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Questions and Answers
What are the two domains of life that prokaryotes are a part of?
What are the two domains of life that prokaryotes are a part of?
- Plants and animals
- Fungi and slime moulds
- Bacteria and archaea (correct)
- Protozoa and algae
How much bigger are eukaryotic cells compared to prokaryotic cells?
How much bigger are eukaryotic cells compared to prokaryotic cells?
- About twice as big
- About five times as big
- About ten times as big
- About fifteen times as big (correct)
What is the main distinguishing feature of eukaryotes compared to prokaryotes?
What is the main distinguishing feature of eukaryotes compared to prokaryotes?
- The presence of a nucleus
- The presence of a nucleoid region
- The presence of cell signaling
- The presence of membrane-bound organelles (correct)
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Study Notes
- Prokaryotes are single-celled organisms that lack a nucleus, but a nucleoid region is still present.
- Prokaryotes include bacteria and archaea, two of the three domains of life.
- Prokaryotic cells were the first form of life on Earth, characterized by having vital biological processes including cell signaling.
- Plants, animals, fungi, slime moulds, protozoa, and algae are all eukaryotic.
- Eukaryotic cells are about fifteen times wider than a typical prokaryote and can be as much as a thousand times greater in volume.
- The main distinguishing feature of eukaryotes as compared to prokaryotes is compartmentalization: the presence of membrane-bound organelles (compartments) in which specific activities take place.
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