Which the following statements is/are true about the stacking gel?

i. The stacking gel solution contains acrylamide.

ii. It is on the top of the separating gel.

iii. It is used to dilute the protein sample before it enters the main separating gel.

iv. It is into this gel that the wells are formed and the proteins loaded.

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#Question id: 1701

#Section 2: General Biology

Which of the following statements is TRUE of superantigens?

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#Question id: 221

#Section 2: General Biology

Which statement is false about 5,6,7,8-tetrahydrobiopterin?

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#Question id: 27909

#Section 5: Bioprocess Engineering and Process Biotechnology

A 20-1 stirred fermenter containing a Bacillus thuringiensis culture at 30°C is used for production of microbial insecticide, ka is determined using the dynamic method. Air flow is shut off for a few minutes and the dissolved-oxygen level drops; the air supply is then re-connected. When steady state is established, the dissolved-oxygen tension is 78% air saturation. The following results are obtained. Estimate ka.

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#Question id: 12943

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

Choose the correct order for the steps involve in Insitu hybridization.

1. Cell permeaabilisation

2. Detection of hybridised probe radioactive.

3. Wash excess probe from section

4. Cell fixation

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#Question id: 349

#Section 2: General Biology

Increased atmospheric CO2 concentrations might have what effect on seawater?