What is one reason chlorination would be preferred over ultraviolet radiation?
a) chlorine only eliminates visible impurities and is ineffective against microorganisms.
b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms.
c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water.
d) ultraviolet radiation is more effective because it reduces the ph of water and destroys all bacteria.

What are the similarities between photosynthetic and anaerobic organisms?

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?