DNA is a molecule found in all cells. Which problem does this model of DNA solve?

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

i believe your answer would be c.. : )

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602