Enzymes classified as ________ convert chemical
bond energy to light energy.
a. catalases
b. lipases
c. proteases
d. amylases
e. luciferases
Answer: e
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Foods such as acidic fruits are often spoiled by
A. fungi. B. protozoans. C. viruses. D. bacteria.
A patient visits your clinic often with recurrent respiratory infections. Based upon their medical history, it appears they have been an active smoker for over 40 years. Select the statement that most accurately reflects how this information may reveal why the patient is highly susceptible to respiratory pathogens.
A. Smoking directly inhibits B- and T-cell action. B. Smoking can paralyze the ciliary escalator. C. Smoking decreases the activity of neutrophils. D. Smoking decreases the formation and effectiveness of complement proteins.
A(n) ________ group is treated like an experimental group, except for the one variable being tested
Fill in the blank(s) with correct word
Which of the following illustrates altruism?
A) Parent birds spend much of their time and energy feeding their young. B) A mother bird pretends to be wounded to distract a predator away from her young. C) Males sing to attract females as mating partners. D) Birds of a different species care for a cuckoo egg. E) Parent birds clean out their nests.