Methyl iodide (CH31) can be used to modify DNA in solution. It takes the following mechanism for this reaction: Step 1. (slow) CHз снз* + г Step 2. (fast) DNA + CH3* > DNA-CH3* Which of the following is true about this reaction and its mechanism? O a. lodide ion (I ") is an intermediate in the reaction. Ob.CH3* is a catalyst of this reaction. O. The activation energy of Step 1 must be lower than the activation energy of Step 2. d. The overall reaction order of the reaction predicted by this mechanism is 1st order. By increasing temperature, the rate constant of Step 1 will increase but the rate constant of Step 2 will е. decrease.

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Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.