Which of the following is true about differentiated cells?

A. They have different DNA which allows them to perform different tasks.

B. They all contain the same DNA but they express different genes.

C. They can turn into whatever type of cell your body needs to ensure survival.

D. Each cell can perform various functions for maximum efficiency.

E. There are no more than 200 types in the body or else there would be too many to maintain.

B

Explanation:

All cells contain the same DNA, but there regulators that control which genes are expressed in the cell

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's