________________ have a polar head and two non-polar tails and combine with ______ to make cell membranes.
Fill in the blank(s) with the appropriate word(s).
Ans: phosolipids; protein
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Denitrifying bacteria are often facultative anaerobes, capable of performing other forms of respiration or fermentation as well as nitrate reduction
Indicate whether the statement is true or false.
Epinephrine and norepinephrine are ____ hormones
a. steroid b. glucocorticoid
c. mineralocorticoid d. gonadotropin e. catecholamine
Which process of the water cycle releases heat into the atmosphere?
A) condensation B) runoff C) evaporation D) ground-water discharge
Fever helps the body fight infection in which of the following ways?
a. Increased body temperature decreases phagocytosis. b. Fever causes the creation of lysosomes. c. Fever inhibits the growth of some microorganisms. d. Fever reduces lymphocyte activity. e. Fever increases capillary permeability.