When a person has type I diabetes:
a) the pancreas does not produce enough insulin.
b) the pancreas does not produce enough glucagons.
c) the pancreas overproduces insulin.
d) the pancreas overproduces glucagons.
e) none of the above
Question 24
Janak fell from a horse and received a spinal cord injury. How would you classify this injury in terms of a division of the nervous system?
a) Peripheral.
b) Autonomic.
c) Sympathetic.
d) Parasympathetic.
e) Central.
Question 25
Darren is a wildlife technician who is sampling specimens from a deer to determine reproductive condition. Where in the deer would he observe meiosis?
a) Bulbourethral glands.
b) Seminal vesicles.
c) Prostate gland.
d) Urethra.
e) Seminiferous tubules.
Question 26
In the gills of a fish, the blood flows in the opposite direction to the flow of water. What is the advantage of this in terms of gas exchange in comparison to a system in which blood and water flow in the same direction?
a) Water pressure on the blood is higher.
b) Blood entering the gill encounters a high concentration gradient which rapidly diminishes during transit through the gill.
c) Blood entering the gill is oxygen-rich and therefore can maximize gas exchange with the water.
d) A concentration gradient is maintained over a larger gill area.
e) Less blood pressure is required.
Question 27
Which of the following is an explanation of why deserts have low rainfall?
a) Equatorial air mass inflow has previously lost much water.
b) Deserts have cool nights and warm days.
c) The earth rotates in an easterly direction.
d) Water is locked in permafrost deep in the ground.
e) Deserts are impoverished of soil nutrients.
Question 28
Which of the following statements IS NOT true concerning ocean currents?
a) Surface currents in the ocean are called gyres.
b) The circulation in the ocean moves in great spiral patterns or loops.
c) The gyres move counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.
d) The surface currents move around zones of high pressure between 30 degrees north and 30 degrees south latitude.
Question 29
High amounts of organics introduced into a pond or lake result in:
a) growth of bacteria and a reduction in oxygen levels.
b) growth of bacteria and an increase in oxygen levels.
c) the death of bacteria and a reduction in oxygen levels.
d) the death of bacteria and an increase in oxygen levels.
e) none of the above
Question 30
The stimulation of uterine contractions by oxytocin is an example of:
a) Negative feedback
b) Positive feedback
c) Anatogonism
d) Synergism
Question 31
Which of the following is not an example of systemic circulation?
a) Blood flow to the kidneys.
b) Blood flow to the heart muscle.
c) Blood flow to the brain.
d) Blood flow to the lungs.
e) Blood flow to the liver.
Question 32
Kyle has osteoarthritis in his knee joint. When a surgeon inspects the inside of the knee joint, he is most likely to notice that the osteoarthritis has been initiated by degeneration of what tissue?
a) Ligament.
b) Tendon.
c) Cartilage.
d) Muscle.
e) Bone.
Question 33
Gabrielle noticed that her dog began to salivate whenever it smelled the barbeque. What triggered salivation?
a) Secretin.
b) Cholecystokinin.
c) Chemoreception.
d) Salivary amylase.
e) Gastrin.
Question 34
Olivia is inspecting some specimens under the microscope. Which of the following could she classify as part of an organ rather than as a tissue?
a) a single layer of flattened cells and a basement membrane.
b) Granulocytes and agranulocytes.
c) Fibroblasts and osteocytes.
d) Dendrites and nerve fibers.
e) platelets and red blood cells.
Question 35
The role of interneurons is to:
a) receive information and transmit it to the central nervous system.
b) transmit commands away from the central nervous system to the muscles.
c) integrate incoming information with the outgoing messages within the brain.
d) protect the function of the neuron and allow it to transmit rapidly.
Question 36
Gabriella is studying the sensory responses of hibernating bears. Which of the following would she classify as a “special” sense?
a) Reaction to a noxious odor.
b) Limb movement away from a hot probe.
c) Shivering in response to a drop in temperature.
d) Limb movement away from a pin prick.
e) Limb movement in response to pressure on the skin.
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