Which levels of protein structure are determined by primary structure (i.e. the specific amino acid sequence beginning at the amino terminus of the polypeptide)? Mark all that apply. 1. secondary structure (alpha helices and/or beta sheets) 2. tertiary structure (the folded, three-dimensional shape of a protein) 3. amino acids 4. peptide bonds

Which levels of protein structure are determined by primary structure (i.e. the specific amino acid sequence beginning at the amino terminus of the polypeptide)? Mark all that apply. 1. secondary structure (alpha helices and/or beta sheets) 2. tertiary structure (the folded, three-dimensional shape of a protein) 3. amino acids 4. peptide bonds

Nutrition Now

8th Edition

ISBN:9781337415408

Author:Brown

Publisher:Brown

Chapter15: Proteins And Amino Acids

Section: Chapter Questions

Problem 12RQ

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Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary and secondary (b) primary and tertiary (c) secondary, tertiary, and quaternary (d) primary, secondary, and tertiary (e) primary, secondary, tertiary, and quaternary
What level of protein structure is determined by the following:(a) Peptide bonds between amino acids?(b) Hydrogen bonds between backbone carbonyl oxygen atoms and hydrogen atoms attached to backbone nitrogen atoms?(c) R group interactions that may involve Van der Waalsforces, ionic interactions, or hydrogen bonds?
Which of the following statements is FALSE? Select one: a. Secondary structure of a protein determines how it folds up into a unique three dimensional structure. b. Three dimensional structure of a protein determines the function of a protein. c. Primary structure of a protein determines how it folds up into a unique three dimensional structure. d. Amino acid sequence is absolutely important for a particular protein.
Which of the following statements is/are TRUE for globular proteins? A. sensitive to changes in pH & heat B. regular amino acid sequence C. soluble in water D. structural role
Why do small proteins have more difficulty folding and holding shape than larger proteins? If you were designing a small protein, what elements of structure might you include to increase protein stability?
which of the following is correct about the structure of proteins? a- the number of peptide bonds is equivalent to the number of amino acid residues b- the secondary structure of proteins are mostly stabilized by hydrophobic interactions c- protiens mostly composed of polar amino acids will have an elongated (fibrous) tertiary structure d- the quaternary structure of a protein is formed between or among similar polypeptides only
A mutation leads to a change in amino acid from valine, an amino acid with a nonpolar side chain, to aspartic acid, an amino acid with a polar, negatively-charged side chain. Do you think that the following levels of protein structure change? If so, how and why? If not, why not? Please frame your answer in terms of chemical bonds and interactions. (primary structure, secondary structure, tertiary structure, quartenary structure)
the sequence of amino acids in a protein is known as the secondary structure true or false?
Which levels of protein structure are determined by primary structure mark all that apply 1. secondary structure (alpha helices and/or beta sheets) 2. tertiary structure (the folded, three-dimensional shape of a protein) 3. amino acids 4. peptide bonds
Describe as completely as possible, the four levels of protein What type of bonds hold a protein together at the primary level? What type of bonds maintain the protein at the secondary and tertiary level? Give an example of secondary, tertiary, and quarternary level proteins. At which level is the protein functional? What happens (at a molecular level) when a protein is denatured?
why would one missing amino acid make a difference in the protein's shape, and why would a change in shape be so important to the functioning of the protein?
Which statement about quaternary structure is TRUE? Quaternary structure is unaffected by acids or heat. Quaternary structure is determined by the same interaction that holds an α-helix together. Quaternary structure is how prosthetic groups are held in a protein. Quaternary structure is the position of subunits in the overall structure of a protein. All proteins have quaternary structure