botchy
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1. Which of the following becomes covalently attached to tRNA during protein synthesis?
a. Amino acid
b. elF3
c. mRNA
d. 30S ribosomal subunit
e. 50S ribosomal subunit
2. The irreversibility of the pyruvate kinase reaction renders hepatic gluconeogenesis dependent on which of the following two ATP or GTP requiring enzymes>
a. Acetyl coA carboxykinase and glyceraldehyde 3-phosphate dehydrogenase
b. Aldolase A and glycerate kinase
c. Pyruvate carboxylase and fructose 1,6, bisphosphate kinase
d. Pyruvate carboxylase and phosphoenolpyruvate carboxykinase
e. Pyruvate carboxylase and phosphofructokinase-1
3. Cyclic AMP-dependent protein kinases are activated by which of the following mechanisms?
a. Association of the catalytic subunits to form active dimers on binding to cyclic AMP
b. Association of the catalytic subunits with the regulatory subunits that are bound to cyclic AMP
c. Binding of cyclic AMP to the regulatory subunits, which releases the catalytic subunits
d. Binding of cyclic AMP to both the regulatory and catalytic subunits
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| botchy
Forum Newbie
Topics: 1
Posts: 8
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any sources to answers to nbme form 4????? need it as soon as possible
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