Natural selection acts most directly on:
a. populations.
b. communities
c. ecosystems.
d. the biosphere.
e. K-selected organisms.
a
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True or False: Only humans have a biological clock
A. true B. false
Diamond shaped scales on lower order fish like bowfins and sturgeons
A) ganoid B) cycloid C) ctenoid D) placoid
Which of the following describes what may be occurring as competitive inhibition slows down the catalytic reaction of an enzyme?
a) all of the choices are correct b) the inhibitor induces a conformational change in the enzyme that prevents the chemical reaction from taking place c) the inhibitor competes as an alternative substrate, thereby forcing the enzyme to catalyze the enzymatic reaction on the inhibitor instead of the substrate d) the inhibitor binds to the enzyme and increases the concentration of available enzyme active sites
If left untreated, Lyme disease can lead to
a. arthritis. b. heart damage. c. neurological problems, like palsy and weakness. d. all of the above.