Antibody-mediated immunity is created by
a. "killer" T cells.
b. dendritic cells.
c. helper T cells.
d. B cells.
e. phagocytes.
D
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In the fungus pictured, which of the following structures is indicated by B?
A. hyphae B. mycelium C. fruiting body D. spores E. rhizoid
Points of control in eukaryotic gene expression include
_____ RNA processing. _____ translation. _____ transcription. _____ post-translation.
________ and ________ groups are negatively charged functional groups of carbon, whereas the ________ group is a positively charged functional group.
Fill in the blank(s) with the appropriate word(s).
Thick, water-storing leaves and stems and shallow, spreading roots are adaptations to
A) deserts. B) tropical rain forests. C) northern coniferous forests. D) tropical scrub forests. E) temperate deciduous forests.