Which statement is false in regard to beta-sheet structures? A) Beta-sheet structures are indicative of a...
Which statement is false in regard to beta-sheet structures? A) Beta-sheet structures are indicative of a protein structure where the beta strands are all in an anti-parallel orientation. B) Beta-sheet structures are held together by H-bonds between the C=O of one peptide bond and the N-H of another peptide bond. C)These structures can be parallel or anti-parallel in orientation D) Beta-structures are found in many but not all protein structures
Homework Answers
A) Beta-sheet structures are indicative of a protein structure where the beta strands are all in an anti-parallel orientation.
Beta sheet structures are indicative of a protein structure where the beta strands are all in an parallel.
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Which statement is false in regard to beta-sheet structures? A)
Beta-sheet structures are indicative of a...
QUESTION 2 Select the CORRECT statements (chose all that are correct). Secondary protein structures are held...
QUESTION 2 Select the CORRECT statements (chose all that are correct). Secondary protein structures are held together by disulphide bridges/bonds. Alpha helices and beta sheets are common secondary protein structures. Tertiary protein structures are held together by covalent bonds only. Secondary protein structures are held together by hydrogen bonds only. All proteins have a quaternary protein structure. Amino acids linked with a peptide bond make up the primary protein structure.
Which of the following statements Explain primary, secondary, tirtially and quaternary structures of protien Questions for...
Which of the following statements Explain primary,
secondary, tirtially and quaternary structures of protien
Questions for G2: 1) Would you expect to find valine and leucine on the outside or the inside of the tertiary structure? Why? pts) 2) State whether the following statement describe primary, secondary, tertiary, or quaternary protein (15 pts) structure A. Adjacent chains of polypeptides are held together by hydrogen bonds between the O of the carbonyl group of one chain and the H of an...
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...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine aspartate Which amino acid's R group has a pKa nearest physiological pH? Which amino acid would you most expect to find in the centre of a folded globular protein? Which amino amino acid can be phosphorylated? The overall charge on the peptide (G-R-A-M-P-S) at pH 12.5 is: -1 -0.5 -1.5 +0.5 1 15. What term best describes the protein secondary structure element drawn below:...
True or false? True False Phenylalanine's side chain is more polar than tryptophan's or tyrosine's side chains....
True or false? True False Phenylalanine's side chain is more polar than tryptophan's or tyrosine's side chains. True False Almost all peptide bonds in proteins are in the trans configuration. True False In folded globular proteins, the side chains of hydrophobic amino acids are mostly buried in the interior of the protein. True False The peptides I-A-G-Y-L-S and S-L-Y-G-A-I are different molecules with different properties. True False Poly lysine will tend to form an alpha helix in solution at pH 6.8. True False Amyloidoses such as...
PayЕ 30-Which structure among the following represents an amide (protein) bond? A) —N=C=0 C-NH- -C-NH- C-0-...
PayЕ 30-Which structure among the following represents an amide (protein) bond? A) —N=C=0 C-NH- -C-NH- C-0- 31-Which type of forces form the primary structure of a protein? 32-The two protein chains in insulin are held together by 33-Keratin, the protein of hair and skin, has extensive sections with which secondary structure? 34-The beta-pleated sheet is an example of 35-The type of bond that is most important in maintaining secondary structure of a protein is 36-All of the following are examples...
Determine whether the sentences are true or false 27-( ) The only acidic amino acid is...
Determine whether the sentences are true or false 27-( ) The only acidic amino acid is aspartic acid. 36-( ) The quaternary structure is physically very strong because many polypeptides are clustered together. 37-( ) The amino acid sequence consisting of I-V-V-F-V is judged to form a β strand. 38-( ) The amino acid sequence consisting of A-E-A-E-L-A-L-E is judged to form an α-helix. 39-( ) If the molecular weight of glycine is 75, the molecular weight of the peptide...
1.Under anaerobic conditions pyruvate is converted to acetly CoA True or false? 2.Expect for glycine, all...
