The nucleus is the house of the genetic material, yet it allows certain molecules to cross into the cytoplasm. What evidence can you use from the model above to support this claim?

Many proteins exchanges between cytoplasm and nucleus.

Explanation:

Proteins such as importins and exportins exchanges between cytoplasm and nucleus because of their need in these two sides. Importins are the proteins which enters in the nucleus from cytoplasm due to need for the nucleus while on the other hand, the exportins proteins exit the nucleus and enters the cytoplasm because they are formed in nucleus and needed by the cytoplasm of the cell.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

so whats the answer