Protein and rRNA Free floating or attached to rough ER Mitochondria Powerhouse

Protein and rrna free floating or attached to rough

This preview shows page 4 - 7 out of 8 pages.

Protein and rRNA Free floating or attached to rough ER - Mitochondria Powerhouse of the cell Produces ATP Double membrane Contains separate - DNA - Ribosomes - The Endomembrane System Secrete things out of the cell or in Nuclear envelope Endoplasmic reticulum - Rough ER Ribosomes release proteins into the lumen Folding, processing, and packaging of proteins for export - Smooth ER Enzymes for lipid synthesis and/or degradation 4
Image of page 4
Friday, May 29, 2020 Golgi apparatus - Protein receiving, packaging, and shipping organelle - Cis-side receives vesicles from the rough ER - Contents move through the cisternae to the trans-side Vesicles - Lysosomes Animal cells “recycling center” Hydrolyze macromolecules - Acidic pH (about 5) - Contain many hydrolytic enzymes - Peroxisomes Originate as vesicles from ER Break apart toxins and their byproducts 5
Image of page 5
Friday, May 29, 2020 - How do proteins go to the right place? The signal hypothesis The Cytoskeleton - Provides Shape Support Movement - Works as both a “skeleton” and “muscles” - 3 main fiber types: Microfilaments Intermediate filaments Microtubules - Microfilaments Actin subunits Cell crawling - Slight pushing and moving of cell In animals: - Muscle contraction - Cytokinesis Cell division
Image of page 6
Image of page 7

You've reached the end of your free preview.

Want to read all 8 pages?

  • Fall '13

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture