MCQ
..............is common for both $DNA$ and $RNA$ but.............is present only in $DNA$
- AUracil, thymine'
- BCytosine, thymine'
- ✓Guanine, thymine
- Dcytosine, uracil
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$(i)$ The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
$(ii)$ ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
$(iii)$ Ribosomes are involved in protein synthesis.
$(iv)$ Mitochondria help in oxidative phosphorylation and generation of $ATP$.
| A. Lemon gross oils | I.Polymericsubstance |
| B. Rubber | II. Terpenoids |
| C. Diterpene | III. Essential oils |
| D. Carotenoids | IV. Drugs |