How would the exchange of molecules between an organism and its environment be affected if the membrane were less permeable? (3 points)
a) Fewer membrane proteins would be needed to carry out active transport of nutrients.
b) Molecules needed for growth would have more difficulty diffusing across the membrane.
c)Organisms would be more susceptible to harmful substances crossing the membrane.
d) The membrane would rearrange to form a single phospholipid layer to transport materials.

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.

age range would be the answer

well, i believe that the answer is 2. : 3