The mitotic spindle is made of:
a. collagen.
b. condensin.
c. histones.
d. keratin.
e. microtubule
E
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Consider this pathway: epinephrine ? G protein-coupled receptor ? G protein ? adenylyl cyclase ? cAMP. The second messenger in this pathway is _____
A) cAMP B) G protein C) GTP D) adenylyl cyclase E) G protein-coupled receptor
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?
Where does epigenetic regulation take place in a eukaryotic cell?
a. outside of the cell b. cytoplasm c. ribosome d. nucleus
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