Which of the following is an example of a dye used in a simple stain?

a. Methylene blue
b. Carbolfuchsin
c. Nigrosin
d. Eosin


Answer: a. Methylene blue

Biology & Microbiology

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An atom has 20 electrons and 20 neutrons. What is the mass of this atom?

A. 10 B. 20 C. 40 D. 80

Biology & Microbiology

During phase "2" in the figure above, the growth is ____ as long as resources are plentiful

a. logical b. logistical c. arithmetic d. exponential e. analytical

Biology & Microbiology

The Kreb Cycle begins with ________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Two species of snails are physically unable to mate. This is an example of

A) mechanical incompatibility. B) ecological isolation. C) behavioral isolation D) geographic isolation. E) temporal isolation.

Biology & Microbiology