At pH 7, how many charged groups are present in the pentapeptide
ADHSK?
a) 1
b) 2
c) 3
d) 4
can you explain why the answer is d) 4 please?
At pH 7, how many charged groups are present in the pentapeptide ADHSK? a) 1 b)...
c) You place your pentapeptide into a buffer with a pH=4. What direction will your pentapeptide move: Circle the correct answer. (2 marks) It will not move. Towards the positive electrode Towards the negative electrode Briefly Explain why: (2 marks) d) You are trying to separate 2 other peptides from your pentapeptide. Peptide 1 is made up of the amino acids: ARKS Peptide 2 is made up of the amino acids: ADES At what pH would you be able to...
#1) For the following pentapeptide (Where pH =1):
a) What would the net charge be for the following pH?
pH 0 =
pH 3 =
pH 5 =
pH 7 =
pH 10 =
pH 13 =
b) Calculate the pl of the pentapeptide. (Cysteine: pK1 = 1.96,
pK2 = 10.128) ( Glutamine: pK1 = 2.17 , pK2 = 9.13) (Arginine: pK1
= 2.17. pK2 = 9.04) (Leucine: pK1 = 2.36 , pK2 = 9.60)
c) If you were to...
What is the overall charge for this pentapeptide Leu-Met-Lys-Arg at pH 7? will it bind to an anion exchange column at this pH? please explain the process thank you
What is the net charge of the pentapeptide Ala-Cys-Ser-Glu-Asn at pH 7? Answer is -3, but how??????
2: Phosphate groups on the backbone of DNA are negatively charged at neutral pH. This suggests that DNA-binding proteins are often enriched in which amino acid? Explain in paragraph. A. E B. G C. K D. L E. W
2. Phosphate groups on the backbone of DNA are negatively charged at neutral pH. This suggests that DNA-binding proteins are often enriched in which amino acid? A. E B. G C. K D. L E. W 3. You are studying a particular reaction under conditions in which the AG = 12 kJ/mol. Which of the following statements best describes the equilibrium constant (K.) of this reaction? A. Keq < 0 B. Keq = 0 C. 0 < Keq <1 D....
8. How many stereocenters are present in the following molecule? OH b. 2 d. 7 a. 1 C. 9. Which one of the following pairs are contributing resonance structures? OH H3C CH3 H3C CH2 OH H3C H3C NH3 0 H3C H3C NH2 b. 2 c. 3 d. 2 and 3
explain please
en KIAg(CN)21 dissolves in water how many different ions will be present in solution? A. 1 ion INDIVIDUAL FEEDBACK REPORT B 2 ions C. 3 ions D. 4 ions 43. What is the coordination number of cobalt in the complex [Co(en)(NH2)2Br21Ci? A. 2 B. 4 C. 5 Dr 6 E. 7
1. A pentapeptide with antimicrobial properties is isolated from an annelid. Sequencing of this peptide revealed the amino acid sequence: GYARC . What is the net charge of the peptide at the following pH values? Explain your answers using the chemical structure of the peptide. pH= 2 b) pH 7.5 c) pH 10.5
1. How many different erent groups comprise the common amino acids (ie those incorporated into most groups comprise the com proteins)? A 2 B 10 C. 20 D 25 2. When two separate cysteine A. a sulfu r ate cysteine SH groups form a bridge with each other, SS, the bridge is called SH B. a disulfide link. C. a disulfur bridge. D. a sulfate link The pH at which a witterion has exactly a zero charge is called the...