The low-water portion of the rocky intertidal zone is dominated by 7)
a) mussels
b) hermit crabs
c) red and brown algae and surf grasses
d) fiddler crabs
e) limpets

Explain why phospholipid molecules form a bilayer. (3 marks)

15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies