Download Bio112-2015_Assessment_Content-Objective1

BIO112 Field 6 Assessment for Spring 2015
Content
Goal:
Students will demonstrate through explanations, interpretations, and critical analysis their
understanding of natural phenomena.
Objective evaluated:
Students will recognize valid application of cause and effect reasoning
EXAM 1: n= 162
1.
For a cube-shaped cell, which of the following changes would NOT increase the rate of
exchange/volume of cell?
0.395% Correct (A)
a. increase the size of the cell
b. insert microvilli on surface of cell
c. increase the surface area: volume ratio of the cell
d. changing the extracellular fluid from isotonic to hypertonic
e. extensive folding of the plasma membrane
2.
For a regulator, which of the following graphs best represents the relationship between
environmental temperature and body temperature?
0.920 % Correct (B)
A
Body temperature
Body temperature
B
Environmental temperature
C
Environmental temperature
Environmental temperature
Body temperature
Body temperature
D
Environmental temperature
15. Which of the following graphs correctly shows the effect of cholesterol on membrane fluidity?
0.667% Correct (A)
EXAM 2: n= 159 students
9.
A college student walks from Old Main to Health Science when the temperature outside is
-20 ° C. Fig. 3 shows the student’s body temperature as she walks outside without a jacket. Which of the
following accounts for the change in body temperature between 10 and 12 minutes in Fig. 3. ?
0.396% Correct (B)
Fig. 3
38
Temperature (C)
37.5
37
36.5
0
2
4
6
8
10
Time (min)
a.
b.
c.
d.
e.
Increase in set point for temperature
Shivering of skeletal muscles
Negative feedback
Both a. and b.
All of the above
12
14
16
18
25.
Which of the following graphs best describes negative feedback regulation of the endocrine
system?
0.623% Correct (B)
TRH concentration
B
TRH Concentration
A
Thyroxine (T4) concentration
uterine contraction
Thyroxine
(T4) concentration
D
TRH concentration
TRH Concentration
C
Thyroxine (T4) concentration
Thyroxine (T4) concentration
31. You are hiking in the desert in Arizona. As you come to the top of a plateau, you hear a very odd
rattling sound, and look down and see a rattlesnake 8 inches from your foot. Immediately, your heart
rate increases and your eyes dilate. Which of the following is directly responsible for these
physiological changes in your heart and eyes? Choose the most correct answer.
0.730 % Correct (C)
a. somatic nervous system
b. sensory nervous system
c. sympathetic nervous system
d. parasympathetic nervous system
e. central nervous system
EXAM 3: n =152 students
7. The influx of K+ ions into the guard cells will …
0.921% Correct (C)
a. cause the guard cells to become flaccid
b. cause water to flow out of the guard cells
c. cause the stomata to open
d. inhibit photosynthesis
e. inhibit transpiration
11. The pressure created at the source end of the phloem is the result of
0.546% Correct (D)
a. active pumping of sucrose out of the sieve tube
b. water moving from the sieve tube into the xylem
c. transpiration water loss from the sink end of the phloem
d. high solute concentration in sieve tubes at the source end
e. active transport of water into the source end sieve tube
21. Which of the following would NOT lead to an increase in heart rate?
0.678% Correct (B)
a. Release of epinephrine by the adrenal gland
b. Stimulation of the parasympathetic nerves innervating the heart.
c. Increasing the frequency of action potentials (electrical events) in the S.A. node.
d. Release of norepinephrine by the sympathetic nerves innervating the heart.
e. Running.
23. Which of the following could result in an increase in blood pressure in the arteries?
0.7783% Correct (C)
a. a decrease in heart rate
b. a decrease in stroke volume
c. vasoconstriction of arterioles
d. two of the above
e. a., b, & c.
25. Which of the following graphs best illustrates the relationship between total cross sectional area
and velocity in the vascular system?
0.671% Correct(A)
33. Which of the following occurs in response to an increase in CO2 levels in the blood?
0.684% Correct (C)
a. pH increases
b. decrease in rate(frequency) of ventilation
c. increase in rate (frequency) of diaphragm contraction
d. decrease in action potential rate (frequency ) in neurons that innervate the rib muscles.
e. decrease in H+ concentration in blood
EXAM 4: n =144 students
3. Which of the following graphs represents the response of an osmoregulator to changes in
environment?
0.813% Correct (C)
10. A new dietary supplement blocks sodium transport in the ascending loop of Henle. Which of the
following processes would be affected by the dietary supplement?
0.507% Correct (E)
a. production of an osmolarity gradient in the interstitial fluid of the kidney
b. reabsorption of water from the descending loop of Henle
c. reabsorption of water from the collecting duct
d. two of the above
e. all of the above
11. Which of the following would NOT be a response to renin release?
0.604% Correct (B)
a. blood pressure increases
b. blood osmolarity increases
c. blood volume increases
d. release of aldosterone
e. vasoconstriction of systemic arterioles
28. Which of the following is correct about hormonal control of human reproduction?
0.639% Correct (E)
a. Estrogen causes the endometrium to be shed
b. Progesterone from the corpus luteum increases GnRH release
c. Leydig cells secrete LH
d. A progesterone spike directly triggers ovulation
e. LH is needed for the maintenance of the corpus luteum
FINAL EXAM
9. BMP is a protein normally secreted by cells. In which of the following areas would BMP be found if
cells were treated with a drug that cleaved the signal peptide of BMP as the protein was translated?
