Altered Cellular and Tissue Biology

Fluids and Electrolytes, Acids and Bases

Innate Defenses: Inflammation

Adaptive Immunity

Hypersensitivities, Infection, and Immune Deficiencies

Stress and Disease

Biology of Cancer and Tumor Spread

Cancer Epidemiology, Manifestations, and Treatment

Cancer in Children

Structure and Function of the Neurologic System

Pain, Temperature, Sleep, and Sensory Function

Concepts of Neurologic Dysfunction

Alterations of Neurologic Function

Alterations of Neurologic Function in Children

Mechanisms of Hormonal Regulation

Alterations of Hormonal Regulation

Structure and Function of the Hematologic System

Alterations of Hematologic Function

Alterations of Hematologic Function in Children

Structure and Function of the Cardiovascular and Lymphatic Systems

Alterations of Cardiovascular Function

Alterations of Cardiovascular Function in Children

Structure and Function of the Pulmonary System

Alterations of Pulmonary Function

Alterations of Pulmonary Function in Children

Structure and Function of the Renal and Urologic Systems

Alterations of Renal and Urinary Tract Function

Alterations of Renal and Urinary Tract Function in Children

Structure and Function of the Reproductive Systems

Alterations of the Reproductive Systems, Including Sexually Transmitted Infections

Structure and Function of the Digestive System

Alterations of Digestive Function

Alterations of Digestive Function in Children

Structure and Function of the Musculoskeletal System

Alterations of Musculoskeletal Function

Alterations of Musculoskeletal Function in Children

Structure, Function, and Disorders of the Integument

Alterations of the Integument in Children

Filters

The ion transporter that moves Na⁺ and Ca²⁺ simultaneously in the same direction is an example of which of the following types of transport?