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.
1. FALSE
2. TRUE
3. FALSE
4. TRUE
5. TRUE
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Symptoms of phenylketonuria (PKU) may be
minimized or suppressed by a diet low in a. serine. b. glycine. c. phenylalanine. d. proline. e. glutamic acid.
In deuterostomes, the blastopore develops into the mouth. Indicate whether the statement is true or false
Proteus species often cause Urinary Tract Infections
a. true b. false
A biologist from the United States Forest Service estimated the population of guppies in a pond to be 30,000 per cubic meter. This is also known as the
A. population density. B. density-dependent factor. C. natality. D. None of these answers is true.