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MCAT Organic Chemistry 2

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Amino group placed on the left of a fischer projection is a?






2. Unique feature of proline






3. Physiological pH






4. PH at which the amino acid has a net neutral charge






5. Storage form of fatty acid that is composed of 3 esterified fatty acid to a glycerol molecule






6. Macromolecule that performs a variety of bodily functions and is composed of up to 20 different amino acids






7. Naturally occurring carbohydrates are formed from what?






8. Diastereomers that vary in the configuration of 1 chiral center






9. Fatty acid structure






10. Formula for urea






11. Molecules with the same atoms - but different bonds






12. Covalent bond formed btw carboxyl group of one atom and the amino group of another amino acid in an addition - elimination mechanism - enzymes are required to carry out rxn






13. Glyceraldehyde






14. Epimers of sugars that vary in the configuration of their anomeric carbons






15. Rule for all amino acids that are nonbasic and nonacidic pertaining to pI value?






16. Characteristics of hydrophobic amino acids






17. The amino acid sequence of a protein that is determined by peptide bond






18. Adjacent polypeptide strands running in opposite directions in Beta pleated sheet structure






19. Characteristic of basic amino acids






20. Property of fatty acids where one end is hydrophobic and the other is hydrophilic






21. 2 reasons why fats have more efficient energy stores than carbs






22. Name for 5 membered ring






23. Sugar with a carbonyl group at the 2 carbon position






24. Fxn of cholesterol in the membrane?






25. What configuration do all naturally occuring amino acids have?






26. Carbon that in linear form has a carbonyl - or in cyclic form has a hemiacetal or an acetal






27. Name for 6 membered ring






28. Unique feature of glycine






29. Fatty acid w/ one or more double bonds in cis form predominately






30. 1. it requires an enzyme to linearize and mutarotate 2. it is not a reducing sugar and give negative Benedict's test






31. 1.has partial double bond character due to resonance 2. it cannot rotate 3. amide H is someWhat acidic and can H bond






32. Interaction btw polypeptide subunits arranged in polypeptide. can be covalent bonds or intermolecular forces - disulfide bond that does not form btw residues on the same protein affect (blank)






33. Basic amino acids






34. Initial folding of proteins into shapes stabilized by H bonds btw amino and carboxyl groups of backbone






35. Acetic acid formula?






36. 2 covalent bonds formed in proteins






37. Glycosidic linkage of maltose






38. Enzyme that hydrolyzes maltose into 2 glucose molecules?






39. 3 carbon triol that forms backbone of triacylglycerol






40. Generated btw either thiols on different proteins or thiols on the same protein






41. Molecules with the same atoms and same bonds - but different bond geometries; can either be enantiomers or diastereomers






42. 4 causes of denaturation of proteins






43. Energy storage molecule of carbohydrates for animals






44. Fatty acid w/ no double bonds and maximum number of hydrogens






45. Hydrolysis






46. Unique feature of cysteine






47. Molecule can act as a base and as an acid






48. Right handed helix w/ carboxyl of one amino acid bound to the amine of another amino acid three residues away - proline never resides in this structure b/c it would place a kink in the helix






49. Sugar with an aldehyde at the first carbon position






50. 2 things that accelerate the rate of hydrolysis for peptide cleavage?