An αlpha- helix is formed by hydrogen bonds between: a. nonpolar and polar R groups. b....
An αlpha- helix is formed by hydrogen bonds between:
a. nonpolar and polar R groups.
b. positively charged and negatively charged R groups.
c. the carbonyl oxygen and the amide nitrogen of neighboring amino acids.
d. the carbonyl oxygen and the amide nitrogen of every fourth amino acid.
Homework Answers
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An αlpha- helix is formed by hydrogen bonds between:
a. nonpolar and polar R groups.
b....
Which of the following is NOT an example of tertiary structure? hydrogen bonds forming between the...
Which of the following is NOT an example of tertiary structure? hydrogen bonds forming between the Hof a polar Rgroup and the Oor N of another polar amino acid triple helix hydrophobic interactions between two amino acids with nonpolar R groups salt bridges between ionized groups of polar basic and polar acidic amino acids
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in...
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one amino...
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in...
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: O hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one...
Question 2 (1 point) Amino acids can be classified as A. Hydrophobic amino acids with nonpolar...
Question 2 (1 point) Amino acids can be classified as A. Hydrophobic amino acids with nonpolar R groups B. Polar amino acids with neutral R groups but the charge is not evenly distributed C. Positively charged amino acids with R groups that have positive charge at physiological pH. D. Negatively charged amino acids with R groups that have a negative charge at physiological pH. How would the amino acid alanine be classified? Think through your reasoning. L-Alanine H2N-CHC-OH CH3
Since the secondary structure of a protein results from hydrogen bonding between components shared by all amino acids
Distinguish between the different levels of protein structure, including primary, secondary, tertiary, and quaternary Question Is the following statement true? If not, explain why not: Since the secondary structure of a protein results from hydrogen bonding between components shared by all amino acids (a hydrogen on an amide N on one amino acid interacts with an oxygen on the carbonyl of another amino acid), the secondary structure does not depend on the specific amino acid groups (the R-groups) in the amino acid chain. Select...
There are four amino acid residues between each turn of an alpha helix, because O hydrogen...
There are four amino acid residues between each turn of an alpha helix, because O hydrogen bonding between the carbonyl and amine groups is more stable at this distance. O amino acid residues need a certain amount of distance between then during the turn. O the polar amino acids are more attractive to the peptide bond at this distance. O None of the choices are correct.
Understand alpha helices and beta pleated sheets Question Every helical turn in an a-helix has 3.6 amino acid residues....
Understand alpha helices and beta pleated sheets Question Every helical turn in an a-helix has 3.6 amino acid residues. Then, hydrogen bonds are formed between the oxygen atom in amino acid along the the carbonyl group in the first amino acid and the hydrogen atom in the amine group of the chain. Select the correct answer below: third second fourth fifth FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
PDX-1 must bind to DNA in order to function. A particular arrangement of amino acids with...
PDX-1 must bind to DNA in order to function. A particular arrangement of amino acids with polar r-groups determines the sequence of nitrogenous bases the PDX-1 can bind to via hydrogen bonds; however, a separate binding pocket of the protein helps it attach to the DNA backbone. What would you predict the characteristics of those amino acids are? Positively Charged Polar Uncharged Negatively Charged Nonpolar
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with b...
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with bulky side chains while the B-pleated sheets cannot? Select the correct answer below: O The R groups in the a-helix stabilize the structure, while they interfere with the hydrogen bonds in a B-pleated sheet. The R groups are contained inside the a-helix structure, while they interfere with the hydrogen bonds in a B- pleated sheet. O The R groups lie...
a) which amino acid tested is most polar? b) look up the structure of the amino...
a) which amino acid tested is most polar?
b) look up the structure of the amino acids. explain why it
makes sense that the amino acid you listed is more polar than the
others?
c) what amino acids are in the fruit juice?
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions...
Which of the following is NOT an example of tertiary structure? hydrogen bonds forming between the Hof a polar Rgroup and the Oor N of another polar amino acid triple helix hydrophobic interactions between two amino acids with nonpolar R groups salt bridges between ionized groups of polar basic and polar acidic amino acids
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one amino...
Understand alpha helices and beta pleated sheets Question The coiling of an a-helix is maintained in position by which of the following bonds? Select the correct answer below: O hydrogen bonds between the oxygen atom in the carbonyl group in one amino acid and the hydrogen atom of the hydroxyl group in an R-group of another amino acid that is four amino acids farther along the chain O hydrogen bonds between the oxygen atom in the carbonyl group in one...
Question 2 (1 point) Amino acids can be classified as A. Hydrophobic amino acids with nonpolar R groups B. Polar amino acids with neutral R groups but the charge is not evenly distributed C. Positively charged amino acids with R groups that have positive charge at physiological pH. D. Negatively charged amino acids with R groups that have a negative charge at physiological pH. How would the amino acid alanine be classified? Think through your reasoning. L-Alanine H2N-CHC-OH CH3
There are four amino acid residues between each turn of an alpha helix, because O hydrogen bonding between the carbonyl and amine groups is more stable at this distance. O amino acid residues need a certain amount of distance between then during the turn. O the polar amino acids are more attractive to the peptide bond at this distance. O None of the choices are correct.
Understand alpha helices and beta pleated sheets Question Every helical turn in an a-helix has 3.6 amino acid residues. Then, hydrogen bonds are formed between the oxygen atom in amino acid along the the carbonyl group in the first amino acid and the hydrogen atom in the amine group of the chain. Select the correct answer below: third second fourth fifth FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
Understand alpha helices and beta pleated sheets Question How is it possible for the a-helix to have amino acids with bulky side chains while the B-pleated sheets cannot? Select the correct answer below: O The R groups in the a-helix stabilize the structure, while they interfere with the hydrogen bonds in a B-pleated sheet. The R groups are contained inside the a-helix structure, while they interfere with the hydrogen bonds in a B- pleated sheet. O The R groups lie...
a) which amino acid tested is most polar?
b) look up the structure of the amino acids. explain why it
makes sense that the amino acid you listed is more polar than the
others?
c) what amino acids are in the fruit juice?
D. CHROMATOGRAPHY Chromatography is a general technique that is used to separate various materials. In this case, students can use the unique chemistry of the amino acid to determine its migration in a specific solvent. The solutions...
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