Section 1.2 Eukaryotes and Prokaryotes Flashcards
What is the length of a bacterial cell?
1 μm (micrometre)
What are the features of a bacterial cell?
Cell wall, cell membrane, cytoplasm, genetic material, plasmids
Some bacterial cells have slime capsules, and flagella
Where are the genes of a bacterial cell found?
long strands of DNA floating in the cytoplasm and as plasmids (no nucleus)
Are all bacteria harmful? Give examples.
No, most bacteria are harmless and are actually useful.
For example, yogurt and cheese contain bacteria
scientist even use some in medicines
they are found in the stomach and help it
stay healthy
What are eukaryotes?
Eukaryotes are often multicellular organisms, including fish, people, and plants. They are larger and more complex than prokaryotes. They usually contain a nucleus and different organelles surrounded by cell membrane, some have cells walls like plants.
What are prokaryotes?
Prokaryotes are often single cells, such as bacteria. They are smaller and simpler than eukaryotes. They do not have a nucleus or any other membrane-bound organelle. They have a cell wall, but it is not made of cellulose.
