A chemical characteristic of a cell or particle that causes an immune response is a(n) ____
a. allergy
b. antibody
c. antigen
d. blood type
e. Rh factor
ANSWER: c
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Collectively, the amygdala, olfactory bulbs, hippocampus, and parts of the thalamus and hypothalamus are said to form
A. the limbic system. B. the reticular formation. C. the basal nuclei. D. the sympathetic division. E. the frontal lobe.
Nitrogenous waste products, such as urea and uric acid, are primarily formed because of the digestion of
A) lipids. B) carbohydrates. C) salts. D) proteins.
Exposer to air is necessary for microbial growth.
a. true b. false
Which statement about the application of insecticides is true?
A) To control agricultural pests, pest management uses biological controls, chemicals, or cultural methods, but never a combination of these. B) Simply killing many individuals is often the best way to reduce the size of a pest population. C) Most insecticides kill the pest but not the pest's natural predators. D) Pest species can rebound faster than their predators because the pests often have a higher reproductive rate than predators have.