Nitrogen is made available to aquatic ecosystems by 

A. Bacteria.
B. Cyanobacteria.
C. Archaea.
D. All of the above are correct.


D. All of the above are correct.

Biology & Microbiology

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Structurally, starch exists as both unbranched polysaccharide chains called ________ and branched polysaccharide chains called ________.

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

Biology & Microbiology

Gay matter is located in the ____ of the cerebrum

a. outer region b. inner region c. ventricle d. right, but not left, hemisphere e. left, but not right, hemisphere

Biology & Microbiology

How is mimicry helpful to organisms? Give an example

What will be an ideal response?

Biology & Microbiology

The fluid nature of the membranes is attributed to a lateral movement of  

A.  protein channels. B.  phospholipid molecules. C.  antigen molecules. D.  pumps such as the proton pump. E.  the entire lipid bilayer.

Biology & Microbiology