Specialized islet cells that secrete hormones are found scattered throughout the:
a. adrenal cortex
b. liver
c. thymus
d. adrenal medulla
e. pancreas
e
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Evaluate the following statements; which statement is accurate?
A. Scientists use the word theory to mean a hypothesis that has not been tested many times; this is the same way non-scientists use the word theory. B. Scientists use the word theory to mean a hypothesis that has been supported by many experiments; this is the same way non-scientists use the word theory. C. Scientists use the word theory in the same way that they use the word hypothesis; both mean a general idea that remains to be well tested. D. Scientists use the word theory to mean a hypothesis that has been supported by many experiments; non-scientists use the word theory to mean a hypothesis that remains to be well tested.
________ inhibitors bind the enzyme at a location other than the active site but still interfere with product formation.
Fill in the blank(s) with the appropriate word(s).
The human body's arterial blood pH is tightly maintained around 7.4 by buffering agents that bind hydrogen ions to stop any change in pH. If an acid-base imbalance overcomes the buffer system, the body changes the ventilation rate, or the rate at which gas enters or leaves the lungs. Changing the ventilation rate changes the concentration of CO2 in the blood, which alters the pH of the blood. In this case, pH 7.4 is the:
A. homeostatic challenge. B. sensor. C. effector. D. integrator. E. set point.
According to the phylogenetic tree above, fungi are more related to:
a. land plants. b. ambozoa. c. red algae. d. metazoans. e. bacteria.