Which of these terms is most inclusive?
a. monosaccharide
b. starch
c. polysaccharide
d. disaccharide
e. carbohydrate
E
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Which of the following must be present for something to be considered living?
a. Movement b. Sentience c. Organs d. One or more cells
The site on the surface of an enzyme where a substrate binds is called the:
A. active site B. allosteric site C. binding site D. reactive site
Which statement best describes the reproductive isolation between populations of Rhagoletis flies, one of which is found on apple trees and the other that is found on hawthorn trees?
A) Hybrid offspring of the two populations are sterile. B) Hawthorn trees and apple trees grow in different areas, so the two populations do not encounter each other. C) Male flies of one population cannot physically mate with females from the other population. D) Apple-liking males are more likely to encounter apple-liking females than hawthorn-liking females. E) Eggs laid by female flies mated with a male from the "wrong" population do not develop.
The active stage of a protist’s life cycle is known as:
A. Pupa B. Cyst C. Trophozoites D. Ectospores