Homework Answers
a) Alpha helix secondary structure peptide chains coiled into a right handed spiral and these are stabilized by hydrogen bonds between NH and CO group.
b) The quaternary structure of protein is actually the association of many subunits into a closely packed arrangement. and each subunits has its own primary, secondary and tertiary structure. These subunits are held together by hydrogen bonds and vanderwall forces between nonpolar side chaiins.
c) The tertiary structure of a protein consists of polypeptide which is formed of a complex molecular shape. This is caused by interactions like hydrophobic, hydrophillic interactions, ionic and hydrogen bonds and also by disulohide bridges.
d) Covalent crosslinks between polypeptides is an interaction between the molecules by covalent bond as the name suggests. Attachment between groups on two different proteins results in intermolecular crosslinks that stabilize a protein protein interaction through covalent bond (peptide bond).
e) In a beta pleated sheet, the segments of polypeptide chain line up next to each other which helps to form a sheet like structure that are held by hydrogen bonds.
So, the most appropriately matched interaction is (c) that is hydrophobic interaction in tertiary structure.
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17. Which type of interactions (forces) found in proteins is MOST APPROPRIATELY matched with the feature...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester Amide O Disulfide Aldehyde The tertiary structure of a proteins is NOT held together by which type of bond/interaction? Hydrogen bond Electrostatic interactions Hydrophobic interactions Peptide bond Disulfide bonds
I got these multiple questions wrong, can anyone please help me why I got them wrong...
I got these multiple questions wrong, can anyone please help me why I got them wrong =( My answers are in bold, and were marked wrong 1. How do the two reagents used to separate peptide chains that are covalently linked via disulfide bonds function? Mercaptoethanol (oxidizes/reduces) the sulfurs and iodoacetate forms a (covalent/hydrophobic/ionic) interaction with them. 2. Differences at the PrP and the PrPSc proteins occur mainly at which protein structure level(s)? A Primary only B Secondary only C...
11) Which of the following CAN NOT be directly involved in the foiding of a protein...
11) Which of the following CAN NOT be directly involved in the foiding of a protein trom ts secondary tertiary structure? A) Hydrogen bond B) Peptide bond C) Hydrophobic interaction D) Disulfide covalent bond E) lonic interaction 12) Which type of bond links one carbohydrate to the next one in a polysaccharide? A) Glycosidic linkage B) Phosphodiester bond C) Ester linkage D) Peptide bond E) Hydrogen bond
Distinguish between the Different levels of Protein Structure, Induding Primary, Secondary. Tertiary and Quaternary Question Which...
Distinguish between the Different levels of Protein Structure, Induding Primary, Secondary. Tertiary and Quaternary Question Which of the following types of connections maintain the primary structure of a protein? Select all that apply hydrophobic interactions hydrogen bonds peptide bonds disulfide bonds FEEDBACK MORE INSTRUCTIO Activity Details ✓ You have viewed this op Visited Oct 3, 2019 11:12 PM Ota 35N
1. What is the name for the dipeptide shown below 2. Label each as primary, secondary,...
1. What is the name for the dipeptide shown below
2. Label each as primary, secondary, tertiary, or quaternary
3. Indicate whether each is hydrophobic or hydrophilic: Ananine,
Tyr, Lysine, V
CH, O CH OH NH-CH=C-NHCHCOOH The protein folds into a compact structure stabilized by interactions between R groups. the combination of two or more protein molecules to form an active protein pleated sheet the peptide bonds between the amino acids the structural level achieved when hydrogen bonds form between...
The beta-pleated sheet is an example of
1) The beta-pleated sheet is an example of A) primary structure B) secondary structure. tertiary structure. D) quaternary structure. E) none of the above 2) Which type of interaction is not directly involved in maintaining tertiary structure? A) disulfide bridges B) peptide bonds salt bridges D) hydrogen bonding E) hydrophobic interactions 3) How many different tripeptides can be formed from one molecule each of the amino acids tyrosine, valine, and alanine? A) 12 B) 3 24 D) 9 E) 6 4) Which pair of amino acids...
