Classify each of the following examples of organisms into one of the three domains based on the details provided: Bacteria, Archaea, or Eukarya.
1. Ceratium
- Description: A photosynthetic zooxanthellae found in coral reefs. Its membrane-bound chloroplasts produce energy.
- Domain: Eukarya
2. Halogeometricum
- Description: A halophile, or salt-loving organism, that lives in extremely salty environments. Its membrane is composed of ether-linked lipids bonded to glycerol.
- Domain: Archaea
3. Leptothrix discophora
- Description: A unicellular organism that oxidizes iron and manganese in aquatic ecosystems. Its circular genome resides in a nucleoid area.
- Domain: Bacteria
4. Methanoregula formicica
- Description: A methane-producing unicellular organism capable of living in extremely acidic environments where little else can survive.
- Domain: Archaea
5. Cryptosporidium
- Description: A unicellular protist that causes severe illness in humans. It is transmitted through contaminated water sources.
- Domain: Eukarya