A(n) is one of two or more alternate forms of a gene.

An allele is an alternative form of a gene that is located at a specific position on a specific chromosome.  An organism which has two different alleles of the gene is called heterozygous.

what? are the statements?

in addition to being able to metabolize, grow, digest food, and excrete wastes, what other functions must an organism perform if it is to survive? survival also depends on the ability to maintain one's boundaries, to move, to respond to stimuli, and to reproduce. oxygen is a survival need.