Lesch nyhan syndrome Study guides, Class notes & Summaries
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PATHOLOGY HIGH YIELD NBME ELABORATED QUESTIONS AND REVIEWED ANSWERS 2023/2024
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PATHOLOGY HIGH YIELD NBME 
ELABORATED QUESTIONS AND 
REVIEWED ANSWERS 2023/2024 
Anticentromere antibodies - CORRECT ANSWER-Scleroderma (CREST) 
Antidesmoglein (epithelial) antibodies - CORRECT ANSWER-Pemphigus vulgaris 
(blistering) 
Anti-glomerular basement membrane antibodies - CORRECT ANSWER-Goodpasture's 
syndrome (glomerulonehpritis and hemoptysis) 
Antihistone antibodies - CORRECT ANSWER-Drug-induced SLE (hydralazine, 
isoniazid, phenytoin, procainamide) 
Anti-IgG antibodies - CORREC...
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USMLE Step 1 - uWorld High Yield Notes Exam 2023
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USMLE Step 1 - uWorld High Yield Notes 
Exam 2023 
What are the two major microtubular motor proteins? Which does anterograde axonal 
transport, which does retrograde axonal transport? - Answer-Kinesin, Dynein 
Kinesin: Anterograde 
Dynein: Retrograde` 
What do you think, immunologically speaking, when you see someone with recurrent 
Neisseria infections? - Answer-Inability to form the membrane attack (MAC) complex 
this is a common complement deficiency 
What is the defect in Chronic Granulom...
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USMLE STEP 1- First AidDiseases/Disorders/Deficiencies/Syndromes
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USMLE STEP 1- First AidDiseases/Disorders/Deficiencies/Syndromes 
Exam 2023 (A+) 
Adenosine deaminase (ADA) deficiency - ANS-An immunodeficiency disorder and one 
type of SCIDs that is caused by an *inborn error in the metabolism of adenine*. The 
accumulation of adenine destroys both B and T lymphocytes. 
Increase in dATP is lymphotoxic 
Lesch-Nyhan syndrome - ANS-*Defective purine salvage due to absent HGPRT*, which 
converts hypoxanthine to IMP and guanine to GMP. Results in *excess uric ...
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OT 667 Pediatric Test 2 (Psychology) Questions And Answers
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OT 667 Pediatric Test 2 (Psychology) Questions And Answers 
T/F Children with developmental disabilities may face psychiatric illnesses specific to their disorder - 
ANS-true 
T/F The presence of developmental disability can alter symptomatic presentation of psychiatric 
disorders, making accurate diagnosis more difficult - ANS-true 
When "dual diagnosis" is not recognized, children can- - ANS-fail in educational and social settings. be 
unmanageable at home, and show aggression and self-inj...
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STEP 1 USMLE REVIEW 2022/2023
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often precedes squamous cell carcinoma - ANSWER actinic keratosis 
 
primary adrenocortical deficiency - ANSWER Addison's disease 
 
polyostotic fibrous dysplasia, precocious puberty, cafe-au-lait spots, short stature, young girls - diagnosis? - ANSWER Albright's syndrome 
 
hereditary nephritis with nerve deafness - ANSWER Alport's syndrome 
 
anti-basement membrane antibodies - diagnosis? - ANSWER Goodpasture's syndrome 
 
anticentromere antibodies - diagnosis? - ANSWER scleroderma (CREST)...
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CBSE Biochem Exam Questions with 100% Correct Answers
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Lesch-Nyhan Syndrome: what causes it and what are manifestations? Correct Answer HGPRT deficiency in purine salvage pathway (this enzyme normally converts hypoxanthine to IMP and guanine to GMP). This deficiency leads to excessive Uric acid production and de novo purine synthesis. It is X linked recessive. Symptoms: hyperuricemia, gout, aggression / self mutilation, mental retardation, dystonia. 
 
Treatment for Lesch-Nyhan? Correct Answer Allopurinol / febuxostat second line. Both of these drug...
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USMLE Step 1 - uWorld High Yield Notes
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USMLE Step 1 - uWorld High Yield Notes 
 
What are the two major microtubular motor proteins? Which does anterograde axonal transport, 
which does retrograde axonal transport? - Kinesin, Dynein 
 
Kinesin: Anterograde 
Dynein: Retrograde` 
 
What do you think, immunologically speaking, when you see someone with recurrent Neisseria 
infections? - Inability to form the membrane attack (MAC) complex 
this is a common complement deficiency 
 
What is the defect in Chronic Granulomatous disease? What...
-
USMLE Step 1 - uWorld High Yield Notes
- Exam (elaborations) • 66 pages • 2024
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- $11.99
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USMLE Step 1 - uWorld High Yield Notes 
 
What are the two major microtubular motor proteins? Which does anterograde axonal transport, 
which does retrograde axonal transport? 
- Kinesin, Dynein 
 
Kinesin: Anterograde 
Dynein: Retrograde` 
 
What do you think, immunologically speaking, when you see someone with recurrent Neisseria 
infections? - Inability to form the membrane attack (MAC) complex 
this is a common complement deficiency 
 
What is the defect in Chronic Granulomatous disease? Wha...
-
BIO 315 Exam 1 Questions and Answers 100% Pass
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BIO 315 Exam 1 Questions and Answers 100% Pass 
Humans have 23 pairs of chromosomes. Chromosomes 1-22 are best referred to as 
______. 
a. Centromeres 
b. Autosomes 
c. Karyotype 
d. Nuclei 
e. Sex chromosomes - Correct Answer ️️ -B 
How many DNA molecules would be found in a single chromosome? 
a. 4 
b. 10 
c. More than 10 
d. 1 
e. 2 - Correct Answer ️️ -D 
An alternate form of a gene is called a(n) ________. 
a. Allele 
b. Exome 
c. Genome 
d. Chromosomes 
e. mutation - Correct Answer...
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BIO 315 Exam 1 Questions and Answers
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Humans have 23 pairs of chromosomes. Chromosomes 1-22 are best referred to as ______. 
a. Centromeres 
b. Autosomes 
c. Karyotype 
d. Nuclei 
e. Sex chromosomes - Answer-B 
How many DNA molecules would be found in a single chromosome? 
a. 4 
b. 10 
c. More than 10 
d. 1 
e. 2 - Answer-D 
An alternate form of a gene is called a(n) ________. 
a. Allele 
b. Exome 
c. Genome 
d. Chromosomes 
e. mutation - Answer-A 
The Central Dogma is best described as ______. 
a. DNA to Protein to RNA 
b. Protein ...