An organism that can exist in both oxygen and oxygen-free environments is a(n)

A. facultative anaerobe.
B. microaerophile.
C. obligate anaerobe.
D. obligate aerobe.
E. aerobe.


Answer: A

Biology & Microbiology

You might also like to view...

Developing truffles produce a chemical that attracts what kind of organism for spore dispersal?

A. pigs B. flies C. ants D. amphibians E. birds

Biology & Microbiology

When one plant is shaded by another, why is the ratio of far-red to red light increased compared to an unshaded plant?  

A.  Phytochrome in the taller plant absorbs most of the red light. B.  Auxin absorbs mostly far-red light. C.  As light passes through the leaves of the taller plant, most of the red light is absorbed by chlorophyll. D.  Far-red light mostly reflects off the surface of the soil while red light is mostly absorbed. E.  Shade is enriched in far-red wavelengths of light.

Biology & Microbiology

Organisms made up of one cell are said to be ________

Fill in the blank(s) with correct word

Biology & Microbiology

Sponges _____

A) have larvae which are motile and move via the motion of cilia B) are the simplest diploblastic animals C) have a nerve net but not a central nervous system D) have feeding cells called dinoflagellates

Biology & Microbiology