BIO130H1 Study Guide - Final Guide: Keratin, Peroxisome, Hepatocyte
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BIO130H1 Full Course Notes
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Table: percentage volumes occupied by organelles in a standard cell (note that volumes will be different in different cells) Cytosol occupies half the cell volume: it is used in protein synthesis and degradation, it is also used in intermediary metabolism (degradation and synthesis of small molecules) Organelle a subcellular compartment or large macromolecular complex, often membrane-enclosed, that has a distinct structure, composition and function: examples of membrane enclosed organelles: nucleus, endoplasmic reticulum, Golgi apparatus: examples of organelles that are not membrane-bound: nucleolus, centrosomes, note: ribosomes are too small to be classified as organelles. Image: a cell with labelled organelles (in black) and their functions (in red). Rer rough endoplasmic reticulum, ser smooth endoplasmic reticulum. A rough endoplasmic reticulum has ribosomes attached, while the smooth endoplasmic reticulum does not. The rough er is involved in organellar protein (proteins that go to the organelles) and secreted protein (proteins that go outside the cell) synthesis.
