Arrestin binding to GPCRs __________.
a) causes the binding of additional G proteins
b) stabilizes G proteins
c) causes denaturation of G proteins
d) stabilized GPCRs
e) prevents further activation of additional G proteins
Ans: c) causes denaturation of G proteins
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One of the important roles of ethylene in plant development is that it induces radial swelling in:
A. root and stem seedling development B. embryo expansion C. seed germination D. stem elongations E. auxin production
thr refers to a gene that governs a cells ability to synthesize threonine from inorganic precursors. The
designation thr+ indicates:
a. that the allele is normal. b. that the allele is the mutant allele. c. that the bacterium is biologically active. d. that the bacterium is biologically inactive. e. that the bacterium cannot make its own threonine.
The full transfer of an entire DNA molecule to an F- cell would take about ____ minutes
a. 10?20 b. 20?30 c. 300?400 d. 4?7 e. 90?100
________ proteins stabilize the arrangement of the chlorophyll within a photosystem and modify the absorption spectra of specific chlorophyll molecules
Fill in the blank with correct word.