Bio Lecture 4 Cytoskeleton

Bio Lecture 4 Cytoskeleton - Lecture 4 Cytoskeleton...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lecture 4: Cytoskeleton, mitochondria, chloroplasts Friday 10-2-09 Bio 93, Fall 2009 Reading: Ch 6, Pgs. 109-118 Cytoskeleton in eukaryotic cells • A network of fibers, extending throughout cytoplasm – Structural support -mechanical support –-anchors internal cellular components – Motility • Movement of cell from place to place • Movement within the cell • Structural elements of the cytoskeleton – Microfilaments (MF), microtubules (MT), intermediate filaments (IF) • Cytoskeletal elements – Composed of subunits (polymers composed by monomers) polymer: a long molecule composed of identical subunits (or monomers) linked together – Polarized (MicroTubules and MicroFilaments) – + end, and – end – Dynamic structures . rapid assembly and disassemly (MF and MT)-The actin network is involved in pseudopodia EM of cellular cytoskeleton after detergent extrac • Microfilaments (actin): – Location-Cortex, cytoplasmic mesh – Structure-solid rods of 7nm diameter-twisted double chain of actin subunits – Assembly-disassembly-subunits added at one end +-Subunit subtracted at other end - –...
View Full Document

This note was uploaded on 11/19/2010 for the course BIOLOGY 93 taught by Professor O during the Spring '08 term at San Diego.

Page1 / 17

Bio Lecture 4 Cytoskeleton - Lecture 4 Cytoskeleton...

This preview shows document pages 1 - 6. Sign up to view the full document.

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