eukaryotic cells Flashcards
The structure of the NUCLEUS
-Largest organelle
-Nuclear envelope with double membrane with nuclear pores to allow the movement of mRNA
-Nucleoplasm (jelly) full of chromatin
-Nucleolus is the smaller inner sphere which makes ribosomes and mRNA
Function of the nucleus
-Site of DNA replication and transcription (making mRNA)
-Contains genetic code for each cell
The structure of RER
-Folded membranes called Cisternae
-Ribosomes
The function of RER
-Protein synthesis
The structure of SER
-Folded membranes called Cisternae
The function of SER
-Production, processing & storage of lipids and carbohydrates
The structure of Golgi apparatus
-Series of fluid-filled flattened and curved sacs
Function of Golgi apparatus
-Add carbohydrate to proteins to form glycoprotein
-Produce secretory enzymes
-Transport and modify lipids
-Finished products are transported to cell surface in Golgi vescicles where they fuse with the membrane
-Forms lysosomes
Structure of Lysosomes
-Bags of digestive enzymes
Function of Lysosomes
-Breakdown and digest worn out/dead cell
Structure of Mitochondria
-Bound by a double membrane called the envelope
- The inner membrane is folded to form projections called Cristae with a matrix
Function of Mitochondria
-Site of ATP production, aerobic respiration
Structure of Ribosomes
- 80s large Ribosomes
Function of Ribosomes
-Protein synthesis
Structure of Vacoule
- Filled with fluid surrounded by a single membrane called the Tanoplast
