There is a need for glucose inside a cell, but the glucose molecule is too large to pass through the cell membrane by simple diffusion. how does the cell solve this problem?

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.

The pattern of this wave changes between its beginning and end. what is true about the amplitude and wavelength of the wave when the pattern changes?

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere