Which statement is a tenet of the cell theory? A. Cells are the fundamental unit of life.

B. Cells contain genetic material, a plasma membrane, ribosomes, and cytosol.

C. Cells are characterized by the ability to ingest materials, generate waste products, and move.

D. Cells require oxygen for respiration.

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.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Diffusion and osmosis are forms of passive transport