Which is true of Mycobacteria?

A. they cause leprosy
B. they cause tuberculosis
C. they are acid-fast
D. all of the above


Ans: D. all of the above

Biology & Microbiology

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Diagram the basic steps of a stretch reflex arc.

What will be an ideal response?

Biology & Microbiology

Why do species with large body sizes typically have lower population densities?

a. each large organism consumes more available resources b. there are not enough individuals to grow the population c. genetic diversity is low d. small organisms have more potential mates e. large organisms do not like living near one another

Biology & Microbiology

If a child belongs to blood type O, he or she

could NOT have been produced by which set of parents?

a. type A mother and type B father b. type A mother and type O father c. type AB mother and type O father d. type O mother and type O father e. type AB mother and type B father

Biology & Microbiology

Ecosystems may lose nitrogen through

a. denitrification. b. nitrification. c. nitrogen fixation. d. all of these. e. none of these

Biology & Microbiology