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What is the numeric relation between pyrimidine and purine bases in the dna molecule? Is that relation valid in rna molecules?
1055What is the rule for the pairing of nitrogen-containing bases in the dna molecule and in the rna? Is this last question appropriate?
1021What are the chemical bonds of the dna molecule that are broken for the replication process to occur?
936Post New Bio Chemistry Questions
The nucleophile in the first stage of the serine protease mechanism is a) H2O b) the carboxyl of Asp 102 c) the hydroxyl of Ser 195 d) the imidazole of His 57
Explain which branch of science deals with the transformation of chemical energy into electrical energy and vice versa?
Aldehydes (ch3cho) and vinyl alcohol (ch2=choh) are?
Explain how can you determine the reaction, taking place at constant pressure delta (h)?
How are free energy, equilibrium and spontaneity related to each other?
I have given the protocol for the cyclodextrin glygosyl transferase assay: One ml of appropriately diluted enzyme sample was incubated at 60 °C for 15 min with 5 ml of 1% (w/v) gelatinized soluble starch in 50 mM, 7.0-pH Tris–HCl buffer. Reaction was terminated by boiling the reaction mixture for 3 min and reaction volume was made to 10 ml with distilled water. Two ml of above reaction mixture was withdrawn and mixed with 3 ml of Tris–HCl buffer, 5 ml of 125 mM Na2CO3, and 0.5 ml of phenolphthalein (25 mg phenolphthalein/100 ml absolute alcohol). Absorbance was measured at 550 nm. The percent decrease of sample was calculated with respect to control containing 5 ml of buffer, 5 ml of sodium carbonate and 0.5 ml of phenolphthalein. where Acontrol = absorbance of control and Atest = absorbance of sample. The amount of β-cyclodextrin (β-CD) produced was estimated from the standard graph of 0–500 μg/ml β-CD concentration against % decrease in absorbance. One unit of CGTase was defined as the amount of enzyme required to produce 1 μm of β-CD/min. Please can you suggest me the formula for the defination given in the last line
What is electrophilic addition reaction?
What is chemical formula for borax?
How is the actual free energy change for a process related to the standard free energy change?
What is Sublimation energy?
What are respectively some remarkable functions of reverse transcriptase?
Are nucleotides formed of only one type of pentose?
Define activation energy?
What is the name of the dna duplication process?
In sickle cell anemia, a hereditary disease, there is substitution of one amino acid by other in one of the four-polypeptide chains of hemoglobin. In this case, are all of the structural levels of the protein modified?
