Acell can only grow so large in size, because
a. it's surface to volume ratio decreases as the cell becomes larger.
b. it's ability to exchange materials would happen more quickly as the cell grows.
c. it's ability to exchange materials is affected by a growing surface to volume ratio.
d. it's surface to volume ratio decreases as the cell becomes smaller.

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.

What are simmilarities and differences between anaerobic respiration in animal and yeast cells? would prefer to get simmilarities as i already got some differences. you!

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america