Ls4203_midsem_2017 please answer only question no.5. (1+1+1+1+1= 5 marks) AMP re
ID: 196723 • Letter: L
Question
Ls4203_midsem_2017
please answer only question no.5. (1+1+1+1+1= 5 marks)
AMP regulate the activity of Glycogen phosphorylase? 1.5+2+15-5 Pyruvate is one of the most important intermediate in the metabolism: Explain 4 fates of pyruvate in the carbohydrate metabolism. What is glyoxalate cycle? Explain why it is important for plant? Why animal does not have Glyoxalate cycle? How Dark phase of photosynthesis is regulated by light? Explain hs is photorespiration? Explain CAM pathway of Photosynthesis. 2+1-2 What is Glycogenin? What is Thermogenin? What is brown fac? Why it is fat? What is the action of oligomycin?Explanation / Answer
5. Glycogenin: Glycogenin is a substrate involved in converting glucose to glycogen. It acts as a primer, by polymerizing the first few glucose molecules, after which other enzymes take over.
Thermogenin: Thermogenin is an uncoupling protein found in the mitochondria of brown adipose tissue. It is used to generate heat by non-shivering thermogenesis
Brown fat: Brown-fat cells burn energy and produce heat. It actually burns calories to produce heat. It generates three hundred times more heat than any other tissue in the body.
Why called brown fat? Brown fat is so-called because it contains a large number of mitochondria, which is certainly greater than its white fat counterpart. The reason for the excess in mitochondria is to participate in thermogenesis. It is also called thermogenic adipose tissue.
Action of Oligomycin: Oligomycin increases the conversion of glucose to CO2 in brown fat cells. While in white fat cells, oligomycin diminished the conversion of glucose to CO2. Oligomycin blocked the lipolytic response of both brown and white fat cells if the antibiotic was added prior to the lipolytic agents.
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