BIOL 1010 Lecture Notes - Lecture 2: Globular Protein, Mitochondrial Matrix, Intermembrane Space

• School: Dalhousie University
• Department: Biology
• Course: BIOL 1010
• Professor: M.Mc Carville

Document Summary

Mitochondria are the sites of cellular respiration the metabolic processes that uses oxygen to drive the generation of atp by extracting energy from sugars, fats and other fuels. Endosymbiont theory- states that an early ancestor of eukaryotic cells engulfed an oxygen-using non photosynthetic prokaryotic cell. Eventually engulfed cell formed a relationship with the host cell in which it was enclosed. The outer membrane is smooth but the inner membrane is convoluted with inner folding"s called cristae (increases the surface area for atp synthesis) The mitochondrial matrix is enclosed by the inner membrane. Intermembrane space- between the inner and outer membranes. Network of fibres extending throughout the cytoplasm. Organizes structures and activities in the cell. Composed of 3 types of molecular structures: microtubules- thickest, microfilaments-thinnest, intermediate filaments- medium size. Hollow tube is constructed from a globular protein called tubulin. Each tubulin protein is a dimer a molecule made of 2 subunits: a tubulin, b tubulin.