Summary of "Parts of a cell"
The structure of a cell includes the cellular membrane, DNA, nucleus, eukaryotes, prokaryotes, ribosomes, endoplasmic reticulum, Golgi bodies, vesicles, lysosomes, vacuoles, mitochondria, chloroplasts, cell wall, microfilaments, actin filaments, and centrioles.
Key Points
- eukaryotes have a nucleus, while prokaryotes do not.
- DNA is transcribed into mRNA, which is translated into proteins at the ribosomes.
- Proteins produced by ribosomes attached to the endoplasmic reticulum are pushed into the ER and travel to the Golgi bodies before being released as vesicles.
- vesicles can merge with the cell membrane to release proteins outside the cell or embed them in the membrane.
- mitochondria and chloroplasts were once independent prokaryotic organisms that now live in symbiosis within eukaryotic cells.
- Plant cells have cell walls made of cellulose for rigidity.
- microfilaments and actin filaments give the cell structure and aid in movement.
- centrioles are involved in coordinating microtubules during cell division.
Speaker
Category
Science and Nature
