Question
___________ vaccine gives considerable protection against tuberculosis.
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A heavy ship floats in water because its ______ density is less than that of water.
| Prokaryotic Cell | Eukaryotic Cell | ||
| $1.$ | Size : generally $1$. Size: generally small $(1-10\mu\text{m})1\mu\text{m}=10^{-6}\text{m}.$ | 1. | Size: generally large $( 5-100\ \mu m)$. |
| $2.$ | Nuclear region: .......................... and known as........ | 2. | Nuclear region: well defined and surrounded by a nuclear membrane. |
| $3.$ | Chromosome: single. | 3. | More than one chromosome. |
| $4.$ | Membrane-bound cell organelles absent. | 4. | ................................... |