Most gram-negative bacteria are not as susceptible to penicillin as gram-positive bacteria are because

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#Question id: 249

#Section 2: General Biology

According to Chargaffʹs observations of nucleotide composition of DNA samples, which of the following options are correct

A) % of (G + C) + % of (A + T) = 100%.

B) A = T.

C) G = C.

D) %A + %C + %T = 100%.

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#Question id: 253

#Section 2: General Biology

Which is not true of the different conformations of DNA?

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#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

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#Question id: 259

#Section 2: General Biology

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