0.1 mg of a quaternary structured enzyme (Mr 486 000) with four active sites converts 48 iimol substrate/10 sec. Calculate turnover number (min-1) 

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#Question id: 311

#Section 2: General Biology

Which of the following has no contribution to the stability of tRNA?

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#Question id: 2437

#Section 3: Genetics, Cellular and Molecular Biology

Membrane extension involves

a. bending actin filaments.                   

b. myosin II.

c. the Arp2/3 nucleation of new filaments.

d. actin depolymerization.     

e. actin polymerization.

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#Question id: 16438

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

^{A DNA sample having mass 1 picogram undergoes PCR, the eluted DNA is weighted about 1 microgram, the minimum number of cycles required}

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#Question id: 15625

#Section 4: Fundamentals of Biological Engineering

A stagnant liquid film of 0.4 mm thickness is held between two parallel plates. The top plate is maintained at 400C and the bottom plate is maintained at 300C. If

the thermal conductivity of the liquid is 0.14 W/(m K), then the steady state heat flux ( W/m²) assuming one-dimensional heat transfer is

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#Question id: 1990

#Section 2: General Biology

B cells interacting with helper T cells are stimulated to differentiate when