The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling/oxidation).

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


fixation

Biology & Microbiology

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The Meselson-Stahl experiments supported the model of dispersive DNA replication

Indicate whether the statement is true or false

Biology & Microbiology

Four of the five senses listed below belong to the

same category. Select the exception. a. touch or pressure b. olfaction c. balance (equilibrium) d. hearing e. muscle sense

Biology & Microbiology

Members of the phylum Thaumarchaeota produce a membrane lipid that differs from other diglycerol tetraethers found in Proteoarchaeota in that ________.

A. it contains a cyclohexane ring that promotes membrane fluidity at lower temperatures B. it contains several cyclohexane rings that stabilize the membrane at high temperatures C. it contains several cyclopentane rings that stiffen the membrane at lower temperatures D. it contains a single cyclohexane ring within the phosphilipid bilayer that promotes membrane fluidity

Biology & Microbiology

For a healthy, adult female what percentage of her body weight is water?

a. 10 percent b. 25 percent c. 40 percent d. 50 percent e. 60 percent

Biology & Microbiology