Which macromolecule is a nucleic acid?
O
A. Triglyceride
B. Protein
O C. Starch
O D. RNA
SUBMIT

The macromolecule that is a nucleic acid is D, an RNA molecule.

Explanation:

Being as both DNA and RNA are nucleic acids, here is an explanation. DNA's structure is in the shape of a double-stranded helix while RNA's is structured as a single-stranded helix. DNA's backbone is made of the sugars deoxyribose and phosphate while RNA's backbone is made of the sugars ribose and phosphate. DNA also contains the bases adenine, thymine, cytosine, and guanine (adenine bonds with thymine and cytosine bonds with guanine) while RNA contains all said bases, except thymine is replaced with uracil (because of this change, the new bases pairings are adenine and uracil and still cytosine and guanine).

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

cells spend most of their time in interphase