Which of the following could be a fat?
A. C2H5OH
B. C6H12O6
C. C2H5NO2
D. C51H97O6
D. C51H97O6
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A hydrocarbon skeleton is covalently bonded to an amino group at one end and a carboxyl group at the other end. When placed in water this molecule would function _____
A) only as an acid because of the carboxyl group B) only as a base because of the amino group C) as an acid and a base D) as neither an acid nor a base E) It is impossible to determine how it would function, based on the provided information.
The first example of an antimicrobial drug synthesized in the laboratory was
A. penicillin. B. sulfa. C. erythromycin. D. Salvarsan.
The nutrient enrichment of an aquatic ecosystem is called ____
a. phosphorylation b. denitrification c. nitrification d. eutrophication e. ammonification
A population of hummingbirds with a variety of beak sizes finds a new food source in a plant that has a long trumpet flower with nectar at the bottom of the trumpet. Over time, these hummingbirds develop longer beaks. This is an example of
A) directional selection. B) stabilizing selection. C) disruptive selection. D) sexual selection. E) genetic drift.