Q. Alkali treatment is not advisable for which of the following?

View solution

Q. The enzyme which specifically catalyzes β (1 → 4) glycosidic linkages of NAM (N-acetyl muramic acid) and NAG (N-acetyl glucosamine) present in bacterial peptidoglycan is _______________

View solution

Q. ___________ is a divalent chelator which can be used to extract enzymes from different sources.

View solution

Q. Which one of the following is not an example for ionic-detergent?

View solution

Q. Pick odd one out.

View solution

Q. The phenomenon wherein the osmotic pressure created due to presence of solutes inside and outside the cells will be equal is referred to as ________

View solution

Q. Which chemical is used for extracting enzymes by osmotic shock treatment?

View solution

Q. Which of the following is not a physical method for extraction of enzymes?

View solution

Q. ____________ is a phenomenon of assuming frequencies more than 20 kHz which is above the human audibility.

View solution

Q. The procedure in which cell lysis occur because of shock waves which are formed due to collapses occurring in buffered solution containing cells is referred to as _______________

View solution

Q. Homogenization cannot be done by using which one of the following?

View solution

Q. Homogenization utilizing ____________ is one where in manual pressure is created for cell lysis.

View solution

Q. A _________ has long teflon tube about 30-40 cm long which is bulged at the end and has an automated machine for providing the pressure.

View solution

Q. Homogenization performed by passing the cells at high pressure through narrow orifice which can also cause cell rupture is referred to as _______________

View solution

Q. The technique in which the cells are subjected to cold temperature of about -15° C to -25° C is referred to as _____________

View solution

Q. ____________ technique is nothing but a cold or psychrophilic shock.

View solution

Q. Freezing technique is not preferred unless otherwise there is a need.

View solution

Q. Mortar and pestle, french press and homogenizer are widely used to lyse the cells by ultrasonication.

View solution

Q. __________ is a method which is highly used for lab scale procedures than large scale work.

View solution

Q. _________________ is the main contaminant present in the resultant free extract from cells.

View solution