Lecture 6.Feb1 - BIO 311C Spring 2010 Lecture 6 Monday 1...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 311C Spring 2010 Lecture 6 – Monday 1 Feb. 2010 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Functions of Lysosomes Intracellular digestion Destruction of bacteria, other pathogens and toxins Recycling of worn-out organelles and occlusions Tissue development in complex multicellular organisms Autolysis (breakdown of cellular components) after the cell dies * 3 Review
Background image of page 2
a. expanding the plasma membrane, allowing the cell to become larger, b. exporting substances from the cell without releasing any contents of the cytoplasmic matrix. Transport vesicles from the golgi that fuse with the plasma membrane are capable of: * 4
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Functions of the Plasma Membrane It keeps the cytoplasmic contents of the cell separated physically and chemically from the environment. It regulates the movement of substances into and out of the cell. It provides specific surface receptors for communication with other cells, viruses and chemical substances in the surrounding environment. It provides attachment sites for intracellular and extracellular component of the cell. * Model of the plasma membrane of an animal cell. Textbook Fig. 7.7, p. 128 Inside of cell Outside of cell plasma membrane 5
Background image of page 4
Relationship Among Various Organelles of the Endomembrane System of Eukaryotic Cells Substances leave the lumen spaces of the endomembrane system into the cytoplasmic matrix one molecule at a time through lysosomes. Substances are transported into the extracellular space in bulk through the plasma membrane. * nuclear envelope rough e.r. smooth e.r. golgi plasma membrane food vacuole lysosome residual bodies bulk transport out of the cell molecules for food/energy cell vesicle 7
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Membrane-bounded Organelles that are not a part of the Endomembrane System peroxysomes mitochondrion chloroplast These organelles divide by fission rather like prokaryotic cell division. Their membranes are constructed of molecules that are assembled from the cytoplasmic matrix or that are synthesized within the organelle. The contents of their luminal spaces are not mixed with luminal contents of endomembrane organelles. Also see textbook Figs. 6.17, 6.18. 6,19
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/11/2010 for the course BIO 48765 taught by Professor Sathasvian during the Spring '10 term at University of Texas at Austin.

Page1 / 21

Lecture 6.Feb1 - BIO 311C Spring 2010 Lecture 6 Monday 1...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online