Ochem 1 Study guides, Class notes & Summaries

Somatostatin reduces the secretion of both glucagon and insulin through which of the following mechanisms? a. Somatostatin activates an activator G-protein b. Somatostatin activates MAPK cascade c. Somatostatin activates an inhibitory G-protein d. Somatostatin uses Ca+2 as a downstream signal correct answer: c. Somatostatin activates an inhibitory G-protein Insulin mediated glucose uptake by muscle and adipose tissue is a result of which of the following mechanisms? a. Translocatio...

Cysteine is a nonessential amino acid as it can be synthesized from: correct answer: Methionine All transaminiation reactions require: correct answer: Pyridoxal Phosphate Synthesis of Tyrosine requires: correct answer: Tetrahydrobiopterin (BH4) PKU results from a heritable defect in: correct answer: Phenylalanine hydroxylase Phenylkentonuria can also present as a result of a deficiency in: correct answer: Tetrahydrobiopterin (BH4) Metabolism of Glycine requires: correct answe...

Which of the following is the major regulation point for transport of fatty acids into the mitochondria? correct answer: carnitine acyltransferase I The primary activation of triacylglycerol mobilization in adipocytes is through __________ of the enzyme ____________. correct answer: phosphorylation; hormone sensitive lipase Which of the following lipoproteins distributes dietary lipids? correct answer: chylomicron Which of the following statements regarding lipid digestion and absorp...

Biochemistry Final Exam UNE CHEM 1005 (Weeks 9-15) Q’s & A’s Solved 100% Correct!!

The second messenger in the signaling cascade initiated by glucagon is: correct answer: cAMP Explanation: The second messenger for glucagon is cAMP. Review Module 2 GPCR signaling cascades When insulin is bound to its receptor an autophosphorylation event occurs and the IRS binds these phosphorylated sites through interactions with the: correct answer: SH2 domain Explanation: SH2 domains bind with phosphorylation sites and allow for docking of the IRS with the insulin receptor. Insulin...

A 16-year-old girl complains that she often feels light-headed and dizzy just before lunch at school. She tells you that she often does not eat breakfast. She almost always feels better after lunch. You explain to her that she is experiencing hypoglycemia. Under these conditions, you would expect: correct answer: Glycogen phosphorylase kinase to be phosphorylated and active A 3-year old male presents to the emergency room with hypoglycemia folloign a brief seizure. His parents put him to bed...

Which of the following is the major regulation point for transport of fatty acids into the mitochondria? correct answer: carnitine acyltransferase I The primary activation of triacylglycerol mobilization in adipocytes is through __________ of the enzyme ____________. correct answer: phosphorylation; hormone sensitive lipase Which of the following lipoproteins distributes dietary lipids? correct answer: chylomicron Which of the following statements regarding lipid digestion and absorp...

Biochemistry Final Exam: UNE CHEM 1005 Exam Questions And Answers Control of Fatty Acid Synthesis vs. Oxidation - ANS When Insulin is HIGH --> fatty acid synthesis occurs When Glucagon is HIGH --> lipolysis, fatty acid B-oxidation, ketogenesis occur **These never happen at the same time! Lipolysis - ANS Process of releasing free fatty acids from triacylglycerols stored in the adipose IN THE FASTED STATE Steps of lipolysis - ANS 1) Hormone Sensitive Lipase: activated ...

CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete te stbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Latest Exam Update CHEM 234/ochem complete testbank 1-11 Lates...

UNE Biochem 1005 Final Study Set Exam Questions And Answers All Verified Which of the following best describes the structure of heme? -a nicotinamide structure that is readily oxidized -a negatively charged phosphate group -a planar porphyrin ring that binds iron -an n-linked glycosylation A planar porphyrin ring that binds iron Covalent catalysis is used by many enzymes to cleave peptide bonds. Which of the following amino acids would not facilitate this type of catalysis? -val...