Assertion (A): Plant cell and tissue cultures can be maintained indefinitely.

Reason (R): Serial subculturing is performed to transfer tissues to fresh medium to counter nutrient depletion and medium drying.

Select the correct option:

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#Question id: 119

#Zoology

Tay-Sachs disease is the result of a genetic defect in the metabolism of:

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#Question id: 121

#Zoology

Which of the following molecule is derived from sterols.

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#Question id: 124

#Zoology

What is the role of cholesterol in animal cell membranes?

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#Question id: 125

#Zoology

Regions on cell membranes called lipid rafts form because

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#Question id: 126

#Zoology

Which statement is false about lipid rafts?

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#Question id: 127

#Zoology

Which two organelles are responsible for producing phospholipids and sphingolipids?