Which of the following is an unwise use of antibiotics?
A. not saving unused antibiotics
B. taking antibiotics only to treat the infection for which they were prescribed
C. not taking antibiotics for a viral infection
D. discontinuing antibiotics when you feel better
E. not skipping doses of antibiotics
Answer: D
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A plant species where each plant can only make either male or female flowers is called a ____ species
and always has ____ flowers.
a. monoecious; complete b. dioecious; imperfect c. dioecious; complete d. monoecious; imperfect e. monoecious; perfect
Do any of the dinosaurs appear to be omnivores?
a. Yes b. No
Most of today's animal phyla appear in the fossil record within a short span of 25 million years beginning about 530 MYA. When researchers analyzed the DNA evidence that might relate sponges to the modern phyla, what unexpected result did they find?
A. Many development genes thought to be specific to eumetazoans were found in sponges. B. The entire genome of sponges was found to be very different in gene diversity from the genomes of other phyla. C. Samples of the living sponge Oscarella carmela were found to be relatively unchanged from fossil sponge DNA samples. D. Most of the developmental genes found in eumetazoans are absent in the sponge Oscarella carmela. E. All of the answer choices are correct.
The DNA molecules contain six different bases
a. True b. False Indicate whether the statement is true or false