0.732% Correct (B)
a. lysosome
b. extracellular fluid
c. E.R.
d. plasma membrane
e. cytoplasm
14. The data below show the rate of transport of two different solutes into the same cell. Which of the
following statements can be concluded from the data shown below?
0.718% Correct (D)
a. The solute concentration gradient does not affect the rate of transport of solute A.
b. Increasing the solute concentration gradient decreases the rate of transport of solute A.
c. Increasing the solute concentration gradient above 0.3 mM causes an increase in the rate of transport
of solute B.
d. Increasing the solute concentration gradient increases the rate of transport of solute A
e. At 0.15 mM, Solute A transports into the cell at a faster rate than solute B.
38. A young child brought into the emergency room has swallowed a bottle of pills, resulting in a
significant decrease in his blood glucose levels. Which treatment would be used by a physician to
quickly return the child’s blood glucose back to normal?
0.831% Correct (C)
a. An injection of insulin alone
b. A combined injection of insulin and glucagon
c. An injection of glucagon alone
d. An injection of parathyroid hormone (PTH) alone
e. A combined injection of calcitonin and PTH
40. Which of the following glands or organs secretes a hormone that directly affects blood glucose
levels?
0.810% Correct (B)
B
B
C
A
a. A
b. B
c. C
d. A and B
e. all of the above
41. An endocrinologist finds that her patient has abnormally high levels of thyroid stimulating hormone
(TSH) and thyrotropin-releasing hormone (TRH), but lower than normal thyroxine (T4) blood levels.
Which of the following can account for the hormone levels in the patient?
0.669% Correct (D)
a. hypothalamus unable to secrete hormones into blood
b lack of receptors for TRH in pituitary gland
c. inability of pituitary gland to synthesize and secrete thyroxine
d. lack of receptors for TSH in the thyroid gland
e. excessive amount of hormone synthesis by the thyroid gland
43. Which of the following mechanisms would prevent transfer of information between two neurons
(synaptic transmission) with a chemical synapse?
0.803% Correct (D)
a. inhibition of voltage-gated calcium channels in the pre-synaptic membrane
b. inhibition of neurotransmitter binding to ligand-gated channels in the post-synaptic membrane
c. diffusion of neurotransmitter across the synaptic cleft
d. two of the above
e. a, b, and c
48. Which of the following activities would NOT be associated with the sympathetic division of the
nervous system?
0.394% Correct (A)
a. decrease in heart rate
b. increase in glucose levels in blood
c. relaxation of bronchi in lungs
d. inhibition of activity in stomach and intestines
e. all of the above ( a- d)
60. When the left ventricle contracts
0.859% Correct (A)
a. the aortic semilunar valve opens
b. the left atrioventricular valve opens
c. the right atrioventricular valve opens
d. blood is pumped to the lungs from the left ventricle
e. the left atrium contracts simultaneously
66. Contraction of the smooth muscles of arterioles would lead to
0.796% Correct (E)
a. vasoconstriction of the arterioles
b. an increase in blood pressure
c. an increase blood flow through the arteriole
d. Both b & c are correct
e. Both a & b are correct
70. According to Fick’s Law, which of the following would decrease the efficiency of oxygen exchange?
0.845% Correct (A)
a. decreasing the number of functional alveoli
b. decreasing the distance between alveoli and capillaries
c. double circulation
d. increasing ventilation
e. moving from a high altitude(partial pressure of oxygen= 50 mm Hg) to a low altitude (partial
pressure of oxygen = 160 mm Hg)
76. Which of the following graphs represents the response of an osmoconformer to changes in
environment?
0.831% Correct (B)
77. ADH ( antidiuretic hormone)
0.754% Correct (D)
a. is released in response to reduced blood osmolarity
b. is released in response to elevated blood pressure
c. decreases the permeability of the collecting duct to H20
d. increases the amount of aquaporin channels in the membrane of the collecting duct cells.
e. increases urine volume
78. Which of the following statements is TRUE?
0.620% Correct (B)
a. angiotensin II activates renin
b. renin is released by cells within the kidney in response to low blood pressure
c. activation of the renin-angiotensin system causes vasodilation of the general arteriolar system
d. aldosterone increases Na+ secretion into the distal tubules.
e. high Ca+ concentrations in the blood stimulate the release of renin
91. Which of the following events results directly from the hormonal stimulus?
0.739% Correct (C)
a. ovulation – decreasing levels of estrogen
b. onset of menstrual flow phase - increasing levels of estrogen
c. maintenance of corpus luteum – LH
d. growth of an ovarian follicle - release of progesterone
e. proliferation of endometrial cells – GnRH
93. Which of the following is FALSE concerning the action of reproductive hormones?
0.697% Correct (B)
a. An increase in estrogen(estradiol) can stimulate an increase in GnRH release.
b. Increased testosterone in the blood will increase GnRH release
c. GnRH stimulates FSH release in the female
d. LH stimulates testosterone release in the male
e. High levels of both estrogen and progesterone can inhibit GnRH release.