USMLE STEP{1}BIOCHEMISRTY MADE EASY: HIGH-YIELD CONCEPTS AND QUESTIONS AND CORRECT ANSWERS 2025|| 2026 ||ALREADY GRADED A+

USMLE STEP{1}BIOCHEMISRTY MADE EASY:
HIGH-YIELD CONCEPTS AND QUESTIONS AND
CORRECT ANSWERS 2025|| 2026 ||ALREADY
GRADED A+

often precedes squamous cell carcinoma - CORRECT ANSWERS - actinic
keratosis


primary adrenocortical deficiency - CORRECT ANSWERS - Addison's
disease


polyostotic fibrous dysplasia, precocious puberty, cafe-au-lait spots, short
stature, young girls - diagnosis? - CORRECT ANSWERS - Albright's
syndrome


hereditary nephritis with nerve deafness - CORRECT ANSWERS - Alport's
syndrome


anti-basement membrane antibodies - diagnosis? - CORRECT ANSWERS -
Goodpasture's syndrome


anticentromere antibodies - diagnosis? - CORRECT ANSWERS -
scleroderma (CREST)


anti-double-stranded DNA antibodies (ANA antibodies) - diagnosis?
- what hypersensitivity type? - CORRECT ANSWERS - SLE - type III
hypersensitivity

,anti-epithelial cell antibodies - diagnosis? - CORRECT ANSWERS -
pemphigus vulgaris


antigliadin antibodies - diagnosis? - CORRECT ANSWERS - celiac disease


antihistone antibodies - diagnosis? - CORRECT ANSWERS - drug-induced
SLE


anti-IgG antibodies - diagnosis? - CORRECT ANSWERS - rheumatoid
arthritis


antimitochondrial antibodies - diagnosis? - CORRECT ANSWERS -
primary biliary cirrhosis


antineutrophil antibodies - diagnosis? - CORRECT ANSWERS - vasculitis


antiplatelet antibodies - diagnosis? - CORRECT ANSWERS - idiopathic
thrombocytopenic purpura


arachnodactyly - diagnosis? - CORRECT ANSWERS - Marfan's syndrome


Argyll-Robertson pupil - diagnosis? - CORRECT ANSWERS -
neurosyphilis


Arnold-Chiari malformation - CORRECT ANSWERS - cerebellar tonsillar
herniation


Aschoff bodies - diagnosis? - CORRECT ANSWERS - rheumatic fever

,atrophy of the mammillary bodies - diagnosis? - CORRECT ANSWERS -
Wernicke's encephalopathy


Auer rods - diagnosis? - CORRECT ANSWERS - acute myelogenous
leukemia (especially promyelocytic type)


autosplenectomy - diagnosis? - CORRECT ANSWERS - sickle cell anemia


Babinski's sign is associated with what? - CORRECT ANSWERS - UMN
lesion


"bamboo spine" on x-ray - CORRECT ANSWERS - ankylosing spondylitis


basophilic stippling of RBCs - diagnosis? - CORRECT ANSWERS - lead
poisoning


defective dystrophin, less severe than Duchenne's - CORRECT ANSWERS -
Becker's muscular dystrophy


LMN CN VII palsy - CORRECT ANSWERS - Bell's palsy


Bence Jones proteins - possible diagnoses?
- in each case, what are the proteins? - CORRECT ANSWERS - multiple
myeloma - kappa or lambda light chains
Waldenstrom's macroglobulinemia - IgM


IgA nephropathy - diagnosis? - CORRECT ANSWERS - Berger's disease


Bernard-Soulier disease - what is the defect? - CORRECT ANSWERS -
defect in platelet adhesion

, bilateral hilar adenopathy, uveitis - diagnosis? - CORRECT ANSWERS -
sarcoidosis


Birbeck granules on EM - diagnosis? - CORRECT ANSWERS -
histiocytosis X (eosinophilic granuloma)


bloody tap on LP - diagnosis? - CORRECT ANSWERS - subarachnoid
hemorrhage


"blue bloater" - CORRECT ANSWERS - chronic bronchitis


blue-domed cysts - diagnosis? - CORRECT ANSWERS - fibrocystic change
of the breast


blue sclera - diagnosis? - CORRECT ANSWERS - osteogenesis imperfecta


boot-shaped heart on x-ray - possible diagnoses? - CORRECT ANSWERS -
tetralogy of Fallot or RVH


Bouchard's nodes - diagnosis?
- where are they located?
- why do they occur? - CORRECT ANSWERS - osteoarthritis - on PIP
secondary to osteophytes


boutonniere deformity - diagnosis? - CORRECT ANSWERS - rheumatoid
arthritis


branching rods in oral infection - diagnosis? - CORRECT ANSWERS -
Actinomyces israelii