BI236 Lecture Notes - Lecture 3: Starch, Glycogen, Cytoplasm
Document Summary
Lecture 3 cell organelles jan 9th/17. In plants, bacteria, fungi, algae, and some archaea. Interconnected filaments and fibres: fluid (cystol, storage substances (calcium oxalate, silicon dioxide (plants), energy storage materials (starch, glycogen, lipid droplets) The 2 regions of the er differ in both structure and function. Smooth er production and metabolisms of fats and steroid hormones. Rough er (has ribosomes) - protein production/protein folding. Packages proteins inside cell before they leave the cell. Digest excess or worn out organelles, food particles, and engulf viruses and bacteria. Membrane around lysosomes allows the digestive enzymes to work at the 5ph they require. Frequently nicknamed (cid:862)suicide bags(cid:863) or (cid:862)suicide sacs(cid:863) by cell biologists due to their autolysis. No basic shape and size structure varies according to the needs of the cell. Mature plant cells have 1 large central vacuoles. Animal vacuole are smaller but there are many.
