QUESTIONS WITH 100% CORRECT
ANSWERS | LATEST VERSION 2025/2026.
When the temperature of the outside air exceeds their internal body temp, jackrabbits living in
hot, arid lands will respond homeostatically most likely by? - ANS dilating their blood vessels
in their large ears to transfer more body heat to the environment
Blood samples taken from an athlete who has been on a high-card diet for 24 hours might be
expected to exhibit which of the following? - ANS high levels of insulin
You wake up in the morning and measure your blood glucose and see that you are
hypoglycemic. Which of the following hormones would be released in your body to correct the
glucose level back to normal? - ANS glucagon
During a stress test measuring VO2-max which of these would best indicate that the test
subjects maximum VO2 max level has been reached? - ANS the rate of VO2 max increases
levels off to steady value during the test the VO2-max equal the amount of glucose continued
In the oscilloscope tracing above of a neuron firing K ion channels open maturity during which
number? - ANS 4
Assume that a single iPSP has a negative magnitude of -0.5 mV at the exon hillock and that an
angle EPSP has a positive magnitude of %0.5 mV For a neuron with an initial membrane
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, potential of -79 mV the net effect of the arrival of 6 iPSPs and 2 EPSPs would be likely to move
the membrane potential to a value of? - ANS -72mVl
Saltadory conduction is a term applied to? - ANS jumping of impulses from one node of
Ranvier to the next node in myelinated neuron
A poisonous toxin that binds specifically to voltage gated sodium channels in axons might be
expected to? - ANS prevent the depolarization phase of an action potentials
In the figure below what does the label "C" represent? - ANS Z-Line
What major muscle protein is the most prominent in the Light Band (isotropic Band) - the label
B in the figure below- of skeletal muscle cells? - ANS actins
The muscle protein which bind Ca ions is? - ANS troponen-C
Which of the following events does NOT occur during skeletal muscle contractions? -
ANS tropomyosin bind directly to myosin heads
The core concepts in the study of the biology of living organisms would likely include which of
the following? - ANS choose this choice if all of the above are core concepts of biology
Accumulated scientific date supports the hypothesis that all living things have evolved from a
common ancestor? - ANS True
Mary Human diseases arise from the disruption of cellular communication and coordination via
infection, mutation, chemical insult, or trauma? - ANS true
The type of chemical reaction occurring at the step "A" in the figure below is? -
ANS decarbocytation
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