BIOCHEM BRS

BIOCHEM EXAM 3 BRS QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED The synthesis of fatty acids from glucose in the liver is best described by which one of the following? (A) The pathway occurs solely in the mitochondria. (B) It requires a covalently bound derivative of pantothenic acid. (C) It requires NADPH derived solely from the pentose phosphate pathway. (D) The pathway is primarily regulated by isocitrate. (E) The pathway does not utilize a carboxylation reaction ...

BIOCHEM EXAM 3 MCQS (ICS/SDL/BRS) QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED E. Has a cyclic structure, distinct R group is least likely to have an error. If the R group is distant or unique it is least likely to pick up a different amino acid. Which amino acid is least likely to have an error made by its corresponding aminoacyl tRNA synthetase? A. Isoleucine tRNA synthetase is slightly larger than Valine tRNA synthetse. It is more likely to mistakenly put valine in place of iso...

BRS: BIOCHEM NITROGEN METABOLISM ?S EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS 1. The answer is A. Trypsin cleaves and thus activates the pancreatic zymogens, converting chymotrypsinogen to the active form, chymotrypsin, and the procarboxypeptidases to the active carboxypeptidases. If trypsin were inactive, the other proteases could not be activated because enteropeptidase is specific for trypsinogen. Pepsin is found in the stomach, whereas aminopeptidases are intestinal enzymes found o...

BIOCHEM BRS BOOK- PRINCIPLES 2 TEST 2 EXAM QUESTIONS AND ANSWERS 9. A 4-month-old infant presents with a seizure. His mother reports that her infant has been irri- table and lethargic over the past several days. The infant is found to be profoundly hypoglyce- mic and have low ketones. Short-chain dicar- boxylic acids are found to be elevated in the serum. The most likely enzyme deficiency is which of the following? A) Medium-chain acyl CoA dehydrogenase (MCAD) B) Carnitine acyltransferase I...

KYCOM 2020-BLOCK 2 BIOCHEM BRS BOOK QUESTIONS AND ANSWERS WITH VERIFIED SOLUTIONS transfer glucose from UDP-glucose to the nonreducing end of a glycogen primer A newborn is found to have fasting hypoglycemia. The nursery staff begins overnight feeds by nasogastric tube because they find that the child has consistently low blood sugars. A liver biopsy and molecular studies demonstrate an absence of glycogen synthase. The normal function of this enzyme is to do what? loss of a lysosomal glucosi...

BIOCHEM BRS AND ICS SECTION 2 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE D. GIcNAc-phosphate Bacterial pneumonia can be caused by the gram-positive bacteria Streptococcus pneumoniae. Treatment with tunicamycin, which inhibits bacterial cell wall glycoprotein synthesis, blocks the attachment of which of the following to the nascent oligosaccharide core? A. Glucose B. Mannose C. GICNAC D. GIcNAc-phosphate E. A phosphate group C. Segregating membrane or secr...

BRS BIOCHEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ Which condition can lead to life-threateningautodigestion of lipids and proteins? Pancreatitis A 38-year-old man gets bloated and has epi-sodes of diarrhea after eating his favorite icecream. It also occurs when he consumes yogurt,cheese, and other milk-containing products.The patient lacks the ability to cleave which oneof the following glycosidic bonds Galactose-b(1fi4) glucose A child is brought to your clinic who ...

BRS BIOCHEM EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Structure/Function: This disorder affects the enzyme lysyl hydroxylase, results in a defect in collagen synthesis Ehlers-Danlos syndrome [A heterogenous group of disorders of collagen synthesis, marked by hyperextensible joints and skin; inheritance can be autosomal recessive or autosomal dominant, and at least one type is X-linked recessive] Structure/Function: Caused by mutations in the FBN1 gen...

BIOCHEM BR EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED WOTF cannot cross the membrane? A) Malate B) Oxalacetate - has to be converted into malate (which can cross over) C) ADP D) Citrate B) Oxalacetate - has to be converted into malate (which can cross over) WOTF is the end product of purine metabolism? A) Urea - end product of basic nitrogen B) Uric acid C) Hypoxanthine D) Xanthine B) Uric acid WOTF is the key enzyme involved in purine breakdown? A) Phosphofr...

BIOCHEM BRS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED A bacterial mutant grows normally at 32°C but at 42°C accumulates short segments of newly synthesized DNA. Which one of the following enzymes is most likely to be defective at the nonpermissive temperature (the higher temperature) in this mutant? (A) DNA primase (B) DNA polymerase (C) An exonuclease (D) An unwinding enzyme (helicase) (E) DNA ligase (E) DNA ligase An RNA produced from a fragment of DNA has the seq...