Week 1: The Endomembrane System

University:
The Pennsylvania State University
Course:
BIOL 230W | Cellular Biology
Academic year:

2023
Views:

437

Pages:

1
Author:

Sarah Landeck

BIOL 230W - Week 1 The Endomembrane System — There are 2 strands on the hydrophobic tail of a phospholipid. One of the strands contains a double bond which causes it to kink, the other does not —> the phosphate head is charged and the tail is not charged — Hypotonic solution has a high concentration of water/ low concentration of solute, hypertonic solution has a low concentration of water/high of solute —> Moves from a hypotonic to hypertonic solution The Endomembrane System pt 2 — Free ribosomes in the cytoplasm translate RNA into proteins, ribosomes attached to ER translate info from mRNA to protein, transported to Golgi — The rst cell to have a nucleus is called the FECA — 3 classi cations of organelles = Membrane-bound/endomembrane system (nucleus, ER, Golgi, lysosomes, plasma membrane), Proteinaceous (ribosome, proteasome), and Endosymbiotic (mitochondria, chloroplast) —> Endosymbiotic organelles were brought in from another organism (working) fi fi fi — Endocytosis: the process of a cell engul ng something into itself