FERTILISER TECHNOLOGY QUIZ

What is the effect of excess accumulation of metabolite products (lactate and ammonium) on cells?

They act as growth promoters

Lactate helps in the growth while ammonium inhibits the growth

They act as growth inhibitors

Have no effect on cells

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YOUR ANSWER : ?

Which of the following abnormality, resulted from the inheritance of an unbalanced complement of chromosomes can be diagnosed through karotyping?

Turner's syndrome

Down's syndrome

all of these

Klinefelter's syndrome

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The technique of organ culture may be divided on the basis of employing

both (a) and (b)

semi-solid medium

solid medium

liquid medium

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The major problem associated with the isolation of free cells and cell aggregates from organs is that of

None of these

disintegrating the cells from their supporting matrix

releasing the cells from their supporting matrix

inhibiting the cells from their supporting matrix

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Which of the following is not the explantation technique?

Adherent primary culture

Slide culture

Carrel flask culture

Roller test tube culture

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pH of culture medium is initially controlled by

addition of bases

presence of CO2

none of these

presence of bicarbonate buffer

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An established cell line can be called where it has been subcultured at least

50 times at an interval of 3 days between subcultures

70 times at an interval of 3 days between subcultures

70 times at an interval of 1 day between subcultures

40 times at an interval of 3 days between subcultures

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Toxicity due to accumulation of ammonia can be overcome

by removal of ammonia or ammonium from culture medium

by controlled addition of glutamine at low level

All of these

by substituting glutamine by glutamate

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Disaggregating of cells can be achieved by

All of these

enzymatic digestion

treating with chelating agents

physical disruption

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Accumulation of lactate leads to

no change in pH

increase in pH

no loss of cell viability

reduction in the pH of culture hence loss of cell viability

TRUE ANSWER : ?
YOUR ANSWER : ?