Other Chemistry Answers

Draw the structure of the tripeptide, which is composed of Tyr+Arg+Ala and answer additional questions

1.1 specify the value of the isoelectric point

1.2 select the indicator and determine the pH of the aqueous solution by indicator's color 1.3 specify the hydrophilic-hydrophobic balance

1.4 draw the structures of the tripeptide that correspond to the pH values 0, pl, 7, 14. Specify the charge of the tripeptide in each pH.

2 Construct the Fischer's formula for the D-gulose [2(D),3(D),4(L),5(D),6- pentahydroxyhexan-1-al] and draw all the tautomers: oxo, and pyranoses, furanoses.

3 Give the formula of the nucleic base thymine, nucleoside thymidine, nucleotide thymidine -3-phosphate

1. Draw the structure of the triреptide, which is composed of Thr+His+Pro and answer additional questions

1.1 specify the value of the isoelectric point

1.2 select the indicator and determine the plH of the aqueous solution by indicator's color 1.3 specify the hydrophilie-hydrophobic balance

1.4 draw the structures of the tripeptide that corespond to the pH values 0, pl, 7, 14. Specify the charge of the triреptide in each pH

2 Construct the Fischer's formula for the D-ribose [2(D),3(D), 4(D),5- tetrahydroxy pentane-1-al] and draw all the tautomers: охо, and рyranoses, furanoses.

3 Give the formula of the nucleic base guanine, deохуписleoside deoxyguanosine, nucleotide deoxyguanosine-5-phosphate

How much phosphatidylethanolamine (in mg) would you have to weigh out to prepare 20 ml of a chloroform-methanol solution containing 6 μg phosphatidylethanolamine per μl?

What is the pH of a 0.50 M solution of MOPS (3-[N-morpholino]propanesulfonic acid) in the acid form (pKa = 7.2)?

A buffer solution contains 0.45 M NaHCO3 and 0.25 M Na2CO3. If 0.046 moles of sodium hydroxidenare added to 225 ml of this buffer, what is the pH of the resulting solution? (Assume that the volume does not change upon adding potassium hydroxide.)

Calculate the pH of a buffer solution prepared by adding 250 ml of a 0.50 M lactic acid solution to

150 ml of a 0.50 M sodium hydroxide solution?

How would you prepare 750 ml of a 0.5 mol.dm-3 oxalate buffer solution at pH 3.7 using sodiumoxalate salt (Na2C2O4) and a 3 mol.dm-3 oxalic acid (C2HO4) solution? (Ka = 6.4 x 10-5)

What will the pH of the resulting solution be if 100 cm3 of a 0.3 mol.dm-3 NaOH solution is added to 200 cm3 of the above prepared oxalate buffer?