The cells and signaling molecules involved in the initial stages of the inflammatory response are _____
A) phagocytes and chemokines
B) dendritic cells and interferons
C) mast cells and histamines
D) lymphocytes and interferons
C
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The electronegativity of nitrogen (N) is 3.0, while the electronegativity of hydrogen (H) is 2.1 . Knowing this, consider how the electrons will be shared in ammonia (NH3). What do you predict about the polarity of ammonia?
A. Each H atom has a partial positive charge B. The N atom has a partial positive charge C. Each H atom has a partial negative charge D. The N atom has a strong positive charge
Compared to uric acid, using urea as the main form of nitrogenous waste requires
a. more energy and water. b. less energy and water. c. more energy and less water. d. the same amount of energy and water. e. less energy and more water.
In the accompanying diagram, ____ is labeled "D"
a. the appendix b. the cecum c. a polyp d. a portion of the small intestine e. the colon
The presence of a buffer in our blood helps maintain homeostasis.
Answer the following statement true (T) or false (F)