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You Are On Multi Choice Question Bank SET 129

6451. A Brookfield viscometer measures viscosity by determining





6452. Which of the following factors will affect the sensitivity of animal cells to shear conditions?





6453. The best described action of Pluronic F68 (non-ionic detergent) in a cell culture medium is that, it





6454. Water is a





6455. Which of the following affect the Kolmogorov eddy size?





6456. A liquid is flowing at 11,400 l.h-1 along a pipeline having a diameter of 4 cm. If the liquid has a density of 1 g.ml-1 and viscosity of 0.001kg.m-1.s-1, then the liquid would be in the





6457. The viscosity of a fluid increases with the length of time that it is being mixed. This fluid would be best described as being





6458. Which of the following can act as a shear protectorant?





6459. The viscosity of a fluid increases with increasing stirrer speed. This fluid would be best described as being





6460. A dilatant fluid is one in which the viscosity





6461. A rheopectic fluid is one in which the viscosity





6462. A fluid in which the viscosity increases with increasing stirrer speed and mixing time can be called as





6463. The medium will have the highest viscosity (considering that the cells do not secrete gums) with the presence of





6464. A Newtonian fluid is one in which the viscosity





6465. Which pattern of mixing is preferred in stirred tank reactors during the culture of aerobic microorganisms?





6466. Animal cell cultures do not have much effect on shear forces because





6467. The viscosity of the culture fluid is classified as both pseudoplastic and thixotropic which indicates that the viscosity





6468. Pluronic F68 is added to cell culture media as





6469. A stirred tank reactor containing a fluid with a density of 2.5 g.ml-1 and viscosity of 0.002 kg m-1s-1 is mixed at 120 rpm. If the fluid is mixed with an impeller having diameter 50 cm, then the Reynolds number of the liquid in the reactor is





6470. If the viscosity of a fluid decreases with the length of time that it is being mixed, then this fluid is





6471. Which of the following describes the importance of the Kolmogorov eddy size in the biotechnology?





6472. A thixotropic fluid is one in which the viscosity





6473. Newtonian fluid is one in which the viscosity





6474. Reynolds number for laminar flow over a plate should be less than





6475. The approach which is commonly used to determine the level of damage to animal cells in a culture medium is to monitor





6476. A Brookfield viscometer cannot determine the shear stress because





6477. Which of the following is correct?





6478. The Komologorov eddy size





6479. Pluronic F68 protects mammalian cells from damage stems as it is a/an





6480. Reynolds number for turbulent flow over a plate should be more than





6481. The viscosity of liquid was classified as both dilatant and rheopectic, which means that the viscosity





6482. Which of the following describes the detrimental effect of bubbles on animal cells?





6483. മനുഷ്യാവകാശ ലംഘനം നടത്തുന്ന രാഷ്ട്രത്തലവൻവൻമാരെ വിചാരണ ചെയ്യുന്നതിനായി സ്ഥാപിതമായ കോടതി? [Manushyaavakaasha lamghanam nadatthunna raashdratthalavanvanmaare vichaarana cheyyunnathinaayi sthaapithamaaya kodathi?]





6484. A fluid in which the viscosity decreases with increasing stirrer speed and mixing time, can be represented as





6485. Filamentous fungal cells are more shear sensitive than bacterial cells because of





6486. The viscosity of water at STP is approximately





6487. Alt+F4 is the short cut key used in windows for :





6488. The tear glands are called





6489. Which of the following statements about Aurangzeb is not correct ?





6490. Indian National Congress was organised in the year ————





6491. Which of the following type of osreads and react in terms of actual time?





6492. Which of the following is considered as a disadvantage to the adsorption method of immobilization?





6493. During the enzymatic reaction of an immobilized enzyme, the rate of substrate transfer is





6494. The immobilized technique involving chemical method is





6495. For a steady state condition, the change of substrate concentration (dCs/dt) is





6496. Damkohler number(NDa) is





6497. For glucose isomerization by immobilized enzyme, the reactor generally used is





6498. If Damkohler number, NDa >>1, the reaction rate is much greater than the mass transfer rate and the overall reaction is controlled by the rate of mass transfer. In this case, the enzyme reaction can be described as (where Csb and Cs are the substrate concentration in bulk of solution and at the immobilized enzyme surface respectively. ks mass transfer coefficient, and a is the surface area of an immobilized enzyme particles)





6499. The most commonly employed cross-linked polymer is the





6500. Which of the following is not the correct answer?





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