In industries titanium is hardened through diffusion of carbon. The concentration of carbon at 1mm into the surface of the titanium slab is 0.25kg/m³ and at 3mm the concentration is 0.68kg/m³. The rate at which the carbon is entering into its surface is 1.27*10-9kg/m².s. calculate the value of diffusion coefficient of carbon.

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#Question id: 5256

#Section 3: Genetics, Cellular and Molecular Biology

If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

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#Question id: 12940

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

 Choose the correct order for the steps involve in Protein engineering.

1. Protein modelling

2. Protein crystallography

3. Site-directed mutations

4. Comparison with entries in databases of known proteins.

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#Question id: 597

#Section 2: General Biology

The Km values for enzyme reactions such as A + B → C + D

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#Question id: 15942

#Section 1: Engineering Mathematics

If A and B are square matrices of size n x n, then which of the following is not true? 

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#Question id: 2141

#Section 2: General Biology

Facilitated diffusion through a biological membrane is: