___________, such as sea stars, are invertebrate members of the deuterostome lineage. Fill in the blank(s) with the appropriate word(s)
ANSWER: Echinoderms
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T-independent antigens
A. include polysaccharides. B. require the involvement of T cells. C. interact with MHCI molecules. D. are usually proteins. E. include polysaccharides AND are usually proteins.
Which system produces blood cells?
a. endocrine b. skeletal c. muscular d. defense e. integumentary
Bivalves are filter-feeders that draw a current of water in through a tube called the ________, across their gills, where tiny food particles are captured.
a. cephalopod b. excurrent siphon c. incurrent siphon d. gill tube e. cnidocyst
Anti-human antibodies (specific for human IgG antibodies) with fluorescent molecules covalently attached are used for
A) direct fluorescent antibody tests. B) indirect fluorescent antibody tests. C) direct ELISAs. D) indirect ELISAs. E) immunodiffusion tests.