How have protozoa typically been classified? by their type of reproduction

by their symmetry

by their mode of locomotion

by their mode of nutrition

What substance acts to prevent sudden ph changes in bodily fluids?

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12

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