Question

To which carbon does the base in deoxyribonucleoside bind? What are the 4 types of deosyribonucleosides and what do they look like? What are the ribose versions of these molecules and how do their structures look?

Answer 1

The base in a deoxyribonucleoside binds to the 1' carbon of deoxyribose, and the four types of deoxyribonucleosides are adenine, cytosine, guanine, and thymine. In RNA, these are ribonucleosides with ribose instead of deoxyribose and uracil replaces thymine.

Step-by-step explanation:

The nitrogenous base in a deoxyribonucleoside binds to the 1' carbon of the deoxyribose sugar. The four types of deoxyribonucleosides in DNA are composed of the base adenine (A), cytosine (C), guanine (G), and thymine (T), each attached to a deoxyribose sugar molecule. The structures of these bases differ in that adenine and guanine are purines with a double ring, whereas cytosine and thymine are pyrimidines with a single ring.

The ribose versions of these molecules, found in RNA, have a similar structure except that the sugar component is ribose instead of deoxyribose; ribose has a hydroxyl (OH) group at the 2' position rather than a hydrogen (H). In RNA, thymine is replaced by uracil (U). Thus, the bases in RNA are adenine (A), cytosine (C), guanine (G), and uracil (U), each attached to a ribose sugar molecule.