Option 3 : Virus
The correct answer is a Virus.
- Ebola is caused by viruses and transmitted to people from wild animals.
- It spreads through human-to-human transmission.
- It was first discovered in 1976 near the ebola river in Africa.
- Symptoms include fever, fatigue, muscle pain, vomiting etc.
| Organism |
Features |
| Bacteria |
- single-celled microorganisms with the absence of the nucleus.
- very versatile organisms, surviving in extremely inhospitable conditions.
- bacteria is their protective cell wall, which is made up of a special protein called peptidoglycan. This particular protein isn’t found anywhere else in nature except in the cell walls of bacteria.
|
| Fungus |
- eukaryotic, non-vascular, non-motile and heterotrophic organisms.
- may be unicellular or filamentous.
- reproduce by means of spores.
|
| Virus |
- non-cellular, microscopic infectious agents that can only replicate inside a host cell
- do not grow, neither respire nor metabolize, but they reproduce.
- surrounded by a protein coat – capsid and have a nucleic acid core comprising DNA or RNA.
|
| Protozoan |
- unicellular, eukaryotic, heterotrophic organisms.
- either free-living or parasites.
- cause various diseases in animals and humans, e.g. Plasmodium (malarial parasite), Trypanosoma (sleeping sickness), Trichomonas (trichomoniasis), etc.
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