Identify the structural components of an amino acid and understand the chemical diversity of amino acids...
Identify the structural components of an amino acid and understand the chemical diversity of amino acids Question Coo- Anch H₂N-CH2 H2C CH Proline Proline's structure has a unique feature not found in other amino acids. What is it? Select the correct answer below: O Proline is chiral. O The amino group is part of the side chain. O Proline is positively charged. O Proline is achiral. P FEEDBACK MORE INSTRUCTION SUBMIT Content attribution Understand protonation and deprotonation of carboxyl and...
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...
Understand protonation and deprotonation of carboxyl and amino groups in amino acids Question Which of the following statements are NOT true regarding the ionization of nonacidic and nonbasic amino acids? Select all that apply: O The amino and carboxyl groups are both ionized at the isoelectric point. U The amino group will be ionized when the pH is above the isoelectric point. The carboxyl group will be ionized when the pH is below the isoelectric point. The amino group will...
Understand protonation and deprotonation of carboxyl and amino groups in amino acids Question With reference to the image below, identify the change in glycine at pH less than 6.0. N – CH – C + H - H3N+ — CH- . H OH Select the correct answer below: O protonation O deprotonation O The pH and isoelectric point are equal. O All of the above FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
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 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 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...
Recognize Physical and Chemical Properties of Aldehydes Question Choose the options below that are characteristics unique to aldehydes. Select all that apply: They are prepared by oxidizing alcohols whose -OH functional group is located on a carbon atom in the end of the carbon chain. They are prepared by oxidizing alcohols whose -OH functional group is located on a carbon atom in the middle of the carbon chain. They are named using the suffix -al A common aldehyde, formaldehyde, can...
Understand alpha helices and beta pleated sheets Question Which amino acid from the following list best fits the B-pleated sheet? Select the correct answer below: tryptophan alanine arginine lysine FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
how does the protein environment surrounding an amino acid chain affect its chemical properties?Consider the carboxyl group on an asparate side chain in the following environments in a protein. Rank in order these environments from the highest to the lowest proportion of carboxyl groups in the -COO- form.that is in terms of pKas. 1. an aspartate side chain on the surface of protein with no other ionizable groups nearby. 2. an aspartate side chain buried in a hydrophobic pocket on...