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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. Sugar with a carbonyl group at the 2 carbon position






2. Formula for urea






3. 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






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






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






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






7. What stabilizes lipid bilayer?






8. Characteristics of polar amino acids






9. Histidine






10. 2 reasons why fats have more efficient energy stores than carbs






11. Nonpolar - hydrophobic amino acids






12. Fxn of cholesterol in the membrane?






13. Glycosidic linkage of cellulose






14. Acetic acid formula?






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






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






17. Enzymes that hydrolyze fats






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






19. 2 covalent bonds formed in proteins






20. Glycosidic linkage of sucrose






21. Characteristics of acidic amino acids






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






23. Glycosidic linkage of maltose






24. Hydrophilic amino acids






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






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






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






28. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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






31. 1. it exists in solution in equilibrium with linear form 2. mutarotation occurs readily 3. it is a reducing sugar - and reacts positively w/ Benedict's reagent






32. Glycosidic linkage of lactose






33. 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)






34. Enzyme that hydrolyzes maltose into 2 glucose molecules?






35. Fatty acid structure






36. 3 carbon triol that forms backbone of triacylglycerol






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






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






39. Unique feature of glycine






40. Molecules with the same atoms - but different bonds






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






42. Glyceraldehyde






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






44. Characteristics of hydrophobic amino acids






45. Characteristic of basic amino acids






46. 3 physiological roles of lipids






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






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






49. Unique feature of cysteine






50. Sugar with an aldehyde at the first carbon position