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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 right of a fischer projection is a?






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






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






4. Name for 6 membered ring






5. PH at which positive and negative charges balance to form a zwitterion






6. Characteristic of basic amino acids






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






8. 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






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






10. (+) and (-) describe what?






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






12. Name for 5 membered ring






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






14. (R) and (S) describe what?






15. Enzyme that hydrolyzes lactose into galactose and glucose into






16. 3 physiological roles of lipids






17. Characteristics of hydrophobic amino acids






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






19. Energy storage molecule of carbohydrates for plants






20. Energy storage molecule of carbohydrates for animals






21. What describes the affinity of functional groups for a proton?






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






23. Formula for urea






24. Sugar with an aldehyde at the first carbon position






25. What stabilizes lipid bilayer?






26. 3 carbon triol that forms backbone of triacylglycerol






27. Characteristics of acidic amino acids






28. Structure where H bonds occur btw residues distant from each other - or on a separate chain. backbone is extended rather than coiled






29. 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






30. Glycosidic linkage of lactose






31. Glyceraldehyde






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






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






35. Polar amino acids






36. Nonpolar - hydrophobic amino acids






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






38. Amino group placed on the left of a fischer projection is a?






39. Fxn of cholesterol in the membrane?






40. Unique feature of cysteine






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






42. Enzyme that hydrolyzes maltose into 2 glucose molecules?






43. Naturally occurring carbohydrates are formed from what?






44. Hydrolysis






45. D and L describe what?






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






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






48. Characteristics of polar amino acids






49. Acidic amino acids






50. Unique feature of glycine