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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. Diastereomers that vary in the configuration of 1 chiral center






2. Characteristic of basic amino acids






3. Molecules with the same atoms - but different bonds






4. 3 physiological roles of lipids






5. Name for 5 membered ring






6. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






8. Basic amino acids






9. 4 causes of denaturation of proteins






10. Physiological pH






11. What kind of lipids compromise the lipid bilayer?






12. Fxn of cholesterol in the membrane?






13. Glycosidic linkage of lactose






14. Fatty acid structure






15. Hydrophilic amino acids






16. Characteristics of acidic amino acids






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






18. Formula for urea






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






20. D and L describe what?






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






22. 2 reasons why fats have more efficient energy stores than carbs






23. Characteristics of hydrophobic amino acids






24. Glycosidic linkage of sucrose






25. Enzyme that hydrolyzes lactose into galactose and glucose into






26. Characteristics of polar amino acids






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






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






29. Nonpolar - hydrophobic amino acids






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






31. Interconversion btw two anomers






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






33. Unique feature of glycine






34. Energy storage molecule of carbohydrates for plants






35. 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






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






37. Naturally occurring carbohydrates are formed from what?






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






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






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






41. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






43. 3 carbon triol that forms backbone of triacylglycerol






44. Enzymes that hydrolyze fats






45. Sulfur containing amino acids






46. Energy storage molecule of carbohydrates for animals






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






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






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






50. Unique feature of proline