BIO182 FINAL Questions with 100%
Correct Answers
Fick's law of diffusion describes the parameters that determine the diffusion of
oxygen and carbon dioxide across biological membranes, such as in our lungs.
Diffusion rate = k x A x (P2-P1)/D. Natural selection is Least likely to act upon
which of the following variables? Correct Answer: K
Which of the following best describes ventilation? Correct Answer: Moving air
past respiratory surfaces, such as the alveoli.
The enzyme carbonic anhydrase is found in the red blood cells and facilitates
the reaction between carbon dioxide and _____________________________.
Correct Answer: water
What property of steroid hormones allows them to cross the cell membrane?
Correct Answer: Steroid hormones are able to cross the cell membrane
because they are made from lipid
Indicate the hormone that is produced in the anterior pituitary gland: Correct
Answer: ACTH
Heart pumps blood from the left ventricle into the
________________________________. Correct Answer: systemic circulation
A disease that damages the cortex of the adrenal gland is expected to result in
an increase in the concentration levels of ______________________________.
Correct Answer: adrenocorticotropic hormone (ACTH)
Choose the answer that does NOT describe a function of the respiratory system.
Correct Answer: Transport of oxygen
, Which of the following statements regarding blood pressure in the circulatory
system is correct? Correct Answer: An increase in total diameter at the capillary
level decreases resistance to the blood flow, and therefore causes a decrease
in blood pressure in the capillaries
Hemoglobin delivers O2 to body cells from the red blood cells
__________________________________. Correct Answer: until the partial pressure of
O2 in the red blood cells and the body cells are equivalent
Blood pressure is ______________________ than osmotic pressure at the arterial
end of the capillary bed, which is where the process of
_______________________of water occurs. Correct Answer: greater, outward flow
Which part of the blood is most efficient at carrying oxygen? Correct Answer:
Hemoglobin molecules of red blood cells
Humans have difficulty breathing at high elevations because
_______________________ than at low elevations. Correct Answer: the partial
pressure of oxygen is lower
Which of the following statements about O2-binding curves is FALSE? Correct
Answer: A smaller decrease in PO2 is needed for hemoglobin to drop from 100
percent to 75 percent saturation than for hemoglobin to drop from 75 percent
to 50 percent saturation.
Resistance to the blood flow as it travels through a vessel is described by the
following equation. Which of the following parameters plays the greatest role
(ie, has the primary role) in determining the resistance to the blood flow in a
physiological circumstance?
R = 8ηL / πr4 Correct Answer: r
Correct Answers
Fick's law of diffusion describes the parameters that determine the diffusion of
oxygen and carbon dioxide across biological membranes, such as in our lungs.
Diffusion rate = k x A x (P2-P1)/D. Natural selection is Least likely to act upon
which of the following variables? Correct Answer: K
Which of the following best describes ventilation? Correct Answer: Moving air
past respiratory surfaces, such as the alveoli.
The enzyme carbonic anhydrase is found in the red blood cells and facilitates
the reaction between carbon dioxide and _____________________________.
Correct Answer: water
What property of steroid hormones allows them to cross the cell membrane?
Correct Answer: Steroid hormones are able to cross the cell membrane
because they are made from lipid
Indicate the hormone that is produced in the anterior pituitary gland: Correct
Answer: ACTH
Heart pumps blood from the left ventricle into the
________________________________. Correct Answer: systemic circulation
A disease that damages the cortex of the adrenal gland is expected to result in
an increase in the concentration levels of ______________________________.
Correct Answer: adrenocorticotropic hormone (ACTH)
Choose the answer that does NOT describe a function of the respiratory system.
Correct Answer: Transport of oxygen
, Which of the following statements regarding blood pressure in the circulatory
system is correct? Correct Answer: An increase in total diameter at the capillary
level decreases resistance to the blood flow, and therefore causes a decrease
in blood pressure in the capillaries
Hemoglobin delivers O2 to body cells from the red blood cells
__________________________________. Correct Answer: until the partial pressure of
O2 in the red blood cells and the body cells are equivalent
Blood pressure is ______________________ than osmotic pressure at the arterial
end of the capillary bed, which is where the process of
_______________________of water occurs. Correct Answer: greater, outward flow
Which part of the blood is most efficient at carrying oxygen? Correct Answer:
Hemoglobin molecules of red blood cells
Humans have difficulty breathing at high elevations because
_______________________ than at low elevations. Correct Answer: the partial
pressure of oxygen is lower
Which of the following statements about O2-binding curves is FALSE? Correct
Answer: A smaller decrease in PO2 is needed for hemoglobin to drop from 100
percent to 75 percent saturation than for hemoglobin to drop from 75 percent
to 50 percent saturation.
Resistance to the blood flow as it travels through a vessel is described by the
following equation. Which of the following parameters plays the greatest role
(ie, has the primary role) in determining the resistance to the blood flow in a
physiological circumstance?
R = 8ηL / πr4 Correct Answer: r
