Amino acids must have all BUT which of the following?
A. an amino group
B. a phosphate group
C. a carboxyl group

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red. b) the pollen grains will be pure blue. c) the pollen grains will have red interiors and blue exteriors. d) the pollen grains will have blue interiors and red exteriors.

What is the inability of an individual or a society to achieve a minimum standard of living known as ?

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above