EXCELLENT ACHIEVERS LIBRARY

NBME Biochemistry 2024 UPDATED EXAM QUESTIONS AND CORRECT ANSWERS || GRADED A+ Isoelectric point (pI) - ANSWER pH at which the number of positive charges equals the number of negative charges, and the overall charge on the AA is zero? 1st pKa= carboxyl group (pKa ~2) 2nd pKa= side chain (if the side chain is ionizable) 3rd pKa= amino group (pKa ~9) - ANSWER Titration curves of amino acids: 1st pKa corresponds to? 2nd pKa corresponds to? 3rd pKa co...

BIOCHEMISTRY NBME EXAM QUESTIONS AND 100% CORRECT SOLUTIONS What is the rate-limiting step of glycolysis? - ANSWER PFK, allosterically activated by F2,6BP Def in pyr kinase leads to... - ANSWER 2,3BPG, G6P elevation due to ^ PEP What steroid can be used to treat beta-blocker overdose? - ANSWER glucagon Which form of aldolase is liver-specific? - ANSWER B triose phosphate isomerase - ANSWER G3P <-> DHAP; DHAP - component of glycerol phosphate sh...

Biochemistry NBME 2024 LATEST EXAM QUESTIOS AND ANSWERS Translation - ANSWER mRNA codon read 5->3, so tRNA anticodon is 3->5 20 aminoacyl-tRNA synthetases (1 per a.a.) bring a.a to tRNA, using ATP to bind a.a. to the enzyme Met-tRNA is sitting in P-site on small subunit when AUG codon recognizes it, allowing large subunit to join Next aminoacyl-tRNA comes into A site, peptide bond forms (using peptidyl transferase, an ribozyme) as existing chain transfers onto A s...

PEDIATRICS NBME 2024 EXAM QUESTIONS WITH CORRECT SOLUTIONS |GRADED A+ PART 1: A 3-year-old boy is brought for a well-child examination. His mother states that his belly seems big. His vital signs are within normal limits. Examination shows aniridia. There is a palpable mass in the right flank. The remainder of the examination shows no abnormalities. Which of the following is the most appropriate next step in diagnosis? A. Measurement of serum catecholamine concentration B. Measurement o...

NBME 25 2024 UPDATED EXAM QUESTIONS AND CORRECT ANSWERS |GRADED A+ 1. A9-year-old boy has had alopecia and hypocalcemia since birth. His serum 1,25-dihydroxycholecalciferol concentration is within the reference range, serum 24,25-dihydroxycholecalciferol is undetectable. Serum parathyroid hormone concentration is above the upper limit of the laboratory assay and needs to be reassayed at a dilution. The results are pending. Which of the following is the most likely cause of his condition? O ...

NBME 13 2024 UPDATED QUESTIONS AND VERIFIED ANSWERS Previously healthy 6 y/o girl presents with abdominal pain + nausea + vomiting 4 hours after attending a friends birthday party; What is the cause of these findings? - ANSWER Enterotoxin ingestion A 39-year-old woman with end-stage renal disease caused by systemic lupus erythernatosus undergoes kidney transplantation from a living, unrelated donor. Despite aggressive immunosuppressive therapy, the transplant is rejected after 6 months....

NBME 19 2024 EXAM QUESTIONS AND REVIEWED CORRECT ANSWERS 23yo women strenuous exercise. X-sectional area of pulmonary microcirculation? - ANSWER increased, as a result of distention and recruitment of microvessels 33yo woman had weakness of right lower 2/3 of face. Where is brain lesion? - ANSWER Primary motor cortex 30 yo man and 24 yo woman genetic counseling. Man's brother has type 1 oculocutaneous albinism (AR). Single gene disorder 1/40,000 in population. Pedigree shown. What ar...

NBME EXAM QUESTIONS WITH VERIFIED SOLUTIONS |GRADED A+ Ethanol lead sto induction of P450 enzymes that result in increased production of NAPQI when high doses of tylenol taken. depletin of glutathione. give NAC. translocations - ANSWER balanced - no significant consequence unless the break point affects a regulatory sequence or section of an exam that results in reduced or absent translation of encoded protein. regulatory sequences: promoters, enhancers, silencers Frank Starl...