📌 Animal and plant cells are eukaryotic, with DNA organised into chromosomes inside a nucleus, whereas bacteria are prokaryotic and lack a nucleus.
Eukaryotes keep DNA in a nucleus; prokaryotes have a DNA loop without one.
★ Must-know
The cell membrane controls the movement of substances into and out of a cell.
The nucleus contains DNA, mitochondria release energy through respiration, and ribosomes are the site of protein synthesis.
Plant cell structures have these functions:
Further detail
1. Which structure is the site of protein synthesis in a cell?
2. Which comparison correctly distinguishes how light and electron microscopes work and the samples they can examine?
3. A scientist observes a small, single-celled organism with one loop of DNA and several small DNA rings. What are the small rings called?
What type of cells are animal and plant cells?
Eukaryotic cells.
Where is DNA organized into chromosomes in animal and plant cells?
Inside a nucleus.
What type of cells are bacteria, and what structure do they lack?
They are prokaryotic cells and lack a nucleus.
How many cells make up a bacterium?
One cell.
How do bacteria compare in size with eukaryotic cells?
Bacteria are smaller.
What forms of DNA do bacteria contain?
A single loop of DNA and small rings called plasmids.
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