Answer:
B: Small molecules easily pass between the phospholipids in the cell
membrane.
Explanation:
I did this question on A P E X and I got it wrong
Answer:
What is the problem... nothing is listed??
Explanation:
RNA polymerase is the enzyme that connects and proofreads them.
The best answer is D.
The mass number of an element is the sum of the number of protons and the number of neutrons. Protons and neutrons both weigh about one atomic mass unit or amu.
The nucleus of an atom is made up of protons and neutrons. Both these two types of particles are almost the same size. Almost all the mass of an atom (99%) is in the nucleus. Atomic mass therefore is really a measure of the size of the nucleus.
The answer is "At least 15".
