When the temperature of the outside air exceeds their internal body temp, jackrabbits living in hot, arid lands will respond homeostatically most likely by? correct answers dilating their blood vessels in their large ears to transfer more body heat to the environment
Blood samples taken from an ...
when the temperature of the outside air exceeds th
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When the temperature of the outside air exceeds their internal body temp, jackrabbits living
in hot, arid lands will respond homeostatically most likely by? correct answers 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? correct answers 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? correct answers 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? correct answers 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? correct answers 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
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? correct answers -72mVl
Saltadory conduction is a term applied to? correct answers 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? correct answers prevent the depolarization phase of an action potentials
In the figure below what does the label "C" represent? correct answers 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? correct answers actins
The muscle protein which bind Ca ions is? correct answers troponen-C
Which of the following events does NOT occur during skeletal muscle contractions? correct
answers 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? correct answers 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? correct answers True
, Mary Human diseases arise from the disruption of cellular communication and coordination
via infection, mutation, chemical insult, or trauma? correct answers true
The type of chemical reaction occurring at the step "A" in the figure below is? correct
answers decarbocytation
A role of Erth's minerals in the establishment of complex biomolecules during the origin of
Life on Earth was likely? correct answers To provide scaffolding supports for concentrating
small molecules
__________ is the physical property of water as it changes from a solid to a liquid? correct
answers The heat of fusion
The Km (Michelles constant) of an enzyme catalyzed reaction is defined as the substrate
concentration that gives the maximal velocity (Vmax) taxins for the enzyme? correct answers
False
Where within eukaryotic cells is ATP synthesized? correct answers choose this choice if ATP
may be made in all of the above
The conservative nature of cellular metabolizes is suggested because ADP is a structural part
of which of the following coenzymes of cellular metabolism? correct answers choose this
choice if ADP is part of all of the above coenzymes thus suggesting a conservative
metabolism
From among only the following the organelles which is likely the smallest in an animal cell
is? correct answers the ribosome
The cellular chemical reaction that synthesizes dipeptides, disaccharides and dinucleotides,
from their monomers in cells is a? correct answers condensation reaction
which of the following intercellular junction between plant cells is a communication type
intercellular junction? correct answers plasmodesma
The metal ion zinc in an essential trace elements that may be bound to enzymes such as
carbonic anhydrase what would be the likely function of Zn ions? correct answers as a
cofactor necessary for catalysis
An alteration in which of the following levels of the structural organization could likely
change the activity of the enzyme protein? correct answers chose this choice if an alteration
of any of these could change a enzyme proteins function
Eukaryotic cell organelles other than the nucleus that would contain DNA include? correct
answers mitochondrion and chloroplasts
Liver cells carry out extensive protein synthesis and therefore might be rich in which of these
cellular organelles? correct answers rough ER
To be of value to science, hypotheses must be primarily ____. correct answers testable and
falsifiable
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