How can the same first messenger evoke different responses in different target cells?

a) it depends on the tissue cAMP binds to
b) it depends on the specific proteins phosphorylated by PKA
c) none of the choices is correct
d) it depends on the ligand cAMP binds to


Ans: b) it depends on the specific proteins phosphorylated by PKA

Biology & Microbiology

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The gene encoding coat color is X-linked, and male cats have a single copy of the X chromosome. They can therefore express either the O or o allele, resulting in orange or black coat, respectively

Female cats, on the other hand, have two copies of the X chromosome. Thus, they can be heterozygous and express either orange or black. Using this information, list the possible genotypes for these individuals: • orange male • orange female • black male • black female • tortoiseshell

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Which of the following is not one of the four types of taste?

Select one: a. salty b. hot c. sour d. sweet e. bitter

Biology & Microbiology