Cbse Study guides, Class notes & Summaries

CBSE Biochem Lesch-Nyhan Syndrome: what causes it and what are manifestations? - correct answersHGPRT 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 answersAllopurinol / febuxostat second ...

Chagas Disease - correct answersCaused by Trypanosoma cruzi parasite passed in the feces of Reduviidae/kissing bug Penetrates broken skin or intact mucous membranes forming a pseudocyst releasing inflammatory infiltrates into myocytes; stains with Giemsa & Wright Romana sign occurs when portal of entry is the conjunctiva or eyelid May resulting in: Enlarged heart- CHF, sudden cardiac arrest Enlarged esophagus- difficulty swallowing Enlarged colon- abdominal pain or constipation T...

Chemistry: Is Matter Around us Pure? Revised Test 2023.Pure Substances - ANSWER A material which has one type of atoms and molecules - Has a fixed composition - Made of only one type of component - Has fixed melting and boiling point - Cannot be separated into constituents by physical processes Impure substances - ANSWER A mixture contains different substances that are not chemically joined to each other. - Maybe homogenous or heterogenous - Can be separated into its constituents by phy...

Biology : Tissues Updated Version 2023.Tissues - ANSWER groups of similar cells that perform a specific function in an organism Types of tissues - ANSWER epithelial, connective, muscle, nervous EPITHELIAL TISSUE - ANSWER * lies above the entire body, forms a protective covering. Also forms barriers between organs to separate them* - tightly packed cells with no spaces - all epithelial cells rest on a basement membrane - has a small amount of cementing material - every substance passi...

Anatomy 100 concepts Correct Verified Solutions what vertebral level(s) should you perform a lumbar puncture ? - ANSWER L3/L4 or L4/L5; level of the iliac crests when doing a lumbar puncture, what does your needle pierce through - ANSWER skin --> fascia --> supraspinous ligament --> interspinous ligament --> ligamentum flavum --> epidural space --> dura mater --> subarachnoid space What is a herniated disc? - ANSWER nucleus pulposus through anulus fibrosus (nucleus pu...

Biochemistry USMLE step 1 Review Course nes are rich in which 2 AA's - ANSWER lysine & argenine Barr bodies (what, type of chromatin) - ANSWER inactive X chromosomes heterochromatin (highly condensed, sterically inaccessible) less condensed, transcriptionally active, sterically accessible chromatin - ANSWER euchromatin DNA methylation at CpG islands - ANSWER represses transcription "CpG Methylation makes DNA Mute" DNA methylation (what is methylated and why?) - ANSWER template...

Pathology USMLE step 1 Final Exam Study Guide 2023.Anticentromere antibodies - ANSWER Scleroderma (CREST) Antidesmoglein (epithelial) antibodies - ANSWER Pemphigus vulgaris (blistering) Anti-glomerular basement membrane antibodies - ANSWER Goodpasture's syndrome (glomerulonehpritis and hemoptysis) Antihistone antibodies - ANSWER Drug-induced SLE (hydralazine, isoniazid, phenytoin, procainamide) Anti-IgG antibodies - ANSWER Rheumatoid arthritis (systemic inflammation, joint pannus, b...

CBSE Class 10 English letter to god Final Test are there in the lesson a letter to god - ANSWER Lencho Postman Women Who is the author? - ANSWER G.L. Fuentes Where did lencho live - ANSWER Lencho lives in the entire valley on the Crest of a low hill what happened to lencho`a farm? - ANSWER Due to the sudden strong wind began to blow with the rain and very large hailstones began to fall. Whom does lencho wrote a letter? - ANSWER To the God

Pharmacology USMLE step 1 Complete Test 2023.What are the major functions of the α1 receptor? - ANSWER Increase vascular smooth muscle contraction, increase pupillary dilator muscle contraction (mydriasis), increase intestinal and bladder sphincter muscle contraction What are the major functions of the α2 receptor? - ANSWER Decrease sympathetic outflow, decrease insulin release, decrease lipolysis, increase platelet aggregation, decrease aqueous humor production What are the major functi...