The two arms of adaptive immunity work together as follows:
a. ____-mediated responses target antigen in blood or interstitial fluid and involve ____ cells.
b. ____-mediated responses target intracellular pathogens or altered body cells and involve ____ cells and ____ cells.
a. Antibody; B cells
b. Cell; T cells; NK cells
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The most prominent organelle visible in most eukaryotic cells is the
A. cell membrane. B. endoplasmic reticulum. C. nucleus. D. mitochondrion. E. chloroplast.
Which of the following molecules is incorrectly matched with the number of carbon atoms it possesses?
A) citrate; 6 B) ?-ketoglutarate; 5 C) acetyl CoA; 2 D) malate; 5 E) isocitrate; 6
Which heterotrimeric G proteins function by inhibiting adenylyl cyclase?
a) Gi family b) Gq family c) Gr family d) G12/13 family e) Gs family
Arrange these groups in order from most inclusive (most general) to least inclusive (most specific). 1. lobe-fins 2. amphibians 3. gnathostomes 4. osteichthyans 5. tetrapods
A) 4, 3, 1, 5, 2 B) 4, 3, 2, 5, 1 C) 3, 4, 1, 5, 2 D) 3, 4, 5, 1, 2