MCQ
Which of the following switch off lac operon
- AStructural gene
- ✓Regulator gene
- COperator gene
- DPromoter gene
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| Column $- I$ | Column $- II$ |
| $(1)$ Bacterial membrane | $(p)$ Chitinase |
| $(2)$ Plant cells | $(q)$ Ribonuclease |
| $(3)$ Fangus membrane | $(r)$ Lysozyme |
| $(4)\; RNA$ molecule | $(s)$ Cellulase |