KINE 2011 Lecture Notes - Lecture 7: Cellular Respiration, Exocytosis, Nuclear Membrane

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 2011
• Professor: Ali Abdul Sater

Document Summary

Small molecules pass unassisted: nuclear localization signal: distinguishes proteins to be imported into nucleus by short amino acid sequence, nucleoplasm: liquid & semi-liquid substance in nucleus. Filled w/chromatin: chromatin: collection of dna w/proteins, eukaryotic nucleus contains nucleoli- small fibers & granules. Eukaryotic ribosomes: riboso(cid:373)es are respo(cid:374)sible for protei(cid:374) sy(cid:374)thesis. It"s (cid:373)ade of rna & protei(cid:374)s: each consists of 2 components: small & large units, contain 4 rna molecules & 80+ proteins, ribosomes are either suspended in cytosol or bonded to membrane. Endomembrane system: em system divides cytoplasm into function & structural components (organelles), organelles perform special functions: synthesis/modif. of proteins, transport of proteins, synthesis of lipids, detoxification, vesicles: membrane bond compartments that transfer substances b/t parts of system. Interconnect network of membrane enclosed sacs called cisternae: membrane surrounds an enclosed space called lumen, amount of smooth/rough er depends in cells needs.