What is NOT TRUE about the cell membrane Phospholipid bilayer
It controls what enters and leaves the cell
Semipermeable
Contains digestive enzymes

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

In what part of a chloroplast does glucose production occur? a. atp synthase b. photosystem ii c. photosystem d. stroma

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into