Double unit membrane is absent in:
1. Ribosomes
2. Nucleus
3. Plastids
4. E.R
Which of the following ribosomes are engaged in protein synthesis in the animal cell:
| 1. | Ribosomes that occur on the nuclear membrane and E.R. |
| 2. | Ribosomes of only cytosol |
| 3. | Ribosomes of only nucleolus and cytosol |
| 4. | Ribosomes of only mitochondria and cytosol |
Ribosomes are produced in:
1. Nucleolus
2. Cytoplasm
3. Mitochondria
4. Golgibody