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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 an aldehyde at the first carbon position






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






3. Glycosidic linkage of lactose






4. 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)






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






6. Energy storage molecule of carbohydrates for animals






7. Characteristic of basic amino acids






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






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






10. Sulfur containing amino acids






11. Glyceraldehyde






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






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






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






15. Nonpolar - hydrophobic amino acids






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






17. Hydrophobic and hydrophilic interactions btw amino acids more distant from each other on the polypeptide chain






18. What kind of lipids compromise the lipid bilayer?






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






20. Name for 6 membered ring






21. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






22. Characteristics of hydrophobic amino acids






23. Unique feature of proline






24. Polar amino acids






25. Unique feature of cysteine






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






27. Glycosidic linkage of maltose






28. Enzyme that hydrolyzes lactose into galactose and glucose into






29. 3 carbon triol that forms backbone of triacylglycerol






30. Acetic acid formula?






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






32. Formula for urea






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






34. Characteristics of polar amino acids






35. 2 covalent bonds formed in proteins






36. Energy storage molecule of carbohydrates for plants






37. Fxn of cholesterol in the membrane?






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






39. Interconversion btw two anomers






40. Molecules with the same atoms - but different bonds






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






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






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






44. Naturally occurring carbohydrates are formed from what?






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






46. 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






47. D and L describe what?






48. Unique feature of glycine






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






50. 2 reasons why fats have more efficient energy stores than carbs