Which of the following microorganisms use M protein to avoid destruction of a phagocyte?
a. Coxiella burnetii
b. Streptococcus pyogenes
c. Streptococcus pneumoniae
d. Haemophilus influenzae
Ans: b. Streptococcus pyogenes
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If a lung were to be found in a mollusc, where would it be located?
A) mantle cavity B) coelom C) incurrent siphon D) visceral mass E) excurrent siphon
Which of the following statements regarding photosystem II is FALSE?
A. Photosystem II encompasses a series of redox reactions. B. Photosystem II contains a chlorophyll molecule that absorbs light at 680 nm. C. Photosystem II strips an electron from water for direct transfer to the electron transport chain. D. Photosystem II oxidizes water to form oxygen. E. Photosystem II contains a series of pigments where energy is transferred by resonance energy transfer.
What is the structural unit of interacting tissues called?
a. Organ b. Cell c. Atom d. Tissue e. Community
MHC incompatibility causes rejection of transplanted organs and at least a 75% match is needed for successful transplants between unrelated people.
a. true b. false