The nucleus is a double membrane that encloses the DNA.Inside the nucleus the DNA acts as the template to produce mRNA and ribosomes; to exit the nucleus these molecules must
A) diffuse through the double membrane into the cytoplasm.
B) pass through carrier proteins which use ATP to transport the molecules.
C) attach to carrier molecules that carry them through the membrane.
D) pass through pores that span both membranes.
E) be transported across the two membranes by means of vesicles.

Question

Quizplus · Accepted Answer

The molecules must pass through pores that span both membranes in order to exit the nucleus. The nuclear pores allow controlled transport of molecules between the nucleus and cytoplasm.

The Nucleus Is a Double Membrane That Encloses the DNA