What are the main characteristics of the following: Archaea, Bacteria, Eukarya and Viruses?
Archaea:
- Prokaryotic cells without a nucleus
- Single-celled organisms
- Can live in extreme environments such as hot springs, salt flats, and deep-sea vents
- Have unique cell walls and membranes that differ from bacteria
Bacteria:
- Prokaryotic cells without a nucleus
- Single-celled organisms
- Can be found in almost every environment on Earth
- Have a variety of shapes and sizes
- Can be beneficial or harmful to humans
Eukarya:
- Eukaryotic cells with a nucleus
- Can be single-celled or multicellular organisms
- Includes animals, plants, fungi, and protists
- Have membrane-bound organelles such as mitochondria and chloroplasts
- Can reproduce sexually or asexually
Viruses:
- Non-living particles that require a host cell to replicate
- Consist of genetic material (DNA or RNA) surrounded by a protein coat
- Can infect all types of organisms, including bacteria, plants, and animals
- Can cause diseases such as the flu, HIV, and COVID-19.