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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. Glycosidic linkage of lactose






2. Glyceraldehyde






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






4. Interconversion btw two anomers






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






6. Fatty acid structure






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






8. Energy storage molecule of carbohydrates for plants






9. Separation is due to charge - with negative charge moving toward positive electrode and positive charge moving toward negative electrode






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






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






12. Characteristics of acidic amino acids






13. Sugar with an aldehyde at the first carbon position






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






15. 2 reasons why fats have more efficient energy stores than carbs






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






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






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






19. 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)






20. Nonpolar - hydrophobic amino acids






21. Basic amino acids






22. Naturally occurring carbohydrates are formed from what?






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






24. 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






25. 3 physiological roles of lipids






26. Unique feature of glycine






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






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






29. Polar amino acids






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






31. Glycosidic linkage of sucrose






32. D and L describe what?






33. Enzymes that hydrolyze fats






34. Amino group placed on the right of a fischer projection is a?






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






36. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






38. Name for 6 membered ring






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






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






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






42. Hydrolysis






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






44. Glycosidic linkage of maltose






45. Acidic amino acids






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






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






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






49. 3 carbon triol that forms backbone of triacylglycerol






50. Formula for urea