Orderly and clear summary of chapter 20 what is discussed during the cell biology lectures. It is a summary from the book "Essential Cell Biology " With this summary you will save a lot of time. I passed this course with a 7,5. Good luck :)
COMPLETE TEST BANK: ESSENTIAL CELL BIOLOGY 5TH EDITION ALBERTS [ CONTAIN ANSWER KEY Questions with 100% correct Answer.
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Vrije Universiteit Amsterdam (VU)
Biomedical Sciences
Histology & cell biology
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By: jfranzosi • 4 year ago
The notes are good, but some of them have been switched (Chp 11 notes are actually Chp 20 notes and and vice versa). You're better off getting the bundle.
By: biomedicalsciencesvu • 3 year ago
Thanks :) I changed it
By: mateenkhokhar • 4 year ago
By: semlunahazes • 4 year ago
By: emrearditi • 3 year ago
By: ariofatehi • 4 year ago
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Chapter 20 – Cell communities; tissues, stem cells and cancer
Connective tissue composed of;
Cells with their internal framework of cytoskeletal filaments
Extracellular matrix extracellular protein fibers, cells secrete this around
themselves. It gives strength to supportive tissues (bone/cartilage)
o Collagen; pulling forces; provides tensile strength to resist stretching.
(biedt treksterkte om uitrekken te weerstaan)
Type I; in tendons and in bone
Type II; thin fibers in cartilage
Type III; thin fibers in reticular connective tissue
Type IV; basal lamina; for adhesion (aantrekking of epithelium)
o Proteoglycans; pressure forces; resisting compression (bestand tegen
samendrukking) so, protect against pressure.
o Basal lamina; adhesion
Ground substance; glycoproteins
Extracellular matrix and connective tissue
Animal cells; tissues capable of rapid movement, change shape quickly
Plant cells; rigid (stijf), when cells are isolated from the supporting matrix (=cell wall)
they are weak and fragile.
Plant cells
Each cell surrounds itself with extracellular matrix in the form of a cell wall.
Cell wall is made of long fibers from polysaccharide cellulose and other
polysaccharides
Cellulose is synthesized on the outer surface of the cell by cellulose synthase
complex. These complexes transport sugar monomers across the membrane to
incorporate them in the growing polymer.
Cellulose microfibrils are interwoven with other polysaccharides and some structural
proteins complex structure.
Newly formed plant cells make primary cell walls. Once a cell growth stops the
secondary cell wall is produced.
Turgor pressure; develops as the result of an osmotic imbalance between the interior
of the plant cell and the surrounding.
By controlling the way cellulose lay down in the wall, the plant can control its own
shape and direction of growth of the tissue.
Animal cells
In connective tissue, there is a lot of extracellular matrix.
Connective tissue in animals is enormously varied. Flexible/hard/soft etc.
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