| 1. | a nucleoprotein |
| 2. | a low molecular weight RNA devoid of proteins |
| 3. | a cell |
| 4. | a cluster of cells |
Identify the correctly matched pairs:
| I: | Anton Von Leeuwenhoek |
first saw and described a live cell |
| II: | Robert Brown | discovered the nucleus |
| III: | Matthias Schleiden | was a German zoologist |
| IV: | Theodor Schwann | was a British botanist |
1. Only I and II
2. Only I and III
3. I, II, III and IV
4. Only III and IV