Biochem exam 2- module 3 quiz with correct answer

Biochem exam 2- module 3 quiz with correct answers Lactose intolerance arises from A. Bacteria in the intestine that produce toxic metabolites B. The inability of intestinal enzymes to cleave the lactose C. A sensitivity to galactose D. A sensitivity to glucose E. An allergic reaction to glucose - Ans:-B. The inability of intestinal enzymes to cleave the lactose In glycoproteins carbohydrate is most often linked to threonine, asparagine or __________. A. Serine B. Lysine ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/17 C. Valine D. Aspartic acid E. Tyrosine - Ans:-A. Serine Under stressful conditions epinephrine is released from the adrenal medulla. The release of epinephrine has which of the following effects on glucose metabolism? A. Glycogenolysis is stimulated B. Glycogenesis is inhibited C. Adenylate cyclase is activated D. Both A and B are correct E. All of the above are correct - Ans:-E. All of the above are correct The preferred energy source of the brain is __________. A. Fructose B. Glucose ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/17 C. Arabinose D. Maltose E. Sucrose - Ans:-B. Glucose Which of the following is not a homoglycan? A. Cellulose B. Glycogen C. Starch D. Heparin E. Amylose - Ans:-D. Heparin Which of the following carbohydrates is a nonreducing sugar? A. Glucose B. Fructose ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 4/17 C. Lactose D. Sucrose E. Ribose - Ans:-D. Sucrose How many stereoisomers are possible for an aldohexose A. 4 B. 8 C. 12 D. 16 E. 32 - Ans:-D. 16 The binding of insulin to receptors on the surface of muscle cells stimulates which of the following processes A. Glycogenolysis B. Glycogenesis ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 5/17 C. Release of ATP D. Formation of cyclic AMP E. Release of glucagon - Ans:-B. Glycogenesis The accumulation of AGEs is linked to which of the following diseases? A. Atherosclerosis B. Arthritis C. Diabetes D. Both A and B are correct E. All of the above are correct - Ans:-E. All of the above are correct Fructose-2,6-bisphosphate A. Is an indicator of high cellular glucose concentration B. Is formed by PFK-1 ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 6/17 C. Activates aldolase D. Both A and B are correct E. All of the above are correct - Ans:-A. Is an indicator of high cellular glucose concentration An enzyme family called the _________ catalyzes the phosphorylation of hexoses in the body. A. Hexolysases B. Phosphorolysases C. Hexokinases D. Glucokinases E. Phosphofructokinases - Ans:-C. Hexokinases Which of the following yields N-acetyl-D-glucosamine on hydrolysis. A. Cellulose B. Heparin ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 7/17 C. Chitin D. Amylopectin E. Amylose - Ans:-C. Chitin The name of this sugar is... (see image attached) A. D-Galactose B. D-Glucose C. L-Glucose D. D-Fructose E. L-Iduronate - Ans:-A. D-Galactose Carbohydrate is thought to enhance the stability of protein molecules by: A. Changing the protein's shape to better resist denatu