Chapter 13: Biochemical Signalling
Q32P
Page 441
The diagnosis of some lymphomas (blood cell cancers) includes cytogenetic analysis, which involves examining a patient’s cells for chromosomal
abnormalities. Chromosomes are visible by light microscopy only during cell division. Cells removed from a patient’s bone marrow may be treated with phorbol myristate acetate (PMA) prior to microscopic examination. What is the purpose of the PMA?
Q3P
Page 440
What biochemical changes are required to convert tyrosine to (a) norepinephrine and (b) epinephrine?
Q4P
Page 440
The anabolic steroid methandrostenolone is shown here.
(a) How does it differ structurally from testosterone?
(b) Why might such drugs be administered to burn victims?
Q5CP
Page 408
Why are some hormone receptors intracellular proteins?