1.Under anaerobic conditions pyruvate is converted to acetly CoA True or false? 2.Expect for glycine, all of the amino acids in a protein have the D configuration. True or false? 3.The side chain of the amino acid lysine is -CH2-CH2-CH2-CH2-NH2. TO which category does this amino acid belong? 4. which statment below describes the primary structure of a protien? - peptide bonds join amino acids in a polypeptide chain? - two polypeptide chains are held together by hydrogen bonds and...
Which are true, and which are false? a) Genetic material must encode phenotypes b) Genetic material...
Which are true, and which are false? a) Genetic material must encode phenotypes b) Genetic material must contain nitrogen, but not sulfur c) The structure of DNA is described as a double helix with two parallel strands. d) Covalent (phosphodiester) bonds connect nucleotides in a strand; noncovalent (hydrogen) bonds hold strands into a double-stranded structure e) All organisms contain DNA that is roughly 25% A, 25% T, 25% G, and 25% C. f) A-, B-, and Z-form DNA are all...
38,39 38. Which of the lanes in the gel below would represent an "uninduced" sample? M,...
38,39
38. Which of the lanes in the gel below would represent an "uninduced" sample? M, 1 23 456 78 A) 1 B) C)3 D) 4 E) 5 2 39. lodoacetamides, maleimides, benzyl halides, and bromomethyl ketones can all be used to modify the residues group on A) amino; basic B) phenyl; Tyr and Trp C) carboxyl; acidic D) sulfhydryl; Cys E) hydroxyl; Ser and Tyr 40. Which statement about intrinsically disordered proteins is TRUE? A) B) C) They contain...
QUESTION 2 Select the CORRECT statements (chose all that are correct). Secondary protein structures are held together by disulphide bridges/bonds. Alpha helices and beta sheets are common secondary protein structures. Tertiary protein structures are held together by covalent bonds only. Secondary protein structures are held together by hydrogen bonds only. All proteins have a quaternary protein structure. Amino acids linked with a peptide bond make up the primary protein structure.
Which of the following statements Explain primary,
secondary, tirtially and quaternary structures of protien
Questions for G2: 1) Would you expect to find valine and leucine on the outside or the inside of the tertiary structure? Why? pts) 2) State whether the following statement describe primary, secondary, tertiary, or quaternary protein (15 pts) structure A. Adjacent chains of polypeptides are held together by hydrogen bonds between the O of the carbonyl group of one chain and the H of an...
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...
Consider the following amino acids for questions 11-13. Choose the best answers. cysteine serine lysine phenylalanine aspartate Which amino acid's R group has a pKa nearest physiological pH? Which amino acid would you most expect to find in the centre of a folded globular protein? Which amino amino acid can be phosphorylated? The overall charge on the peptide (G-R-A-M-P-S) at pH 12.5 is: -1 -0.5 -1.5 +0.5 1 15. What term best describes the protein secondary structure element drawn below:...
PayЕ 30-Which structure among the following represents an amide (protein) bond? A) —N=C=0 C-NH- -C-NH- C-0- 31-Which type of forces form the primary structure of a protein? 32-The two protein chains in insulin are held together by 33-Keratin, the protein of hair and skin, has extensive sections with which secondary structure? 34-The beta-pleated sheet is an example of 35-The type of bond that is most important in maintaining secondary structure of a protein is 36-All of the following are examples...
38,39
38. Which of the lanes in the gel below would represent an "uninduced" sample? M, 1 23 456 78 A) 1 B) C)3 D) 4 E) 5 2 39. lodoacetamides, maleimides, benzyl halides, and bromomethyl ketones can all be used to modify the residues group on A) amino; basic B) phenyl; Tyr and Trp C) carboxyl; acidic D) sulfhydryl; Cys E) hydroxyl; Ser and Tyr 40. Which statement about intrinsically disordered proteins is TRUE? A) B) C) They contain...
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