How are trypanosome diseases similar to malaria?
A) They are transmitted by insect vectors.
B) They cause intermittent fevers.
C) They are acute, self-limiting diseases.
D) They are all endemic to Africa.
Answer: A
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External fertilization is most commonly seen
a. in land animals. b. in plants. c. in aquatic animals. d. during dry seasons. e. among all animals.
What happens as air cools?
a. It rises and releases moisture. b. It sinks and picks up moisture. c. It sinks and releases moisture. d. It rises and picks up moisture. e. It does none of these
The dizzy feeling you encounter when you sit up is being activated by the
A. thermoreceptor in your ear lobe. B. photoreceptor in the skin. C. mechanoreceptor in the vestibular apparatus. D. proprioceptor in the cochlea. E. chemoreceptor in the ear drum.
RNA molecules that have catalytic activity are known as ________.
Fill in the blank(s) with the appropriate word(s).