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BIO 242, Exam 3 Graded A+
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BIO 242, Exam 3 Graded A+
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BIO 242, Exam 3 Graded A+A cell with membrane-bound proteins that selectively bind a specific hormone is called
that hormone's ____. - ANS-Target Cell
Action potentials in the heart move from one contractile cell to the next via ____. - ANS-
gap junctions in the intercalated disks
After surgical removal of the gallbladder, a person might need to limit their dietary intake
of... - ANS-fat
Antidiuretic hormone (ADH) and the renin-angiotensin-aldosterone system (RAAS) work
together in maintaining osmoregulatory homeostasis through which of the following
ways? - ANS-ADH regulates the osmolarity of the blood by altering renal reabsorption of
water, and the RAAS maintains the osmolarity of the blood by stimulating both Na+ and
water reabsorption.
Chitin is a major component of the ____. - ANS-exoskeleton of insects
Circulatory systems compensate for ____. - ANS-the slow rate at which diffusion occurs
over large distances
Compared to oxidative skeletal muscle fibers, those classified as glycolytic typically
have ____. - ANS-less resistance to fatigue
Countercurrent exchange in the fish gill helps to maximize ____. - ANS-diffusion
Damage to the sinoatrial node in humans would ____. - ANS-block conductance
between the bundle branches and the Purkinje fibers
During the contraction of a vertebrate skeletal muscle fiber, calcium ions - ANS-bind
with troponin, changing its shape so that the myosin-binding sites on actin are exposed.
Emotional responses and emotional memories are linked in which part of the brain? -
ANS-Limbic System
Fight-or-flight reactions include activation of the ____. - ANS-adrenal medulla, leading
to increased secretion of epinephrine
How has the avian lung adapted to the metabolic demands of flight? - ANS-Gas
exchange occurs during both inhalation and exhalation
In most neurons, the concentration of _ is relatively higher outside the cell for the resting
potential. - ANS-sodium
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