What kinds of interactions are NOT part of tertiary protein structure? 3 . A) salt bridges...
What kinds of interactions are NOT part of tertiary protein structure? 3 . A) salt bridges In a hydrolysis reaction, B) hydrophilic interactions A. an acid reacts with an alcohol. C) disulfide bonds E. an este reacts with NaOH. C. anester reacts with H.O. D) peptide bonds D. an acid neutralizes a base. E) hydrophobic interactions E. water is added to markene. . All amino acids have chiral Carbon atoms except a. Val 6. Lys C. ASP d. Ala e....
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...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and collagen. c)are usually water soluble. d)aggregate in aqueous media. e)are often made of β-pleated sheet and α-helix sections wrapped into compact structures. 2) Select all that apply. The Bohr effect: a)depends on the atomic orbital structure of hydrogen. b)can be summarized as a reduction in the oxygen affinity of hemoglobin with decreasing pH. c)is explained by the protonation of key amino acids, including the...
Question 1 The protein in the diagram is (circle all that apply): Group of answer choices...
Question 1
The protein in the diagram is (circle all that apply):
Group of answer choices
a) a peripheral membrane protein
b) an integral membrane protein
c) a lipid anchored protein
Question 2
The protein shown in the diagram could potentially function as
(circle all that apply):
Group of answer choices
a) a receptor
b) a transmembrane anchor
c) a pore or channel
Question 3
The protein shown in the diagram has which of the following
(choose all that apply)?...
A peptide bond between two amino acids is what type of functional group? Ketone O Ester Amide O Disulfide Aldehyde The tertiary structure of a proteins is NOT held together by which type of bond/interaction? Hydrogen bond Electrostatic interactions Hydrophobic interactions Peptide bond Disulfide bonds
11) Which of the following CAN NOT be directly involved in the foiding of a protein trom ts secondary tertiary structure? A) Hydrogen bond B) Peptide bond C) Hydrophobic interaction D) Disulfide covalent bond E) lonic interaction 12) Which type of bond links one carbohydrate to the next one in a polysaccharide? A) Glycosidic linkage B) Phosphodiester bond C) Ester linkage D) Peptide bond E) Hydrogen bond
Distinguish between the Different levels of Protein Structure, Induding Primary, Secondary. Tertiary and Quaternary Question Which of the following types of connections maintain the primary structure of a protein? Select all that apply hydrophobic interactions hydrogen bonds peptide bonds disulfide bonds FEEDBACK MORE INSTRUCTIO Activity Details ✓ You have viewed this op Visited Oct 3, 2019 11:12 PM Ota 35N
1. What is the name for the dipeptide shown below
2. Label each as primary, secondary, tertiary, or quaternary
3. Indicate whether each is hydrophobic or hydrophilic: Ananine,
Tyr, Lysine, V
CH, O CH OH NH-CH=C-NHCHCOOH The protein folds into a compact structure stabilized by interactions between R groups. the combination of two or more protein molecules to form an active protein pleated sheet the peptide bonds between the amino acids the structural level achieved when hydrogen bonds form between...
What kinds of interactions are NOT part of tertiary protein structure? 3 . A) salt bridges In a hydrolysis reaction, B) hydrophilic interactions A. an acid reacts with an alcohol. C) disulfide bonds E. an este reacts with NaOH. C. anester reacts with H.O. D) peptide bonds D. an acid neutralizes a base. E) hydrophobic interactions E. water is added to markene. . All amino acids have chiral Carbon atoms except a. Val 6. Lys C. ASP d. Ala e....
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...
Question 1
The protein in the diagram is (circle all that apply):
Group of answer choices
a) a peripheral membrane protein
b) an integral membrane protein
c) a lipid anchored protein
Question 2
The protein shown in the diagram could potentially function as
(circle all that apply):
Group of answer choices
a) a receptor
b) a transmembrane anchor
c) a pore or channel
Question 3
The protein shown in the diagram has which of the following
(choose all that apply)?...
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