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
Notable Quotes
— 00:29 — « So let me label that. Cellular membrane. »
— 08:17 — « Endoplasmic reticulum. Maybe a good name for a band. »
— 16:48 — « Just like my liver is a subunit of Sal and it's an organ, an organelle is a subunit of a cell. »
— 18:33 — « Maybe I should do that in especially green, green. So we have chloroplasts. »
— 20:19 — « I go into detail there. Centrioles that are right outside of the nucleus. »
Category
Science and Nature