Tayyaba · 2026-05-15T09:17:25.486Z

aap ke pas chrome book hai? aap ne screenshot kese liya?

Dr.Zoima · 2026-05-15T09:23:57.274Z

leptop ha

Maheera Kaleem · 2026-05-15T09:26:41.997Z

Option a

Maheera Kaleem · 2026-05-15T09:27:21.971Z

Guanine as purines are double ring structure

SHUMAILA Samad · 2026-05-15T09:40:51.613Z

Opt A correct hai qk purines k structure Mai double ring hota hai

Sama Abid · 2026-05-15T09:56:32.749Z

Guanine

Dr.Zoima · 2026-05-15T11:14:07.023Z

thanks

Jannat khalil · 2026-05-15T11:58:43.942Z

• Memory Tricks: • Purines: "Pure As Gold" (Purine = Adenine, Guanine). • Pyrimidines: "CUT the Pye" (Cytosine, Uracil, Thymine = Pyrimidines).

Jannat khalil · 2026-05-15T11:59:08.596Z

Easy trick 🙂