NSCI 1413 Lecture Notes - Lecture 14: Cyclic Adenosine Monophosphate, Invagination, Adenylyl Cyclase
6 May 2017
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Document Summary
All living things are composed of cells. Cells are the basic unit of all organisms. Eukaryotes: mainly multicellular w/ many cell types. Nucleus: holds genetic material; only in eukaryotes nuclear envelope: selectively. Nucleolus: synthesizes ribosome components; present during interphase; not. Ribosome: site of protein synthesis; found in cytoplasm and er. Endoplasmic reticulum: membrane boud; made of chromatin: rough: site of protein synthesis due to attached ribosomes. Smooth: assists in synthesis of steroid hormones and lipids, connects rough er to golgi, detoxifies. Golgi apparatus: package substances produced in rough er and secrete to other cell parts or to membrane for export. Lysosome: sac of hydrolytic enzymes; principal site of intracellular digestion; not found in plants. Peroxisome: breaks down h 2 o 2 via catalase; detoxifies alcohol in liver cells. Mitochondrium: site of cell respiration; outer double membrane and inner membranes (cristae); contain their own dna. Vacuole: membrane-bound storage site; small vacuole = vesicle; contractile pump out excess water.
