Tissue Engineering Multiple Choice Questions on “Types of Bioreactors – 1”.
1. In _________ culture, flu flow driven by a magnetic stir bar creates a well-mixed cell suspension.
A. spinner flask
B. agitator
C. magnetic stirrer
D. baffles
Answer: A
Clarification: In spinner flask culture, a liqu stream driven by a magnetic stir bar makes a well-blended cell suspension for dynamic seeding and culture of the platforms that are fixed inse the cup on needles or wires.
2. Who invented the Rotating wall vessel bioreactor?
A. NASA
B. ISRO
C. IISC
D. DRDO
Answer: A
Clarification: The Rotating wall vessel (RWV) was initially developed by NASA and right now has a few subordinates of the first structure that are executed today. There are three regular subordinates called the slow lateral turning vessel (STLV), the high aspect ratio vessel (HARV) and rotating wall perfused vessel (RWPV). The STLV is as of now accessible for business creation.
3. Commercial single-use bioreactors have been available since the end of the ______
A. 1990s
B. 1880s
C. 1900s
D. 1950s
Answer: A
Clarification: A single-use bioreactor or disposable bioreactor is a bioreactor with a dispensable pack rather than a culture vessel. Ordinarily, this alludes to a bioreactor in which the fixing in contact with the phone culture will be plastic, and this coating is encased inse a progressively changeless structure (commonly, either a rocker or a cubo or tube-shaped steel support). Business single-use bioreactors have been accessible since the finish of the 1990s.
4. The rotating wall structures prove reduced shear stress in Rotating wall vessel reactor.
A. TRUE
B. FALSE
Answer: A
Clarification: The rotating wall structures prove reduced shear stress while maximizing mass transfer due to the microgravity environment generated by the rotation of the inner and outer cylinders.
5. A ________________ (PBR) is a bioreactor that utilizes a light source to cultivate phototrophic microorganisms.
A. Photo-bioreactor
B. Capacitor-reactor
C. Transducer-reactor
D. Electrochemical-reactor
Answer: A
Clarification: A photo-bioreactor is a bioreactor that utilizes a light source for developing phototrophic microorganisms. These microorganisms use photosynthesis in order to create biomass from light and CO2 and incorporate green plants, macro & micro algae, cyanobacteria and purple colored microorganisms. Inse the fake condition of a photobioreactor, explicit conditions are deliberately controlled for particular species. Consequently, a photobioreactor permits a lot of higher development rates and virtue levels than anyplace in nature or environments like nature. Theoretically, phototropic biomass could be gotten from supplement rich wastewater and vent gas CO2 in a photobioreactor.
6. The perfusion system offers an alternative to the spinner flask technology as it combats the problems related to the static culture conditions.
A. TRUE
B. FALSE
Answer: A
Clarification: The perfusion system offers an option in contrast to the spinner carafe innovation as it battles the issues entified with the static culture conditions. Commonly, static media does not give eal cell development and along these lines discourages the cell’s capacity to move into the platform. These outcomes in a shell arrangement of cells on the outse of the framework rather than the eal uniform dissemination. Perfusion frameworks always recharge the cells with crisp media with the utilization of chambers, segments, or cartrges that house the platform builds. The steady renewal of media upgrade supplement conveyance to the cells and help the cells to more readily separate.
7. What type of bioreactor is shown in the diagram?
A. Perfusion bioreactor
B. Photo-bioreactor
C. Spinning flask
D. Rotating wall vessel reactor
Answer: A
Clarification: The perfusion system offers an option in contrast to the spinner carafe innovation as it battles the issues entified with the static culture conditions. Commonly, static media does not give eal cell development and along these lines discourages the cell’s capacity to move into the platform. These outcomes in a shell arrangement of cells on the outse of the framework rather than the eal uniform dissemination. Perfusion frameworks always recharge the cells with crisp media with the utilization of chambers, segments, or cartrges that house the platform builds. The steady renewal of media upgrade supplement conveyance to the cells and help the cells to more readily separate.
Engineering,