BISC 1111 Lecture Notes - Lecture 4: Phospholipid, Polysaccharide, Amyloplast

• School: GWU
• Department: Biological Sciences
• Course: BISC 1111
• Professor: Doebel Hartmut

Document Summary

Plasma membrane: allows passage of oxygen, nutrients, wastes. Central vacuole: storage, breakdown of water, hydrolysis, plant growth. Cell wall: maintains shape and protects from mechanical damage. Golgi apparatus: synthesis, modification and secretion of cell products. Lined by nuclear lamina: maintains shape of nucleus. Chromatin: complex of dna and protein that make up chromosomes. Nucleolus: rna is synthesized from info in dna. Proteins from cytoplasm are assembled with rrna =ribosomes. Free ribosomes are suspended in the cytosol (enzymes) Bound ribosomes attached to er or nuclear envelope. Nuclear envelope, endoplasmic reticulum, golgi apparatus, lysosomes, plasma membrane. Protein synthesis, transport of proteins, metabolism, lipid movement, detoxification. Membranes related through physical continuity, transfer of membrane segments as tiny vesicles. Separates er lumen (internal compartment) from cytosol. Adds membrane proteins and phospholipids to own membrane. Makes membrane phospholipids (enzymes built into er membrane assemble phospholipids) Golgi apparatus: flattened membranous sacs- cisternae vesicles in ga are engaged in transfer of material.