The alternative pathway of complement cascade activation begins with ________ binding to the surface of a microbe

A) C1
B) C3a
C) complement factor B
D) C5a
E) C5b


C

Biology & Microbiology

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How does the fruit of a plant aid in the plant's reproduction?

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In all of the following characteristics, prokaryotes differ from eukaryotes except in  

A.  cell size. B.  multicellularity. C.  chromosomes. D.  nucleic acids as the hereditary material. E.  organelles.

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Sperm undergo capacitation

A) in the testicles as sperm develop. B) in the woman's body. C) just after the second polar body is ejected. D) immediately following a sperm's penetration of an oocyte.

Biology & Microbiology

Our knowledge of existing species is limited and biased toward __________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology