The rickettsias are divided into groups based loosely on

A) the types of clinical disease they produce.
B) their insect vectors.
C) taxonomy.
D) their biochemical requirements.


Answer: A

Biology & Microbiology

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Connective tissue is the most variable of the tissue types. Which one of the following is not categorized as connective tissue?

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The reactions in the pathways of glycolysis and the citric acid cycle harvest the high-energy electrons stored in glucose. Therefore, these pathways _______________

A. are catabolic pathways B. are anabolic pathways C. take place in animal cells, but not in plant cells D. involve the reduction of glucose and its metabolic intermediates

Biology & Microbiology

Four of the five vitamins listed below are members

of the B-complex vitamins. Select the exception. a. ascorbic acid b. folic acid c. pantothenic acid d. riboflavin e. thiamine

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Suppose a large population exists on a continent, and a new population is formed by the migration of a few individuals to an island some distance away

The fact that the alleles being carried to this island are not going to be a complete and representative set, as compared to the continental population, is a case of genetic drift known as the ________. [two words] Fill in the blank(s) with correct word

Biology & Microbiology