Cystathionine Study guides, Class notes & Summaries

A 33-year-old G1P0 female with a history of medically controlled seizures gives birth vaginally to a boy with IUGR at 38 weeks' gestation. The newborn is noted to have dysmorphic cranial features and his head circumference is 28.5 cm (< 5th percentile). What is another associated abnormality you might expect to see in this newborn? A. Hepatosplenomegaly B. Cardiac defects C. Absent red reflex D. Chorioretinitis E. Tremors B. The mother was on an anticonvulsant for her seizures. Taking...

UNE Biochemistry Final, Final, Final Exam Review UNE medical biochemistry Already Graded A+ A comatose infant is brought to the ER. In the course of the examination, plasma ammonia was found to be elevated 20-fold over normal values. Urine orotic acid and uracil were both greater than normal. A defect of which of the following enzymes is the most likely diagnosis? Ornithine transcarbamoylase Your patient presents with a deficiency of the enzyme that catalyzes synthesis of N-acetylglutamate ...

UNE BioChem unit 4 multiple choice questions with certified answers Which of the following non-essential amino acids is synthesized as part of the urea cycle? Arginine Which of the following reactions of the urea cycle takes place in the mitochondria? The synthesis of carbamoyl phosphate The transamination of all amino acids requires which of the following cofactors? Pyridoxal phosphate (PLP) A comatose infant is brought to the ER. In the course of the examination, plasma ammonia was found t...

Vitamin B1 (thiamine) - Deficiency - Impaired glucose breakdown p ATP depletion worsened by glucose infusion; highly aerobic tissues (eg, brain, heart) are affected first. In alcoholic or malnourished patients, give thiamine before dextrose to reduce risk of precipitating Wernicke encephalopathy. Diagnosis made by increase in RBC transketolase activity following vitamin B1 administration Vitamin A (retinol) - Excess - Acute toxicity—nausea, vomiting, vertigo, and blurred vision. Chronic t...

ISSB Tumor Markers (Henry's 22nd ed) Exam Prep 2023. Brain tumor - ANSWER *Major Marker:* Desmosterol *Minor Marker:* Polyamines Neuroblastoma - ANSWER *Major Marker:* VMA *Minor Marker:* HVA, NSE, cystathionine, ferritin, metanephrines Squamous cell carcinoma of the head and neck - ANSWER *Major Marker:* CYFRA 21-1 Pituitary tumors - ANSWER *Major Marker:* Growth hormone *Minor Marker:* IGF-I Adrenal pituitary tumors - ANSWER *Major Marker:* Cortisol *Minor Mar...

UNE Biochemistry Final, Final, Final Exam Review UNE medical biochemistry Already Graded A+ A comatose infant is brought to the ER. In the course of the examination, plasma ammonia was found to be elevated 20-fold over normal values. Urine orotic acid and uracil were both greater than normal. A defect of which of the following enzymes is the most likely diagnosis? Ornithine transcarbamoylase Your patient presents with a deficiency of the enzyme that catalyzes synthesis of N-acetylglutamate ...

UNE Biochemistry Final Questions With 100% Correct Answers. The glucose-alanine cycle is a method of transferring ammonia from the skeletal muscle to the liver. In this process the non-toxic carrier of ammonia is which of the following compounds? Alanine Which of the following enzymes is correctly paired with its activator? N-acetylglutamate synthatase; arginine The urea cycle takes place in which of the following subcellular locations? the cytosol and the mitochondria Which of the foll...

UNE Biochemistry Final Exam Review Questions With 100% Correct Answers A comatose infant is brought to the ER. In the course of the examination, plasma ammonia was found to be elevated 20-fold over normal values. Urine orotic acid and uracil were both greater than normal. A defect of which of the following enzymes is the most likely diagnosis? - answerOrnithine transcarbamoylase Your patient presents with a deficiency of the enzyme that catalyzes synthesis of N- acetylglutamate (NAGs). Wh...

UNE Biochem Unit 4 Multiple Choice Questions With 100% Complete Answers. Which of the following non-essential amino acids is synthesized as part of the urea cycle? Arginine Which of the following reactions of the urea cycle takes place in the mitochondria? The synthesis of carbamoyl phosphate The transamination of all amino acids requires which of the following cofactors? Pyridoxal phosphate (PLP) A comatose infant is brought to the ER. In the course of the examination, plasma ammonia w...

UNE Medical Biochemistry Unit 4 Questions & Answers Which of the following statements is consistent with nitrogen transport in the fasted state? Glutaminase will be inactive The urea cycle will be active Hepatic glutamate dehydrogenase will primarily produce glutamate Transport of alanine from skeletal muscle will be reduced The urea cycle will be active Which of the following enzymes is likely to be active in both the fed and fasted states? Glycogen synthase Pyruvate kinase Horm...