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Question 2 Which group of molecules in a peptide backbone chain forms phi angles with a...
The Ramachandran plot represents the phi/psi dihedral angles at each backbone peptide bond in a protein....
The Ramachandran plot represents the phi/psi dihedral angles at each backbone peptide bond in a protein. Which one of the following statements best represents the changes observed in a dihedral angle in the transition of a prion protein from alpha-helical to beta sheet? A. the Ramachandran plot would be identical since the amino acid sequence remains the same. B. The phi/psi angles would change from about -60 and -50 to -140 and 135 respectively. c. The phi/psi angles would change...
Which of the following is correct concerning a peptide backbone? Choose one: O A. The peptide...
Which of the following is correct concerning a peptide backbone? Choose one: O A. The peptide bond allows for free rotation due to its single bond character. OB. A Ramachandran plot shows the allowable and V angles for a peptide. O C. The torsional angle between the Ca and the Rgroup is called “ (phi). O D. The torsional angle between the amide nitrogen and the Ca is called (psi).
Which of the following statements are (is) true for the phi φ and psi Ψ angles...
Which of the following statements are (is) true for the phi φ and psi Ψ angles of a peptide? A. Angles have conformational constraints. B. Angles can assume any value in a peptide. C. The angles always have a value of 180°. D. The value of the angle φ is greater than the angle Ψ. E. All of the above. F. A and D. G. A, C, D.
Question 5. Which of the following pairs of bonds within a peptide backbone show free rotation...
Question 5. Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds? A) Ca-C and N-C B) C-O and N-C C) C-O and N-Ca D) N-C and Ca-C E) N-Ca and N-C Question 6. In the diagram below, the plane drawn behind the peptide bond indicates the: A) absence of rotation around the C-N bond because of its partial double-bond character. B) plane of rotation around the C-N bond. region of steric hindrance...
1. Given the following peptide, which of the following statements is true? Question options: a) The...
1. Given the following peptide, which of the following
statements is true?
Question options:
a) The N-terminal residue is leucine.
b)This peptide contains 4 amino acid residues.
c) The peptide contains a total of 6 ionizable groups.
d) The net charge of this peptide at pH 7 is +1 Locate any
peptide bond along the backbone of the given peptide.
e) The bond between the C (of the C=O) and the N (of the N-H) of
a peptide bond has...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysi...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysine B) It is polar C) Forms disulfide bond/ cysteine D) Forms hydrogen bonds with neighbors/ alanine serine 27. All amino acids found in proteins are L-amino acids EXCEPT the achiral. A) glutamate B) Lysine C) glyeine D) Alamine 28. The plH at which the positive and negative charges of an amino acid balance each ofher is called the A) isotonic...
Lipids are a broad group of diverse molecules that have which of the following feature(s) a)...
Lipids are a broad group of diverse molecules that have which of the following feature(s) a) hydrophobic chains or rings b) a polar head c) a glycerol backbone d) a and b e) a, b, c
For the following molecules, write the Lewis structure, and indicate bond angles around carbon for a...
For the following molecules, write the Lewis structure, and indicate bond angles around carbon for a c, and around oxygen for d. a ethane, CH,CH, b. ethene (ethylene), CH,CH, c. ethyne (acetylene), HOCH d. hydrogen peroxide, H,0, or HOOH The skeleton structures for the acetate ion are shown below. Complete the Lewis struc- tures for the two resonance forms, and indicate the bond angles around carbon A and carbon B in the acetate ion. Н Св O H CA 0...
C,D, and E i need help with. 17. The following peptide forms part of Human Hemoglobin...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
Which of the following is correct concerning a peptide backbone? Choose one: O A. The peptide bond allows for free rotation due to its single bond character. OB. A Ramachandran plot shows the allowable and V angles for a peptide. O C. The torsional angle between the Ca and the Rgroup is called “ (phi). O D. The torsional angle between the amide nitrogen and the Ca is called (psi).
Question 5. Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds? A) Ca-C and N-C B) C-O and N-C C) C-O and N-Ca D) N-C and Ca-C E) N-Ca and N-C Question 6. In the diagram below, the plane drawn behind the peptide bond indicates the: A) absence of rotation around the C-N bond because of its partial double-bond character. B) plane of rotation around the C-N bond. region of steric hindrance...
1. Given the following peptide, which of the following
statements is true?
Question options:
a) The N-terminal residue is leucine.
b)This peptide contains 4 amino acid residues.
c) The peptide contains a total of 6 ionizable groups.
d) The net charge of this peptide at pH 7 is +1 Locate any
peptide bond along the backbone of the given peptide.
e) The bond between the C (of the C=O) and the N (of the N-H) of
a peptide bond has...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysine B) It is polar C) Forms disulfide bond/ cysteine D) Forms hydrogen bonds with neighbors/ alanine serine 27. All amino acids found in proteins are L-amino acids EXCEPT the achiral. A) glutamate B) Lysine C) glyeine D) Alamine 28. The plH at which the positive and negative charges of an amino acid balance each ofher is called the A) isotonic...
For the following molecules, write the Lewis structure, and indicate bond angles around carbon for a c, and around oxygen for d. a ethane, CH,CH, b. ethene (ethylene), CH,CH, c. ethyne (acetylene), HOCH d. hydrogen peroxide, H,0, or HOOH The skeleton structures for the acetate ion are shown below. Complete the Lewis struc- tures for the two resonance forms, and indicate the bond angles around carbon A and carbon B in the acetate ion. Н Св O H CA 0...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
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