Viruses are categorized according to all of the following EXCEPT

A. their method of reproduction, whether asexual or sexual.
B. their type of nucleic acid.
C. the presence or absence of an envelope.
D. size and shape.


Answer: A

Biology & Microbiology

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Discuss two hypotheses that attempt to explain the high species richness in the tropics

What will be an ideal response?

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Complement proteins

1.chemically detect the presence of pathogens. 2.attract phagocytes. 3.form membrane attack complexes. 4.work with cytokines to trigger inflammation. 5.all of the choices

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more efficient in producing carbohydrates

b. predominates in C3 plants in cool weather when water is plentiful. c. predominates in C4 plants on hot days. d. produces the same amount of PGA. e. does none of these.

Biology & Microbiology

The Endosymbiosis theory best describes the origins of peroxisomes in eukaryotes.

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

Biology & Microbiology