Iowa State Bio 256 Exam Questions with
Correct Answers
what is not a characteristic of the adaptive immune system - Answer-it is specific for
particular organs
Kupffer Cells of the liver and brain microglial are - Answer-fixed macrophages
the redness and heat of an inflamed area are due to a local hyperemia caused by -
Answer-vasodilation
the chief antibody-mediated mechanism used against cellular antigens, such as
bacteria, is - Answer-compliment fixation
what is a production regulated by chemicals that reset the body's thermostat to a higher
setting - Answer-fever
what is a characteristic of antigens - Answer-reactivity with an antibody
Cancer cells and virus-infected body cells can be killed before activation of the immune
system by - Answer-natural killer cells
the only T cells that can directly attack and kill other cells are the - Answer-cytotoxin
cells
immune system memory cells involve - Answer-clones of B and T cells that responded
to something foreign
what is a characteristic of antibodies - Answer-composed of heavy and light polypeptide
chains
passage of IgG antibodies from a pregnant mother to her fetus is associated with -
Answer-passive immunity
Cytotoxic T cells are also known as ___ and they ____. - Answer-CD8 cells; destroy
cells harboring foreign antigens.
the single most effective way to prevent the spread of disease is - Answer-handwashing
the factors responsible for holding the lungs open include - Answer-surface tension of
pleural fluid and no outside opening to the pleural cavity
why are polar water molecules are more strongly attracted to each other than to gas
molecules in the air? - Answer-because surface tension exists in alveoli
, the lung volume representing the total volume exchangeable are is the - Answer-vital
capacity
when a gas mixture with liquid, each gas will dissolve in the liquid - Answer-in proportion
to its partial pressure
A possible cause of Hypoxia is - Answer-too little oxygen in the atmosphere
the erythrocyte count increases after a while when an individual goes from a low to a
high altitude because - Answer-the concentration of oxygen and total atmospheric
pressure is lower at high altitudes
when a person holds their breath as long as they can, they have induced - Answer-
respiratory acidosis
Adjusts GFR and Na+ reabsorption, therefore controlling blood pressure and volume -
Answer-the function of the Juxtaglomerular apparatus
what part of the kidney is hypertonic, aiding in water reabsorption? - Answer-medulla
the clearance value of glucose is zero. what does this mean? - Answer-normally all the
glucose is reabsorbed
what would not be a normal constituent of urine - Answer-protein
what is the ability of cells to recognize a specific antigen by binding to it - Answer-
immunocompetence
what is NOT an electrolyte - Answer-cholesterol
Hypersensitivity to pollen due to cross linking of IgE on mast cells and subsequent
release of histamine is a cause of what physiological process? - Answer-Symptoms of
hay fever
a young woman has just eaten a large order of heavily salted french fries, some pickled
eggs, and some cheese. How will consuming this much salt affect her physiology? -
Answer-there will be a temporary increase in blood volume
Decreased resistance means - Answer-the airways have been dilated
Respiratory acidosis can occur when - Answer-a persons breathing is shallow due to
obstruction
The most important line of defense used by the innate defense system is - Answer-
inflammation
Correct Answers
what is not a characteristic of the adaptive immune system - Answer-it is specific for
particular organs
Kupffer Cells of the liver and brain microglial are - Answer-fixed macrophages
the redness and heat of an inflamed area are due to a local hyperemia caused by -
Answer-vasodilation
the chief antibody-mediated mechanism used against cellular antigens, such as
bacteria, is - Answer-compliment fixation
what is a production regulated by chemicals that reset the body's thermostat to a higher
setting - Answer-fever
what is a characteristic of antigens - Answer-reactivity with an antibody
Cancer cells and virus-infected body cells can be killed before activation of the immune
system by - Answer-natural killer cells
the only T cells that can directly attack and kill other cells are the - Answer-cytotoxin
cells
immune system memory cells involve - Answer-clones of B and T cells that responded
to something foreign
what is a characteristic of antibodies - Answer-composed of heavy and light polypeptide
chains
passage of IgG antibodies from a pregnant mother to her fetus is associated with -
Answer-passive immunity
Cytotoxic T cells are also known as ___ and they ____. - Answer-CD8 cells; destroy
cells harboring foreign antigens.
the single most effective way to prevent the spread of disease is - Answer-handwashing
the factors responsible for holding the lungs open include - Answer-surface tension of
pleural fluid and no outside opening to the pleural cavity
why are polar water molecules are more strongly attracted to each other than to gas
molecules in the air? - Answer-because surface tension exists in alveoli
, the lung volume representing the total volume exchangeable are is the - Answer-vital
capacity
when a gas mixture with liquid, each gas will dissolve in the liquid - Answer-in proportion
to its partial pressure
A possible cause of Hypoxia is - Answer-too little oxygen in the atmosphere
the erythrocyte count increases after a while when an individual goes from a low to a
high altitude because - Answer-the concentration of oxygen and total atmospheric
pressure is lower at high altitudes
when a person holds their breath as long as they can, they have induced - Answer-
respiratory acidosis
Adjusts GFR and Na+ reabsorption, therefore controlling blood pressure and volume -
Answer-the function of the Juxtaglomerular apparatus
what part of the kidney is hypertonic, aiding in water reabsorption? - Answer-medulla
the clearance value of glucose is zero. what does this mean? - Answer-normally all the
glucose is reabsorbed
what would not be a normal constituent of urine - Answer-protein
what is the ability of cells to recognize a specific antigen by binding to it - Answer-
immunocompetence
what is NOT an electrolyte - Answer-cholesterol
Hypersensitivity to pollen due to cross linking of IgE on mast cells and subsequent
release of histamine is a cause of what physiological process? - Answer-Symptoms of
hay fever
a young woman has just eaten a large order of heavily salted french fries, some pickled
eggs, and some cheese. How will consuming this much salt affect her physiology? -
Answer-there will be a temporary increase in blood volume
Decreased resistance means - Answer-the airways have been dilated
Respiratory acidosis can occur when - Answer-a persons breathing is shallow due to
obstruction
The most important line of defense used by the innate defense system is - Answer-
inflammation
