The difference between innate immunity and adaptive immunity is that
A) adaptive immunity attacks pathogens; innate immunity attacks microbes.
B) innate immunity targets cancers and transplants; adaptive immunity targets viruses and bacteria.
C) innate immunity is fast and generalized; adaptive immunity is slow and specific.
D) adaptive immunity releases cytokines; innate immunity produces antibodies.
C) innate immunity is fast and generalized; adaptive immunity is slow and specific.
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What role, if any, did polysaccharides play in chemical evolution?
A) Polysaccharides catalyzed chemical reactions. B) Polysaccharides used complementary pairing between monosaccharides to copy themselves. C) Glycosidic linkages formed spontaneously between monosaccharides. D) Polysaccharides played little, if any, role in chemical evolution.
Which of the following organisms is
responsible for the production of cheese, yogurt, and sour cream?
a. Lactobacillus b. Saccrharomyces c. Clostridium d. E. coli e. more than one of these
A patient enters your clinic with a suspected helminthic infection. In support of this diagnosis, you suspect elevated levels of which antibody in the patient's serum?
A. IgE B. IgG C. IgM D. IgD
In cohesion-tension theory, what molecular interactions allow water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?
A. Ionic bonds B. Covalent bonds C. Hydrogen bonds D. Polar bonds E. Nonpolar bonds