An important role of bacteria is:

a. primary producers.
b. decomposers.
c. nitrogen fixation.
d. all of the above


D

Biology & Microbiology

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Which of the following hormones stimulates uterine contractions during the birth process in mammals?

A. oxytocin B. testosterone C. FHS D. chorionic gonadotropin E. LH

Biology & Microbiology

Vascular plants, ranging from tulips to pine trees, have several key advantages over most lower plants, like moss. Name these advantages

What will be an ideal response?

Biology & Microbiology

The term for a close association between organisms of two or more species is

A) symbiosis. B) exotoxin. C) endotoxin. D) mixotrophic.

Biology & Microbiology

Which region(s) of the X chromosome recombine during meiosis?

A) the heterochromain B) the pseudoautosomal regions C) the male-specific region of the Y D) the centromere E) SRY

Biology & Microbiology