The relationship between strands of RNA and DNA during transcription is
a. antagonistic.
b. opposite.
c. complementary.
d. an exact duplicate.
e. unrelated.
ANSWER: c
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Naegleria fowleri is a free-living ________ that causes infection by ________
A) amoeba / entering through the nose and burrowing into the brain B) fungus / entering the lungs when contaminated soil is disturbed C) flagellated protist / crossing the intestinal mucosa into the blood D) protist / entering the vagina in women, the prostate and seminal vesicles of men, or the urethra of both males and females
Prokaryotes
A. lack a true nucleus. B. lack true DNA. C. use the cell membrane rather than ribosomes for making proteins. D. contain numerous organelles. E. are relatively benign cells incapable of harming organisms.
What organisms are susceptible to being smothered by a coating of oil in sediments?
a. Fish b. Invertebrates c. Birds d. Marine mammals
The proposed advantages of bipedalism, which characterizes hominin evolution, include making it easier to
A. travel and move about. B. collect food from overhead. C. carry their young from place to place. D. carry food back to their camp or their young. E. All of these are correct.