Astudent designed a model of active transport. in order to refine the model to be more accurate, what should be added to the diagram?
a) the addition of adp being converted to atp should be added to the model to show that energy is being stored during the process.
b) the addition of atp being converted to adp should be added to the model to show that energy is being used to transport materials.
c) the addition of a negative charge to the outside of the cell and a positive charge to the inside of the cell should be added to show that voltage differences are used in the transport process.
d) the addition of a positive charge to the outside of the cell and a negative charge to the inside of the cell should be added to show that voltage differences are used in the transport process.

Picture of the diagram?

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.

the answer is cell division : )