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.
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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.
Structurally, starch exists as both unbranched polysaccharide chains called ________ and branched polysaccharide chains called ________.
Fill in the blank(s) with the appropriate word(s).
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
How is mimicry helpful to organisms? Give an example
What will be an ideal response?