True or False? 1. The 5’ carbon in a nucleotide is a part of the nucleic acid backbone’s phosphodiester bond. 2.Secondary structure of proteins is stabilized by covalent interactions between the side chain (R) groups on amino acids 3.Primary structure only explains the secondary structure of a protein and does not contribute to tertiary or quaternary structure

True or False? 1. The 5’ carbon in a nucleotide is a part of the nucleic acid backbone’s phosphodiester bond. 2.Secondary structure of proteins is stabilized by covalent interactions between the side chain (R) groups on amino acids 3.Primary structure only explains the secondary structure of a protein and does not contribute to tertiary or quaternary structure

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter3: Molecules Of Life

Section: Chapter Questions

Problem 6SQ

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6. b. Draw a box around the disulfide bridge in oxytocin, if present, or write "none". 7. Mark each peptide bond in oxytocin by making the corresponding line in the structure thicker or marking it with a different color. The first one is shown for you as an example (in dark orange). 8. Number the central carbon of each amino acid in oxytocin by pointing a small arrow to it or by circling the corresponding vertex in the image. Numbers 1 and 2 indicate the central carbons of the first and second amino acids of oxytocin, and are shown for you as an example. 9. Fill out the following table, listing amino acids that make up oxytocin in order, from the N terminus to the C terminus, characterizing each amino acid by the properties of its R group (side chains), and briefly indicating the reasoning for the characterization. You may consult amino acid groupings by category in the slides (or the textbook, p.49), but you must explain the reasoning for each in your own words. CO 1 AA# Abbre- Full…
1. Why a peptide bond can't rotate freely? 6%. 2. The and are two amino acids usually will break an a helix. 4% 3. The main force to keep a helices or 3 pleated sheets in their conformation is 4%
1 which parts of amino acids are involved in tertiary structures ? 2 polar side chain can make hydrogen bonds. Draw any polar side chain and a hydrogen bond to water. 3 what are the functional group of the basic amino acids? 4 what is the organic functional group in a peptide bond? 5 Do all protein have quaternary structure? 6 phenylalanine and valine are non polar amino acids. Do you think they are more likely to be found on the exterior or interior of a protein
3c) The 3 structure of a protein incorporates any 2 structure the protein has, but results primarily from interactions between amino acid side groups. Name two different amino acids whose side groups could participate in each type of interaction given below under physiological conditions (pH 7.2-7.5). Ionic bonding: Hydrophobic clustering: Hydrogen bonding:
1. what do you think a “peptide”means? 2. Proteins are extremely long, folded chains of amino acids, containing between 150-1000 amino acids linked together in a straight chain. A protein will have a long repeating chain of-N-C-C- as its backbone, with different R groups sticking out. How long could a protein be? be specific. 3. Add the C’s and H’s into their structural formulas. picture included
TRUE or FALSE 1. Amino acids are monomers of biomolecule proteins. 2. A base + a sugar + phosphate are composition of nucleotide. 3. Primary structure is simply the order of amino acids in a polypeptide strand. 4. Photosynthesis uses sunlight to convert water and carbon dioxide into oxygen. 5. Ribosomes is a cell organelles that involved in the process of protein synthesis.
Please identify whether the statements below is true or false. Thank you! (Please put a short explanation) 1. The primary structure of a protein consists of the amino acid sequence along the polypeptide chain.2. A protein may contain 20 different kinds of amino acids. Each amino acid has hydroxyl group at one end and an acid group at the other and a distinctive side chain.
6. Quaternary structure. Oligomeric and polymeric proteins. Formation of a quaternary structure of proteins from several domains. Chemical bonds that form and stabilize a given structure.
I. II. III. IV. V. O HƠN-CH-CANH-CH-C-NH-CH-CO alanyl CH3 2. Types of protein structures: What is the type of protein structure that contains a single strand and bound by disulfide bond. glycyl OH serine The structure containing an alpha- helix CH, 0 || H₂N-C-C-OH H O The structure contains beta pleated sheets The structure is made up of subunit What is the difference between a tertiary structure and a quaternary structure? CH₂OH 3. Indicate which structure is at low pH (acidic, basic or neutral (zwitterion) protein structures? H R H₂N-C-COO™ 4. What are five factors that affects 5.Indicate the amino acid as polar or nonpolar OH CH, O ! H₂N-C-C-OH H CH: 0 H₂N-C-C-0 H CH3 CH3 CH CH, O H₂N-C-C-0 H 6) Acids and bases denature a protein by disrupting A) peptide bonds and ionic bonds. B) amide bonds and alkene bonds. C) hydrophobic interactions and peptide bonds. D) ionic bonds and hydrophobic interactions. E) ionic bonds and hydrogen bonds. 5) Heat denatures a protein by disrupting A)…
Proteins occurring in the b-pleated sheet structure Multiple Choice are relatively inelastic. produce structurally weak materials never occur in nature. contain no peptide bonds. are not involved in hydrogen bonds.
Select the incorrect statement(s). CH₂ OH NH₂ Polypeptide backbone CH₂ A C- CH₂ CH CH3 CH3 CH3 CH3 CH CH₂ NH₂ CH₂ CH₂ CH₂ CH₂ B D This is a tertiary structure of a protein. Letter A represents hydrogen bond. Letter C represents disulfide bond. This represents a secondary structure. This illustrates a quaternary structure.
Match the following levels of protein structure with their description two or more polypeptide chains > > twisting and folding to form a 3-dimensional structure, dependent on the locations of the charged groups and polar groups within the amino acid chain, sometimes covalent bonds form between sulfur atoms (called disulfide bonds) alpha helix and beta- pleated sheets formed by the arrangement of hydrogen bonds between amino acids, many other shapes are possible amino acid sequence 1. quaternary 2. tertiary 3. primary 4. secondary