What is true about the structure or function of the plasma membrane? Hydrophilic molecules attract the water the cell requires.

It is made entirely of integral proteins.

The double layer prevents anything from entering the cell.

The processes of endocytosis and exocytosis occur here.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring