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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 maltose






2. 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






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






4. Molecules with the same atoms - but different bonds






5. Naturally occurring carbohydrates are formed from what?






6. Unique feature of proline






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






8. Formula for urea






9. Unique feature of glycine






10. D and L describe what?






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






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






13. 3 carbon triol that forms backbone of triacylglycerol






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






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






16. Basic amino acids






17. Sulfur containing amino acids






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






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






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






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






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






23. Characteristic of basic amino acids






24. Characteristics of hydrophobic amino acids






25. 2 things that accelerate the rate of hydrolysis for peptide cleavage?






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






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






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






29. Glycosidic linkage of lactose






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






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






32. Hydrophilic amino acids






33. Hydrolysis






34. Acidic amino acids






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






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






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






38. Enzyme that hydrolyzes maltose into 2 glucose molecules?






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






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






41. Interconversion btw two anomers






42. 3 physiological roles of lipids






43. Polar amino acids






44. Physiological pH






45. Glycosidic linkage of sucrose






46. Enzyme that hydrolyzes lactose into galactose and glucose into






47. 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






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






49. Energy storage molecule of carbohydrates for plants






50. Histidine