Which of the following is not true of a codon? a. it extends from one end of a trna molecule. b. it never codes for more than one amino acid. c. it may code for the same amino acid as another codon. d. it consists of three nucleotides. e. it is the basic unit of the genetic code.

How do the kidneys affect homeostasis

Explain why you think this diagram shows what happened to the carbon in the biodome.

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?