To what does cAMP bind once it is made by adenylyl cyclase in response to glucagon and/or epinephrine?
a) it binds to adenylyl cylase
b) It binds to the allosteric site on the regulatory subunits of protein kinase A.
c) It binds to the allosteric site on the catalytic subunits of protein kinase A.
d) It binds to phosphorylase kinase.
Ans: b) It binds to the allosteric site on the regulatory subunits of protein kinase A.
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You are a doctor who examines a swollen and warm puncture wound on the hand of a patient. Next door, a vet examines the same puncture wound on the foot of a dog. Are you and the vet seeing the same immune responses?
A. Yes, because dogs have innate immune systems but not adaptive immune systems. B. Yes, because dogs have adaptive immune systems but not innate immune systems. C. No, because the immune response is unique to humans. D. Yes, because vertebrates have both adaptive immune systems and innate immune systems. E. No, because the foot of a dog is a completely different structure than the hand of a patient.
Cloned genes may be mutated outside of a cell by a process called in vitro site-directed mutagenesis
Indicate whether the statement is true or false
Answer the following statements true (T) or false (F)
1. The Na+/K+-ATPase pump is a ligand-gated ion channel. 2. Ion gradients across the membrane drive numerous cellular functions. 3. The ability of bread to rise is mainly a function of the CO2 produced anaerobically during oxidative phosphorylation. 4. The aerobic breakdown of glucose yields 34 to 38 ATP, while the anaerobic breakdown of glucose yields 20 ATP.
A hydrogen bond _________.
Fill in the blank(s) with the appropriate word(s).