If a molecule is too large to slip through the spaces in the membrane, how will that molecule enter the cell?
a. the molecule will shrink so that it can fit in the spaces.
b. the molecule will move through a protein channel.
c. the molecule will not enter the cell.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.