The Transcription Complex
What will be an ideal response?
-Sigma factor (?): protein that helps RNA polymerase recognize and bind to promoter.
-RNA polymerase
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What will happen to a child that is fed formula instead of breast milk?
A. The child will not receive any antibodies from the mother. B. The child can never develop certain antibodies. C. The child will receive less antibodies from the mother. D. The child will never have passive immunity.
The "QRS" complex visible in a normal electrocardiogram is associated with the
A. excitation from the AV node and depolarization of the ventricles. B. excitation from the AV node and repolarization of the atria. C. excitation from the SA node and repolarization of the ventricles. D. excitation from the SA node and depolarization of the atria. E. activity in the vagus nerve and release of acetylcholine.
Each of the following is true for the mechanism of the Na+/K+ ATPase pump except
A) the E2 conformation is open to the outside of the cell and has high affinity for K+. B) the E1 conformation is open to the inside of the cell and has high affinity for Na+. C) Na+ triggered phosphorylation of the pump stabilizes the E2 conformation. D) K+ triggered dephosphorylation of the pump stabilizes the E2 conformation. E) Each E1-E2 cycle pumps 3 Na+ ions out and 2 K+ ions in.
How many domains contain prokaryotic organisms?
A) One B) Two C) Three D) Four