In an experiment examining adrenergic receptors, epinephrine alone was not able to trigger an increase
in cAMP, but when beta receptors were fused with animal cells, there were high levels of cAMP. What
was occurring?
a. activation of epinephrine.
b. protein kinase inhibition.
c. activation of adenylyl cyclase.
d. protein kinase amplification.
e. both activation of adenylyl cyclase and protein kinase amplification.
E
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CFTR is likely made of what type of macromolecule?
a. protein b. nucleotide c. lipid d. carbohydrate
A female fruit fly with the recessive mutant phenotype of white eyes and miniature wings is mated with a male possessing the wild-type phenotype of red eyes and normal wings
Among the F1s, all the females are wild-type while all the males exhibit the mutant phenotype. The F2s resulting from a testcross exhibit predominantly (63%) parental phenotypes. How do you explain these results?
The specific causative agent of a disease is called ______ and the way the disease develops is ____
a. Portal of entry; portal of exit b. Medical infection; pathogenic microbiology c. Invasiveness;progression d. Etiology;pathogenesis
The force that moves water through xylem is provided by:
A) transpiration. B) active transport. C) osmosis. D) gravity.