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  1. USMLE Step 1 Forum
    The DNA sequence M, shown below, is the sense strand from a coding region known to be a mutational “hot spot” for a gene. It encodes amino acids 21 to 25. Given the genetic and amino acid codes CCC = proline (P), GCC = alanine (A), TTC = phenylalanine (F), and TAG = stop codon, which of the...
  2. USMLE Step 1 Forum
    Hey guys, I'm reading my FA again and was wondering what is the primary source of energy for RBCs during starvation because they can't use ketones? Please let me know whenever you have a chance. Thanks and happy studying! - Stepp
  3. USMLE Step 1 Forum
    Hi Guys, I am a bit confused with the answer given by Kaplan note 2013 in biochem book. In the review questions:- 1)The peptide ala-arg-his-gly-glu is treated with peptidases to release all of the amino acids. The solution is adjusted to ph7, and electrophoresis is performed. In the...
  4. USMLE Step 1 Forum
    A patient with manic depressive disorder is treated with lithium, which slows the turnover of inositol phosphates and the phosphatidyl inositol derivatives in cells. Which of the following protein kinases is most directly affected by this drug? A. Protein kinase C B. Receptor tyrosine kinase C...
  5. USMLE Step 1 Study Partners
    hi everyone, Does anybody have molecular biology & biochemistry offline qs link? any help regarding this will be highly e mail id [email protected]
  6. USMLE Step 1 Forum
    How many chapters per day for Lippincott's Biochemistry is enough? 2 chapters per day is good or more is possible?
  7. USMLE Step 1 Forum
    I have a question related to allosteric inhibitors.. let's say we have an allosteric inhibitor of an enzyme, If the noncompetitive inhibitor binding to the enzyme at the site of substrate will decrease the Vmax but won't decrease the Km, what about the allosteric inhibitor of the enzyme, will...
  8. USMLE Step 1 Forum
    Why do we get hypertension with this deficiency? Happy-2 Plus wouldn't RAAS be suppressed overtime so it wouldn't be due to Ang 2?
  9. USMLE Step 1 Forum
    why doesn't iron deficiency cause symptoms of porphyria like lead poisoning, i.e to cause acquired porphria? second Q, photosensitivity occurs in porphria cutanea tarda duo to elevation of porphyrin, so why doesn't this occur with lead poisoning and iron deficiency??
  10. USMLE Step 1 Forum
    I really did not like Kaplan biochemistry. It was too sophisticated and contained so much details. After all, I decided to study FA and used Kaplan for understanding some parts. It really wasted my time.
  11. USMLE Step 1 Forum
    According to uworld glucocorticoids have catabolic functions BUT it increase protein synthesis in liver... How it is possible it actually promote glucoNEOgenesis means breakdown of proteins but on other hand uworld saying it increase protein synthsis in liver...
  12. USMLE Step 1 Forum
    Impaired transport of ornithine from cytosol to mitochondria..restriction of which substance is necessary.. 1) fats 2) proteins 3) purines Ans is proteins BUT why not purines???
  13. USMLE Links & Free Ads
    Biochemistry will finally make sense to you after you learn it from Kaplan's top-rated faculty and Biochem master, Dr. Sam Turco. You will get Dr. Turco's expert, high-energy review and real-time answers to your questions by Kaplan's teaching assistants. Reserve your space now in this free event...
  14. USMLE Step 1 Forum
    Folks who have took the exam already Can you guys please throw some light on what areas of Molecular /Biochem and Anatomy do we focus upon. There seems to be an increasing trend of being tested in these subjects. Thank you.
  15. USMLE Step 1 Forum
    I started the 2ed revision of bio , I'm reading KLN for 2ed time then reading FA for 1st time.. I noticed that a lot of information which is mentioned in KLN not in mentioned in FA What should I do ? concentrated on what on FA .. and write the related addition info about it . or write the...
  16. USMLE Step 1 Forum
    Finding bioche-metabolism very difficult.....went through kaplan videos and now doing FA....what else to do?...please suggest any solution...:o:o:confused::confused:
  17. USMLE Step 1 Forum
    Could you tell me your opinion about rapid review biochemistry please I am planning to use it thank you
  18. USMLE Step 1 Forum
    Ok, this one is probably a very overlooked topic but a very High Yield one, so lets start a discussion and postings of useful links and Vids explaining USMLE Lab Techniques found in Genetics/Immuno/Biochem etc. ( PCR, Blots, Assays, Coombs for instance) Kindly post useful videos that you have...
  19. USMLE Step 1 Forum
    When glucose originally gets phosphorylated in the cell with either hexokinase/glucokinase where does the ATP investment originally come from if the whole point is to make ATP?
1-20 of 500 Results