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A great overview of the overall structures of cell biology including Prokaryotes and Eukaryotes
Prokaryote Structure
Prokaryote Structure
Prokaryotic cells will typically contain the following cellular components:
- Cytoplasm – internal fluid component of the cell
- Nucleoid – region of the cytoplasm where the DNA is located (DNA strand is circular and called a genophore)
- Plasmids – autonomous circular DNA molecules that may be transferred between bacteria (horizontal gene transfer)
- Ribosomes – complexes of RNA and protein that are responsible for polypeptide synthesis (prokaryote ribosome = 70S)
- Cell membrane – Semi-permeable and selective barrier surrounding the cell
- Cell wall – rigid outer covering made of peptidoglycan; maintains shape and prevents bursting (lysis)
- Slime capsule – a thick polysaccharide layer used for protection against dessication (drying out) and phagocytosis
- Flagella – Long, slender projections containing a motor protein that enables movement (singular: flagellum)
- Pili – Hair-like extensions that enable adherence to surfaces (attachment pili) or mediate bacterial conjugation (sex pili)
Eukaryote Structure
Eukaryote Structure
Draw the ultrastructure of eukaryotic cells
Draw the ultrastructure of eukaryotic cells
Based on electron micrographs.
The table below contains an electron micrograph of each of the commonly occurring organelles, with a drawing of the structure. Brief notes on recognition features and the function of each organelle are included.
Compare Prokaryotes and Eukaryotes
Compare Prokaryotes and Eukaryotes
Ultrastructure Quizlet
Ultrastructure Quizlet
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