Mitochondria e dense little dots on he stain

Info iconThis preview shows page 1. Sign up to view the full content.

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

Unformatted text preview: yellow) in a cultured cell given a fluorescent molecule that is sequestered into these organelles. mitochondria e- dense little dots on H&E stain. typically a bit basophilic(?) --- most of their proteins made on FREE polysomes and then imported. Fig. 2-19 3 major components of a cell’s cytoskeleton, which determines the cell’s shape and movements: Microtubules – tubes made of α and β tubulin dimers; 25 nm diameter; assembly and disassembly are very dynamic. MTs serve as tracks for transport of organelles etc. by motors such as kinesin and dynein. Microfilaments – each made of 2 helical strands of actin monomers; 5-7 nm diameter; also very dynamic in structure. Myosin motors interact here. Intermediate filaments – made of different proteins in different cells, such as vimentin and keratins, with structure much more stable than MTs or actin filaments; diameter ranges 8-10 nm. NOT membraneous. Hollow tubes, dimers of alpha and beta TUBULIN. (aka Actin filaments) constantly shortening! very dynami...
View Full Document

Ask a homework question - tutors are online