Explore BrainMass

Explore BrainMass

    Biological and Bioactive Organic Compounds

    Liptor, Bile Salts and Cholesterol

    For lipitor, bile salt, and cholesterol and with knowledge of intermolecular forces, explain the following: a. Which of the three will dissolve in blood and why? b. LDL (bad cholsterol) stands for Low Density Lipoprotein - that is- chlosterol (lipid) surrounded by protein. HDL (good cholosterol) stands for High Density Lip


    Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both. Show what happens if it becomes more acidic. Write structure for phe-val (ionized or unionized). Is it the same as val-phe? Why? Would the dipeptide be neutral, acidic, or basic? Why?


    Lipids (fats) are esters of long chain fatty acids and glycerol. Similarly, describe the general structures of proteins and carbohydrates. In other words, what are the monomers that these biological polymers are composed of?

    Problem Set

    Please label the questions with the appropriate numbers to avoid confusion. 10. The figure below shows a somewhat condensed structural formula for acetaminophen, the active ingredient in Tylenol. CH3 CONH --- (a pentagon) ---- OH a. Write the complex structural formula for acetaminophen, showing all atoms and all bonds

    Molecules, Compounds, etc.

    Please see the attached file for full problem description. 18. Identify the functional groups in morphine and Demerol. Can these molecules be assigned to a particular class of compound? Why or why not? 21. Why of these compounds can exist in chiral forms? OH I a. H C

    Questions related to the chemistry of Cholesterol.

    Please view the attachment...of diagram of cholesterol I. Which of the following groups of atoms lie in a common plane? (enter the letter label(s), unspaced--there may be more than one correct): A. 5,6,7,10 B. 1,2,3,4,5,10 C. 7,8,9,10,11 D. 24,25,26,27 II. What is the hybridization of atom number 27? (enter the lette

    Amino Acids - Tertiary Structure

    The following is a partial protein with 6 amino acids missing. Supply six DIFFERENT amino acids. Choose them such that the amino acids across from each other show tertiary structure interaction. Label the type of interaction (H-bonding, hydrophobic, ion-ion, etc). Please see attachment.

    Determining if Molecules are Lipids

    Are the following two molecule lipids? Explain your reasoning. If the molecule is a lipid, identify the "head" and "tail" section(s). Please see the attachment below for the structural formulas.