Polyploidy is
A. common in plant species.
B. common in fungal species.
C. common in animal species.
D. common in bacterial species.
E. All answers are correct.
Answer: A. common in plant species.
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Answer the following statements true (T) or false (F)
1. Viruses are the smallest infectious agents. 2. Rickettsia spp. and Chlamydia spp. cannot be grown on artificial media. 3. Prions are infectious RNA molecules. 4. HIV is an enveloped, double-stranded RNA virus. 5. Organisms in the genus Vibrio are curved bacilli.
The gene for human insulin has been successfully cloned in
A. S. aureus. B. E. coli. C. rhinovirus.
Acetic acid gives vinegar its sour taste. The functional group of this acid is
A. -OH B. -NH2 C. -SH D. -COOH E. -CO
In the circulatory system, the largest pressure drop occurs across which blood vessels?
A) arteries B) veins C) capillaries D) arterioles E) venules