Quiz3_07Ans - BioBM432 Survey of Cell Biology Quiz#3 Your...

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BioBM432 Survey of Cell Biology - Quiz #3 - February 28, 2007 Your name printed ______________________ Your signature ____________________ 1. Mitotic spindle organization: indicate whether the following items are associated with (a) chromosomes or (b) MTOCs. Microtubule plus ends __ a __ Microtubule minus ends__ b __ Kinetochores__ a __ Astral microtubules__ b __ 2. An intermediate filament protein that resides in the nucleus of mammalian cells is ___ _lamin _____ [name of protein]. 3. In epithelial cells lining the gut, the structure that forms a barrier to diffusion of molecules through the sheet of cells is called a ___ tight junction _____. 4. A major protein in connective tissue, __ collagen ___ forms a network of fibers that is strengthened when its prolines / glycines [circle ONE] are hydroxylated. 5. The carbohydrate moieties attached to the polypeptide in proteoglycans are generally known as ___ glycosoaminoglycan (GAG) _____, an example of which is___ hyaluronin, heparin, heparin sulfate, chondroitin sulfate___. [There are multiple correct answers to the second blank.] 6.
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