B cells present antigens to helper T cells via __________________.
What will be an ideal response?
class II MHC molecules
Biology & Microbiology
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Speculate on the possibility of life on other planets. Use representatives of the hyperthermophilic Archaea and hydrogen chemolithotrophs as a guide to this discussion
What will be an ideal response?
Biology & Microbiology
Eukaryotic mRNA but not prokaryotic mRNA contain 5' untranslated regions
A. True B. False
Biology & Microbiology
What is the correct rank order for relative toxicity (most to least) of the primary nitrogenous wastes generated by different animals?
A. ammonia ? urea ? uric acid B. uric acid ? ammonia ? urea C. urea ? uric acid ? ammonia D. ammonia ? uric acid ? urea E. urea ? ammonia ? uric acid
Biology & Microbiology
Chromosomes and genes are replicated during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase
Biology & Microbiology