Pollination is an example of ________.

a) a possible source of new drugs
b) chemical diversity
c) an ecosystem service
d) crop pest control


Ans: c) an ecosystem service

Biology & Microbiology

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Schleiden and Schwann stated the "cell theory," which in its modern form says:

A. all organisms are composed of one or more cells, all cells require oxygen and all cells arise by division of other cells. B. all organisms are composed of one or more cells, all cells are the smallest living things and all cells arise by division of other cells. C. all organisms are composed of one or more cells, all cells arise spontaneously and all cells vary in size and shape. D. all cells will arise spontaneously, all cells require oxygen and all cells are composed of one or more cells.

Biology & Microbiology

A pathogen is

a. a disease. b. an organism that causes a disease. c. a substance that kills bacteria. d. the same as a heterocyst.

Biology & Microbiology

Pyrimidine dimers are typically caused by the mutagen 2-amino purine

Indicate whether the statement is true or false

Biology & Microbiology

The codon that signals the end of a growing polypeptide is called a _________ codon

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

Biology & Microbiology