Sucrose is replace by another sugar in tobacco callus medium without effecting callus growth. This sugar is an osmotic agent and is not taken into the plant cells or metabolized because of its molecular size.

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#Question id: 253

#Section 2: General Biology

Which is not true of the different conformations of DNA?

TLS Online TPP Program

#Question id: 255

#Section 2: General Biology

In proteins, amino acids are linked by peptide bonds; in polynucleotides, nucleotides are linked by

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#Question id: 257

#Section 2: General Biology

ʺFive prime to three primeʺ description of a DNA strand refers to

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#Question id: 258

#Section 2: General Biology

 It is easier to melt DNA richer in AT than GC because

TLS Online TPP Program

#Question id: 259

#Section 2: General Biology

As B-DNA is gradually heated, the absorbance at 260 nm

TLS Online TPP Program

#Question id: 260

#Section 2: General Biology

Which of the following is mismatched?