Biosynthesis of tyrosine is detailed below: Shikimic acid – A → shikimic acid-5-phosphate -B → C → chorismic acid → prephenic acid → D → transaminase → tyrosine. Identify A, […]
Tag: CSIR NET Life Science PYQ on metabolism
CSIR NET Life Science PYQ on metabolism
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CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Melittin Activation of Phospholipase in Bee Venom: Targeting Phospholipase A2 to Generate Arachidonic Acid
Sting of a bee causes pain, redness and swelling. Melittin is a major peptide in bee venom. Melittin is a membrane binding peptide that is involved in activating phospholipases in […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Major Regulatory Step in Cholesterol Biosynthesis: The Role of HMG-CoA Reductase
Major regulatory step in cholesterol biosynthesis is (1) HMG coA reductase (2) HMG CoA synthase (3) Thiokinase (4) Mevalonate kinase Cholesterol is an essential lipid molecule involved in maintaining cell […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Number of β-Oxidation Cycles Required to Completely Hydrolyze Arachidonic Acid into Acetyl CoA
Number of cycles required to completely hydrolyze Arachidonic acid into acetyl CoA is (1) 9 (2) 8 (3) 10 (4) 11 Arachidonic acid is a polyunsaturated fatty acid with 20 […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Common Metabolite from the Pentose Phosphate Pathway in Nucleotide Biosynthesis: Role of PRPP
Common metabolites in nucleotide biosynthesis derived from pentose phosphate pathway is (1) PRPP (2) Glycerladehyde-3-P (3) DHAP (4) Sedoheptulose 7-P The pentose phosphate pathway (PPP) is a crucial metabolic route […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Why Eukaryotes Have a Single Multifunctional Fatty Acid Synthase Complex While Prokaryotes Use Multiple Enzymes
In eukaryotes there is single multifunctional fatty acyl synthase complex sufficient for complete fatty acid synthesis where as in prokaryotes there seven different enzymes involved for the same task. The […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Metabolic Functions of Red Blood Cells: Clarifying Common Misconceptions
Some metabolic aspects of the Red Blood Cell (RBC) are proposed in the following statements: A. Synthesis of fatty acids does not occur in the RBC B. The pentose phosphate […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Key Facts About β-Oxidation of Fatty Acids: Mechanism, Location, and Regulation
Which is true for β-oxidation of fatty acids (1) Formation of Malonyl CoA is committed and regulatory step (2) Formation of acetoacetyl ACP occurs in mitochondria (3) Cytosolic acyl CoA […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
Understanding Cholesterol Metabolism: Key Facts and Common Misconceptions
Which of the following ii NOT true for cholesterol metabolism? (1) HMG-CoA reductase is the key regulator of cholesterol biosynthesis. (2) Biosynthesis takes place in the cytoplasm. (3) Reduction reactions […]
CSIR NET Life Science Previous Year Questions and Solution on Biochemistry
The Purpose of Excess Oxygen Consumption After Vigorous Exercise (EPOC)
Excess oxygen consumed after a vigorous exercise is (1) to pump out lactic acid from muscle (2) to increase the concentration of lactic acid in muscle (3) to reduce dissolved […]
