NBDE Part I Biochem UPDATED ACTUAL
Exam Questions and CORRECT Answers
amino-glycosides do what? - CORRECT ANSWER - bind to 30s ribosomes and inhibit
mRNA translation(protein synthesis)
what are the ketogenic AA - CORRECT ANSWER - leucine and lysine
competitive inhibitor - CORRECT ANSWER - increase Km and Vmax constant
non-competitive inhibitor - CORRECT ANSWER - Km stays the same, decreased Vmax
vitamin C - CORRECT ANSWER - hydroxylation of proline and lysine during collagen
synthesis
which is the mechanism of action for fluorouracil - CORRECT ANSWER - suicide
inhibitor that works through irreversible inhibition of thymidylate synthase
where does N-glycosylation occur in cells - CORRECT ANSWER - RER
kleinfelters syndrome - CORRECT ANSWER - 47, XXY
turners syndrome - CORRECT ANSWER - 45, XO
prothrombin acts with what to form thrombin - CORRECT ANSWER - Ca2+
glycoprotein hormones - CORRECT ANSWER - LH, FSH, TSH, hCG
, which is not a glycoprotein hormone - CORRECT ANSWER - GH-7 (peptide hormone)
what is the substance of thrombin - CORRECT ANSWER - fibrinogen
what is intracellular element of glucagon - CORRECT ANSWER - cAMP
what process makes NADPH - CORRECT ANSWER - pentose phosphate shunt
rate limiting step of cholesterol biosynthesis - CORRECT ANSWER - HMG CoA
reductase
how is glucose and fructose associated with caries - CORRECT ANSWER - dextrans and
levans
what enzyme do oral bacterai use to create dextran - CORRECT ANSWER - dextran
sucrase(glucosyltransferase)
steptococcus breaks down sucrose into what products - CORRECT ANSWER - glucose +
fructose
glucans - CORRECT ANSWER - dextrans + mutans + levans
polymers of glucose - CORRECT ANSWER - dextrans and mutans
polymer of fructose - CORRECT ANSWER - levans
what caries iron in the plasma - CORRECT ANSWER - transferrin
Exam Questions and CORRECT Answers
amino-glycosides do what? - CORRECT ANSWER - bind to 30s ribosomes and inhibit
mRNA translation(protein synthesis)
what are the ketogenic AA - CORRECT ANSWER - leucine and lysine
competitive inhibitor - CORRECT ANSWER - increase Km and Vmax constant
non-competitive inhibitor - CORRECT ANSWER - Km stays the same, decreased Vmax
vitamin C - CORRECT ANSWER - hydroxylation of proline and lysine during collagen
synthesis
which is the mechanism of action for fluorouracil - CORRECT ANSWER - suicide
inhibitor that works through irreversible inhibition of thymidylate synthase
where does N-glycosylation occur in cells - CORRECT ANSWER - RER
kleinfelters syndrome - CORRECT ANSWER - 47, XXY
turners syndrome - CORRECT ANSWER - 45, XO
prothrombin acts with what to form thrombin - CORRECT ANSWER - Ca2+
glycoprotein hormones - CORRECT ANSWER - LH, FSH, TSH, hCG
, which is not a glycoprotein hormone - CORRECT ANSWER - GH-7 (peptide hormone)
what is the substance of thrombin - CORRECT ANSWER - fibrinogen
what is intracellular element of glucagon - CORRECT ANSWER - cAMP
what process makes NADPH - CORRECT ANSWER - pentose phosphate shunt
rate limiting step of cholesterol biosynthesis - CORRECT ANSWER - HMG CoA
reductase
how is glucose and fructose associated with caries - CORRECT ANSWER - dextrans and
levans
what enzyme do oral bacterai use to create dextran - CORRECT ANSWER - dextran
sucrase(glucosyltransferase)
steptococcus breaks down sucrose into what products - CORRECT ANSWER - glucose +
fructose
glucans - CORRECT ANSWER - dextrans + mutans + levans
polymers of glucose - CORRECT ANSWER - dextrans and mutans
polymer of fructose - CORRECT ANSWER - levans
what caries iron in the plasma - CORRECT ANSWER - transferrin
