Tropical Area Tropical region is the part of earth surrounding the equator. Exactly it cover the region between tropic of cancer and tropic of capricorn. Tropic of Cancer: 23.43º towards Northern Hemisphere Tropic of Capricorn: 23.43° towards Southern Hemisphere Tropical regions receive maximum sunlight over the year and the vegetation there are the most productive vegetation on earth. Hence, tropical […]
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Enzyme Regulation Mechanisms: The Molecular Methods to Regulate Enzymes and Enzymatic Acitvity
What are enzymes? Ø All living organisms in the world should possess TWO fundamental properties Ø They are: (1). Must be able to self-replicate (2). Must be able to catalyze chemical reactions efficiently and selectively Ø Enzymes are the molecules which enables each living entity to do these two fundamental activities Ø Enzymes are […]
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Nucleotide Excision Repair (NER) in Prokaryotes (DNA Repair Mechanism: Part IV)
What is Nucleotide Excision Repair (NER)? As the name suggests it is a type of DNA repair mechanism. In nucleotide excision repair or NER, the damaged base along with a short stretch of healthy strand is removed and later the gap is refilled with correct nucleotides. Thus the NER pathway operates by ‘cut and patch’ mechanism. Even though nucleotide excision […]
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CSIR NET Life Sciences Question paper June 2015 with Answer Key and Explanations Part II (Part B Question 41 – 55)
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH (CSIR) & UGC (Original Question Paper) PART: B (Questions 41 – 55) 41. Which of the following statements about LEAFY (LFY), a regulatory gene in Arabidopsis thaliana, is correct? a. LEAFY (LFY) is involved in floral meristem identity b. LEAFY (LFY) is involved in leaf expansion c. LEAFY (LFY) is involved in […]
Continue ReadingCSIR NET Life Sciences Question Paper: June 2015: with Answer Key and Explanations: Part I
CSIR/JRF/NET: Life Sciences, June 2015 (I) COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH (CSIR) & UGC PART: B (Questions 21 – 40) (21). A 1% (w/v) solution of a sugar polymer is digested by an enzyme (20ug, MW = 200,000). The rate of monomer sugar (MW = 400) liberated was determined to have a maximal initial velocity of 100 mg formed/ […]
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