Question

What are the 3 domains and examples?

Answer 1

The 3 domains are:

Archaea:

1. Archaea are single-celled microorganisms with a structure similar to bacteria.
2. In terms of evolution, they vary from bacteria and eukaryotes, and they make up the third domain of life.
3. Archaea are anaerobes that exist in low-oxygen environments (e.g., water, soil).
4. Eg. Aeropyrum pernix, Thermosphaera aggregans, Ignisphaera aggregans.

Bacteria:

1. Bacteria are single-celled tiny organisms.
2. Bacteria are present practically everywhere in the world and play an important role in the planet's ecosystems.
3. Some animals have the ability to survive extreme temperatures and pressures.
4. Two examples are Lactobacillus acidophilus and Escherichia coli.

Eukarya:

1. Plants, Animalia, Fungi, and a few Protista are the kingdoms of Eukarya, which include all cell-based creatures with nuclei or membrane-bound organelles.
2. Every other lifeform having membrane-bound organelles, such as mitochondria and chloroplasts, is classified as eukarya.