Will someone please help me?? Which macromolecule is a main component in cellular membranes and imparts its hydrophilic and hydrophilic nature?
a) Carbohydrates
b) Water
c) Proteins
d) Fats

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids