Ozone is a very effective disinfectant.
Answer the following statement true (T) or false (F)
True
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During fertilization, the acrosomal contents _____
A) block polyspermy B) help propel more sperm toward the egg C) digest the protective jelly coat on the surface of the egg D) nourish the mitochondria of the sperm E) trigger the completion of meiosis by the sperm
Beta-lactamases
A. bind to penicillin-binding proteins. B. bind to peptides. C. prevent the linking of glycan chains in peptidoglycan. D. break the beta-lactam ring.
Which of the following is not true of schistosomiasis?
A. Larvae called cercariae can penetrate intact skin through hair follicles. B. Freshwater snails are the intermediate host. C. Schisotosomiasis cases are beginning to appear in the southern U.S., as climate change brings warming waters to the region. D. Schistosomiasis covers its outer surface with blood proteins to escape detection by the immune system. E. Schistosomiasis is caused by blood flukes.
A branching web of hyphae is a:
A) mycelium. B) leaf. C) spore. D) root.