MCQ
Chargaff's rules are applicable to
- Asingle stranded $RNA.$
- Bsingle stranded $DNA$ and $RNA.$
- Csingle stranded $DNA.$
- ✓double stranded $DNA.$
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Reason : Transplanted tissue has antigens which stimulate the specific immune response of the recipient.
| Column $- I$ | Column $- II$ |
| $(a)$ Phytoplankton, grass | $(p)$ First trophic level |
| $(b)$ Man, Lion | $(q)$ Herbivore |
| $(c)$ Zooplankton, Cow, Grasshopper | $(r)$ Third trophic level |
| $(d)$ Birds, Wolf | $(s)$ Top carnivore |
| S.No. | Column$-I$ | Column$-II$ | |
| $A.$ | Amoebiasis | $i$ | Teporema pallidum. |
| $B.$ | Diphtheria | $ii$ | Use only sterilized food and water. |
| $C.$ | Cholera | $iii$ | $\text{DPT}$ vaccine. |
| $D.$ | Syphilis | $iv$ | Use oval rehydration therapy. |
