One of the enzyme that are involve in the ammonium assimilation is Asparagine synthetase (AS), some statements given below about AS such as,

a) This enzyme that catalyzes this reaction, is found in the cytosol of leaves and roots and in nitrogen-fixing nodules

b) High levels of light and carbohydrate inhibit the expression of genes coding for AS and the activity of the enzyme

c) Conditions of ample energy stimulate AS, thus they favor nitrogen assimilation into glutamine and glutamate

d) Energy-limited conditions inhibit GS and GOGAT, stimulate AS, and thus favor nitrogen assimilation into asparagine, a compound that is rich in nitrogen and sufficiently stable for long-distance transport or long term storage

Which of the following statements about AS is correct?

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#Question id: 37877

#Plant Biotechnology

In a turbidostat, fresh medium is added:

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#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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#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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#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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#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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#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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