Most allergy medicines contain antihistamines that block the actions of histamine. These drugs reduce cold symptoms by directly
A. lysing virus-infected cells and preventing further propagation of the pathogen.
B. stimulating components of the immune system through the release of cytokines.
C. blocking or reducing the inflammation response in mucous membranes.
D. stimulating the production of specific antibodies.
E. recruiting macrophages to the nasal epithelium.
C. blocking or reducing the inflammation response in mucous membranes.
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The offspring of a cross between two individuals that breed true for different forms of a trait are
__________. Fill in the blank(s) with the appropriate word(s).
Four of the five animals listed below are related
Select the exception. a. sea star b. sea anemone c. sea urchin d. brittle star e. sea cucumber
A normal heartbeat is not set or initiated by the nervous system, which may be expected since the heart has electrical activity. If not the nervous system, then what actually regulates or initiates a normal heartbeat?
What will be an ideal response?
Quinolones disrupt the activity of ________, and penicillins target ________; so, BOTH drugs will prevent pathogens from multiplying
a. DNA gyrase / cell wall biosynthesis b. DNA gyrase / protein biosynthesis c. RNA elongation / cell wall biosynthesis d. RNA elongation / protein biosynthesis