Chitin-reinforced bristles that protrude outward from the body wall and are used by most segmented worms to anchor
themselves against a substrate are called ____.
a. metanephridia
b. parapodia
c. septa
d. clitella
e. setae
ANSWER: e
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Two babies are mixed up in the hospital nursery. The blood types of Couple 1 are A and O and the blood types of Couple 2 are AB and B. Baby Joe has blood type O and Baby Jane has blood type B. Who are the parents of Baby Joe and Baby Jane?
A. Couple 1, Baby Joe; Couple 2, Baby Jane B. Couple 1, Baby Jane; Couple 2, Baby Joe C. Couple 1, Baby Joe; Couple 2 could not be the parents of either baby D. Couple 2, Baby Joe; Couple 1 could not be the parents of either baby E. From these combinations of blood types, it is impossible to determine
According to the acid-growth hypothesis, auxin causes increased acidity in cell walls, which then
activates ____ that disrupt(s) bonds between cellulose microfibrils, allowing cell expansion.
a. a membrane potential b. AUX1 transporters c. proteins called expansins d. an mRNA e. K+ ions
Enzymes that function inside a cell are ________.
A. regulated enzymes B. endoenzymes C. constitutive enzymes D. exoenzymes E. apoenzymes
In nonrandom mating each individual in a population has an equal chance of mating with any
individual of the opposite sex.. _________ Indicate whether the statement is true or false.