Cell Biology

Quiz 5 Key 1. Ubiquitination and phosphorylation are both examples of common post-translational modiﬁcations. Which of the following is not a commonality between both pathways? A. They are both reversible modiﬁcations B. They both use ATP C. Ubiquitin chains and phosphorylation chains both lead to protein degradation D. Ubiquitination and phosphory

BIOSCI | D103 | Cell Biology | assessment | Quiz 5 Key 1. Ubiquitination a

Page 1 Midterm exam 2 A 1. The current model for the nucleation of microtubules is that a helical array of gamma-tubulin subunits forms an open, lock- washer-like ring-shaped template (depicted on the right) upon which the ﬁrst row of alpha-beta- tubulin dimers assembles. How does this model account for the polarity of microtubules? A. Only the alpha-tubu

BIOSCI | D103 | Cell Biology | question bank | Page 1 Midterm exam 2 A 1. The

Version IB 1. What is the direct source of energy that powers molecular motors? a. hydrolysis of GTP b. hydrolysis of ATP c. proton gradient d. H+ gradient e. condensation of ATP 2. Kinesin movement along a microtubule is said to be meaning that it can move long distances along an individual microtubule without falling off. a. excessive b. processive c. depre

BIOSCI | D103 | Cell Biology | question bank | Version IB 1. What is the dire

Quiz 2 Key 1. In a mammalian cell, which condition is not present at the completion of S-phase? A. Each replicated chromosome has four telomeres. B. There is double the amount of DNA-bound histone content compared to a G1 cell. C. Sister chromatids separate from each other. D. The DNA content is tetraploid. E. In replicated DNA, new bases are paired with paren

BIOSCI | D103 | Cell Biology | assessment | Quiz 2 Key 1. In a mammalian c

Page 2 E. ATP, ADP Page 3 6. Ran is an important GTPase involved in cytoplasmic-nuclear shuttling. Ran is involved in all of the following events except: A. complexing with importin alpha and beta to move through the nuclear pore B. disrupting the importin alpha and beta complex after nuclear entry C. transporting importin beta from the nucleus to the cytopl

All courses in BIOSCI

Popular Documents