____ of the species of bacteria are pathogens. 

A. All
B. The majority
C. About half
D. A minority


D. A minority

Biology & Microbiology

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Which hormone is involved in maintaining the gamete or egg cell in females?

A. estradiol B. progesterone C. gonadotropin-releasing hormone D. follicle-stimulating and luteinizing hormones E. All of the choices are correct.

Biology & Microbiology

In 1970 Stanier proposed that classification be based on

A. evolution. B. Gram stain. C. physiology. D. DNA sequence.

Biology & Microbiology

Hormonal controls

What will be an ideal response?

Biology & Microbiology

________ is a mixotrophic protozoan that is able to combine autotrophic and heterotrophic nutritional modes.

A. Euglena B. Giardia C. Amoeba D. Plasmodium

Biology & Microbiology