Nitrogen makes up a significant part of which class of biological compounds?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Awire-hair terrier and a smooth-hair terrier are mated. the offspring produced are 6 wire-hair puppies and 2 smooth-hair puppies. a. what pattern of inheritance best describes this situation? b. what is the genotype(s) of the wire-haired puppies? of the smooth-haired puppies? c. what would be the expected genotype and phenotype ratios of a mating between 2 wire-haired terriers that are heterozygous?