PLEASE HELP 1. How many chirality centers does ribose have? Identify them.
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- This is DNA. Locate the nitrogen bases (nitrogens are blue). Where are they located in the molecule?Locate the sugars and phosphates, and describe their location. Adjacent nucleotides are linked by covalent phosphodiester bonds (-O-P-O-) produced by a condensation reaction. What parts of the adjacent nucleotides are linked by phosphodiester bonds?Two nitrogenous bases extending towards the middle of the double helix. Are there any covalent bonds between these bases?If there are no covalent bonds between these bases, what other kinds of bonds might hold the two strands of the double helix together?PRACTICE NAMING. Identify the number of amino acids, number of peptide bonds, and name the peptide. i.e. Ala-Cys • Dipeptide • 1 peptide bond • Alanylcysteine Cys-tyr-phe-gln-asn-cys-pro-arg-glyGiven the structure of the lipid. huan لما • To which group does this lipid belong? Triacylglycerol} • Is it saponifiable or non-saponifiable? O N-H H w {Choices: Eicosanoid, Glycerophospholipid, Glycolipid, Sphingophospholipid, Steroid, Terpene,
- Oligopeptide 1 Oligopeptide 2 N. N- H. N-H H Give the three-letter and one-letter names of the amino acids in each oligopeptide starting from the amino terminal to the carboxyl terminal. Make sure that the amino acid names are arranged in CORRECT order for both oligopeptides.Fill in the blanks. The parentheses are the choices for the blank. Fatty acids and nucleotides are examples of molecular subunits called ______ (monomers, polymers). Complex molecules such as proteins or nucleic acids formed from these repeated molecular subunits are called _______ (monomers, polymers).Choose all that apply. This molecule is O || O-P-O-P-O-P-O- 0 O a lipid O™ one of the building blocks of protein a nucleotide triphosphate ATP one of the building blocks of RNA a protein O™ one of the building blocks of DNA a nucleic acid a carbohydrate the energy currency of the cell an amino acid OIPIO о O™ N H₂N OH OH N N
- Please explain. Be concise. Make sure your drawings are legible. Draw a chart for the classifications and subclassifications of lipidsR V. Phospholipids are the main structural lipids that comprise cellular and organellar membranes. One abundant phospholipid in bacterial cell membranes is phosphatidylethanolamine (PE), which has a generic structure shown on the right. Note that R1 R and R2 are representative alkyl chains of attached fatty acids, each having about 16 – 20 carbon atoms. a) The overall net charge in one PE molecule is: -2 -1 0 +1 +2 CH₂ Phosphatidylethanolamine (PE) -CH H₂C. b) The glycerophosphate backbone in PE is a: D-enantiomer c) The fatty acids are attached to PE via which type of bond? amine L-enantiomer racemic NH3 amide ester ether d) Draw the commonly used cartoon representation of one phospholipid molecule. Label the hydrophilic and hydrophobic parts.PART B. Building Polymers- LIPIDS: Using three molecules of stearic acid, draw a triglyceride and label the ester linkages between the glycerol molecule and the fatty acid molecules. Show every bond (do not use shorthand).
- A peptide bond... is a version of an ester bond is a version of an amide bond is the basis of protein secondary structure is formed by addition of waterage 2 of 9 FI 1. Recognize the following types of biomolecules when given images such as the ones below and on the next page: ● glucose (which is a monosaccharide) HO 0 of 618 words F2 ● ● ● amino acid protein (recall a protein with less than 50 amino acids can also be called a peptide whereas a protein with 50 or more amino acids can also called a polypeptide) steroids polysaccharide ● • triglycerides ● ● phospholipids ● ● DNA RNA CH₂OH H OH H H OH English (United States) 20 F3 $ +: OFF Draw with Add Pen Trackpad 000 % F5 MacBook Air A DNA F6 & ◄◄ F7 * ► 11 F8 Focus F9 R F10 - F11 212Choose from A-F. This amino acid may serve as a phosphorylation site, and turn on or off the protein. H3N-C-H H3N-C-H CH2 H2N CH 2 H-C-OH CH2 H2C CH2 CH3 CH3 Choice "A" Choice "B" Choice "C" COO H,N-C-H H,N-C-H H3N-C-H CH2 CH2 C=CH C-NH CH2 NH | CH SH C-N Choice "E" Choice "F" Choice "D"