An infectious disease that is reported occasionally at irregular intervals in random locations is

a. endemic
b. sporadic
c. spontaneous
d. rare


Ans: b. sporadic

Biology & Microbiology

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In a plaque assay, the number of infectious virions is usually identical to the number of virus particles present.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The life cycle of a sexual reproducing organisms includes:

A. mitosis and meiosis. B. mitosis, meiosis, and fusion of the gametes. C. meiosis and fusion of gametes D. only mitosis E. only meiosis

Biology & Microbiology

Susie just squished a cockroach and its pale yellow hemolymph squirted out on the floor. If Susie analyzed the hemolymph, she would expect to find all of the following EXCEPT

A.  sugars. B.  water. C.  ions. D.  erythrocytes. E.  amino acids. F.  cells that protect against foreign microbes. Clarify Question What is the key concept addressed by the question? What type of thinking is required?   Gather Content What do you already know about hemolymph? What other information is related to the question?   Choose Answer Given what you now know, what information is most likely to produce the correct answer?   Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Archaeans are similar to bacteria in all of the

following ways EXCEPT a. size. b. shape. c. membrane phospholipids. d. absence of a nucleus. e. presence of operons.

Biology & Microbiology