Subunits present in hemoglobin are [AIIMS 2003]
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Purines have nitrogen atoms at _____ positions.
Assertion :In a DNA molecule, A-T rich parts melt before G-C rich parts. Reason :In between A and T there are three H-bond, whereas in between G and C there are two H-bonds.
A 68nm length double stranded DNA has 24 adenine nucleotices. What must be the number of guanine nucleotides?
Which of the following secondary metabolites are used as drugs ?
In DNA, guanine pairs with
Which one of the given graphs shows the effect of temperature on the velocity of a typical enzymatic reaction ?
The two long polynucleotide chains of DNA are held together by
DNA is packaged with non-histone protein to form nucleoid.