The enymatic rate constant (kcat/Km) of orotidine 5ʹ-phosphate decarboxylase is 6 x 10⁷ M^-1s^-1 and the nonenzymatic rate constant (kn) is 3 x 10^-16 s^-1.  What is the value of the enzymeʹs catalytic proficiency?

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#Question id: 27477

#Unit 13. Methods in Biology

The length of a double helical DNA molecule is 13.6 km. If the DNA double helix weighs 1 ×10−18 g per 1000 nucleotide pairs and rise per base pair is 3.4 Å, then weight of the double helical DNA molecule (in nanogram) will be ______ (in integer).

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#Question id: 27004

#Unit 10. Ecological Principles

In Lotka and Voltera’s two species competition model: Where N represents population size, r growth rate and K maximum carrying capacity for species 1 and 2. The interspecific competition coefficient α12 <1will mean:

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#Question id: 10705

#Unit 10. Ecological Principles

Which of the following statements is TRUE for an ecotone?

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#Question id: 10628

#Unit 10. Ecological Principles

Which of following statement is correct for above population?

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#Question id: 1390

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements describes the events of apoptosis?