Taste cells that respond to sour specifically interact with ____
a. sodium ions
b. hydrogen ions
c. quinine
d. sugars
e. glutamate
ANSWER: b
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Oaks, birches and corn produce both staminate and pistillate flowers on the same plant. What term describes this type of plant?
A. monoecious B. dioecious C. hermaphroditic D. complete E. determinant
Zach undergoes a sperm analysis and is upset to learn that he has oligospermia. This means that
A) he has cancer of the spermatogonia, and his sperm will never mature. B) he makes too many sperm, and they will crowd and kill each other. C) he makes too few sperm, lowering the probability of one sperm successfully reaching and fertilizing an oocyte. D) his sperm have two heads, each of which contains an entire genome of DNA, making them too heavy to swim to an oocyte.
The founder effect can result in ______
A. Speciation B. Allele mutation C. Increased incidence of genetic abnormalities D. Inbreeding
Which of the following is NOT a characteristic of a genus name?
A) it is usually an adjective. B) it is written before the specific epithet. C) it is always capitalized. D) it is either underlined or in italics. E) it is one of two names used to identify an organism.