The information storage molecules of cells are called:
A. hormones.
B. proteins.
C. phospholipids.
D. enzymes.
E. nucleic acids.
E. nucleic acids.
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As a population geneticist, you find a species of snails with more genetic diversity than humans. What does this mean?
A. The snails have more genes on their chromosomes than humans. B. There is more variety in gene pool of snails than humans. C. The snails have more DNA than humans. D. The snails have more mutations occurring than humans. E. There is not enough information to answer the question.
Viruses may not be cultivated in
A. live organisms. B. embryonated chicken eggs. C. tissue culture. D. blood agar.
Three of the four answers listed below are related by energy requirements. Select the exception
a. active transport b. endocytosis c. facilitated diffusion d. exocytosis
Which of the following scenarios represents a situation where a suspected disease-causing microbe would not be consistent with one or more of Koch’s postulates?
A. The microbe is found in all patients with a particular disease. B. Some healthy individuals possess the microbe. C. The microbe can be isolated and grown in pure culture D. Injection of the microbe into an animal host does not produce disease symptoms.