USMLE

USMLE: Microbiology Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 1. Cause of Chagas disease - ANS Trypanosoma cruzi 2. Amoebic dysentery - ANS Entamoeba histolytica 3. African sleeping sickness - ANS Trypanosoma brucei 4. Protozoal diarrhea in campers and hikers - ANS Giardia 5. Protozoa transmitted in raw meat or infected cat faeces - ANS Toxoplasma 6. Protozoa transmitted by sandflies - ANS Leishmania 7. Causes vaginitis - ANS Trichomoniasis 8. Fo...

Biochemistry USMLE step 1 Exam Questions with Correct Verified Answers Latest Update (2024/2025) Guaranteed Pass Inhibit dihydrofolate reductase (DHFR) - ANS methotrexate (MTX) in humans Trimethoprim (TMP) in bacteria Pyrimethamine in protozoa Prevents pyrimidine synthesis (dump --> dtmp) Folate is supplemental for which drugs and why? - ANS 5-FU > increase potency MTX > reduce side effects Major cause of AR SCID and why - ANS adenosine deaminase (ADA) deficiency Preve...

USMLE step 3 Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 75 yo M smoker presents w/ pain in calves on exertion. PE notes smooth shiny skin with hair loss. dx, w/u, tx, f/u - ANS dx: PAD w/u: ABI (best initial), Angiography (most accurate) tx: best initial: ASA, ACE (for bp control), exercise, cilostazol, statins (LDL <100)--> bypass if gangrene or resting pain. CCBs are ineffective! f/u: several weeks. 75 yo M w/ HTN, MI, cardiomyopathy presents to offi...

USMLE Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 1. Culture Negative Endocarditis - ANS Coxiella burnetti Bartonella spp. HACEK T. Whipple 2. False Positive VDRL - ANS Pregnancy Viruses (EBV) Drugs Rheumatic fever Leprosy, SLE 3. Bacterial with low infective dose - ANS Shigella Campylobacter EIEC Entamoeba histolytica Giardia 4. Pseudomonas Properties - ANS Oxidase (+) Motile Non-lactose fermenter Aerobic Mucoid polysaccharide capsule Grape-li...

USMLE Histology Exam Questions with Correct Verified Solutions 100% Guaranteed Pass What strains of HPV cause condylomata accuminatum? - ANS 6 and 11 cause genital warts. This is not the cause of CIN!. That is 16,18,31,33,35. HPV assd oncogenesis is caused by proteins E6 and E7 which knock out Rb and P53 causing uninterrupted cell cycle growth. Which subunit of ribosome attaches to RER? - ANS Large subunit. It binds to riboporins on ER. Where are the Z line in a sarcomere? - ANS They ar...

USMLE Genetics Exam Questions with Correct Verified Answers Latest Update (2024/2025) Guaranteed Pass 1. What is the Hardy-Weinberg Equation? - ANS P squared + 2PQ + Q Squared =1 2. What do P and Q stand for in the HQ equation? - ANS The frequency of allele 1 (P) and allele 2(Q) 3. What is Psquared in the HQ equilibrium? - ANS The frequency of genotype allele 1 and allele1 2pq is frequency of genotype allele 1 and allele 2 (heterzogote prevalaence) etc... 4. Most common cause of los...

USMLE Step 1 Rapid Review Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 1. Green-yellow rings around peripheral iris - ANS ?Kayser-Fleischer rings (copper accumulation from Wilson's disease) 2. Hamartomatous GI polyps, hyperpigmentation of mouth, feet and hands - ANS ?Peutz-Jeghers syndrome 3. Hepatosplenomegaly, osteoporosis, neurologic symptoms, crinkled cytoplasm - ANS ?Gaucher's disease (glucocerebrosidase deficiency) 4. Hereditary nephritis, sensorine...

USMLE Lysosomal Storage Diseases Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 1. What are the findings in Metachromatic leukodystrophy? - ANS central and peripheral demyelination with ataxia, dementia. 2. what is the deficient enzyme in hurler's syndrome? - ANS alpha-L-iduronidase 3. What is the accumulated substrate and inheritance in hurler's syndrome? - ANS heparan sulphate, dermatan sulphate, and AR 4. What are the findings in hurler's syndrome? - ...

Pathology USMLE step 1 Exam Questions with Correct Verified Answers Latest Update (2024/2025) Guaranteed Pass 1. Hypochromic microcytic anemia - ANS Iron deficiency anemia, lead poisoning, thalassemia (HbF sometimes present) 2. Increased alpha-fetoprotein in amniotic fluid/maternal serum - ANS Dating error, anencephaly, spina bifida (neural tube defects) 3. Increased uric acid levels - ANS Gout, Lesch-Nyhan syndrome, tumor lysis syndrome, loop and thiazide diuretics 4. Intranuclear e...

USMLE Step 1 Antibiotics Exam Questions with Correct Verified Solutions 100% Guaranteed Pass 1. Aminoglycoside use - ANS no anaerobe coverage; severe gram - rod infections; synergistic with beta lactams; neomycin for bowel surgery 2. Aminoglycoside toxicity - ANS nephrotoxicity (esp with cephalosporins), ototoxicity (esp with loop diuretics), teratogen 3. Aminoglycoside resistance - ANS drug modification via transferases 4. Tetracycline mechanism - ANS binds to 30s and prevents attac...