biochem doubt!!!!

1. methyl xanthines such as caffine n theophyliine enhance lipolysis in adipose tissue by
a] inducing adenylate cyclase synthesis
b]inducing triglyceride lipase synthesis
c]inhibiting cyclic amp phosphodiestrase activity
d]directly activating intracellular protien kinase
e]enhancing binding of epinephrine to an extra cellular membrane receptor

 

c inhibiting cAMP phosphodiesterase activity

Methylxanthines (caffeine, theophiline, theobromine) are active principles with lipolytic activity. These
principles enhance lipolysis by rising AMPc intracellular levels; this is because methylxanthines inhibit
phosphodiesterase enzyme

 

answer

 

c]inhibiting cyclic amp phosphodiestrase activity

 

Are you sure it is not because of increasing the activity of adenylate cyclase ?

 

Answer is C- Inhibiting Camp phospdiesterase activity

 

hello...I was wondering if anyone would mind explaining collagen synthesis with regards to the amount of detail we need to know for the exam . . .

Thank you for your help

 

study lippencort

 

can any one answer this question?

. Assuming that P50 = 26 torrs, under conditions where pO2 = 30 torrs, the average number of O2 molecules bound per hemoglobin molecule is closest to

A. 0.5.
B. less than 1.
C. almost 2.
D. greater than 2.
E. greater than 3.