1. | the enclosure has pores which membranes do not |
2. | the enclosure is made up of two membranes |
3. | the chemical composition is inconsistent with cellular membranes |
4. | the enclosure does not enclose the nucleolus |
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is
1. Absence of mitochondria
2. Presence of cell wall
3. Presence of haemoglobin
4. Absence of nucleus