The reduction of nitrogen gas to ammonia is called nitrogen (fixation/cycling/oxidation).
Fill in the blank(s) with the appropriate word(s).
fixation
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The Meselson-Stahl experiments supported the model of dispersive DNA replication
Indicate whether the statement is true or false
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
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
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