Which statements best explains why the cell membrane assembles as a phospholipid bilayer? Select two. Membrane proteins anchor in the membrane, like scaffolds, to aid in the transportation of molecules.

Cholesterol in the membrane maintains the membrane's fluidity and reduces permeability.

Hydrophobic tails avoid interacting with polar, aqueous environments, facing the center of the bilayer.

Hydrophilic heads of the phospholipids interact with the polar, aqueous environment inside the cells, and outside the cell.

About __ of the mass of the cell is water

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white

What will happen to the amount of food available as a pondwater ecosystem ages