TLS Online TPP Program

#Question id: 10356


Why the GS  and GOGAT is activated in light and while the AS is inhibited?

#Botany
  1. In presence of light and carbohydrate, GS and GOGAT activate so that plant can grow while AS is inhibited so that amino group will not be transported
  2. GS  and GOGAT is activated because they favor nitrogen assimilation into glutamine and glutamate, compounds that are rich in nitrogen and sufficiently stable for long-distance transport or longterm storage
  3. In presence of light and carbohydrate, GS and GOGAT activate so that amino group will be transported while AS is inhibited so that plant can’t grow
  4. AS is inhibited because it favor nitrogen assimilation into asparagine, a compound that is rich in carbon and participate in the synthesis of new plant materials 
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TLS Online TPP Program

#Question id: 37877

#Plant Biotechnology

In a turbidostat, fresh medium is added:

TLS Online TPP Program

#Question id: 37878

#Plant Biotechnology

Assertion (A): In a closed continuous culture system, the total cell biomass continues to increase over time. 
Reason (R): In this system, cells are separated from the removed spent medium and recycled back into the culture vessel

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TLS Online TPP Program

#Question id: 37879

#Plant Biotechnology

Assertion (A): Open continuous cultures are capable of maintaining cells in a steady state of submaximal growth indefinitely.
Reason (R): In open continuous cultures, only the spent medium is removed while the cells are retained within the bioreactor.

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TLS Online TPP Program

#Question id: 37880

#Plant Biotechnology

Assertion (A): To maintain a steady state in an open continuous culture, the volume of fresh medium added must be equal to the volume of culture removed. 
Reason (R): Without balancing the input and output volumes, the culture volume would change, disrupting the steady state and nutrient availability.

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TLS Online TPP Program

#Question id: 37881

#Plant Biotechnology

Assertion (A): Continuous culture systems are strictly classified as closed systems where no material leaves the vessel. 
Reason (R): Continuous cultures require the regular replacement of a portion of the spent medium with fresh medium.

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TLS Online TPP Program

#Question id: 37882

#Plant Biotechnology

Statement I: Plant cells can be immobilized by encapsulating them in materials such as agarose or calcium alginate gels. 
Statement II: Immobilized cells are usually packed in a column where liquid medium is kept stagnant to prevent cell detachment.

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