The mitotic spindle is made of:

a. collagen.
b. condensin.
c. histones.
d. keratin.
e. microtubule


E

Biology & Microbiology

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Consider this pathway: epinephrine ? G protein-coupled receptor ? G protein ? adenylyl cyclase ? cAMP. The second messenger in this pathway is _____

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DNA may be damaged from the by-products of normal cellular aerobic respiration. Name three of these electrophilic oxidants that are generally classified as reactive oxidants

What will be an ideal response?

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Where does epigenetic regulation take place in a eukaryotic cell?

a. outside of the cell b. cytoplasm c. ribosome d. nucleus

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Four of the five scientists listed below are related by

a common observation. Select the exception. a. Hooke b. Galileo c. Schwann d. Schleiden e. Virchow

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