Binding of a protein hormone may lead to formation of a(n) __________, which relays a signal into the cell.
Fill in the blank(s) with the appropriate word(s).
second messenger
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In the conversion of electrical energy to light
energy in a light bulb, how much is lost as heat energy?
a. 5 percent b. 15 percent c. 55 percent d. 75 percent e. 95 percent
Integral proteins that span the entire bilayer are called _____.
A. receptor proteins B. integral proteins C. adhesion proteins D. transmembrane proteins E. monotopic proteins
The bacterial chromosome is
A) usually found in the cytoplasm. B) found in a nucleoid. C) found in a nucleus. D) both circular and found in a nucleoid. E) both circular and found in a nucleus.
Crenarchaeota may carry out EACH of the following metabolic processes EXCEPT
a. aerobic respiration with H2 as an electron donor and oxygen as an electron acceptor. b. anaerobic respiration with H2 as an electron donor and elemental sulfur (S0) as an electron acceptor. c. photosynthesis. d. fermentation of peptides.