University:
University of Wolverhampton
Course:
4PY019 | Pharmacy
Academic year:

2024
Views:

428

Pages:

3
Author:

Sara

1. What are the aliphatic amino acids? glycine, alanine, valine, leucine, isoleucine 2. What are the aromatic amino acids? phenylalanine, tyrosine, tryptophan 3. What are the serine and threonine aliphatic hydroxyl amino acids? 4. What are the acidic amino acids? aspartic acid, glutamic acid 5. What are the amidic amino acids? asparagine, glutamine 6. What are the ba- lysine, arginine, histidine sic amino acids? 7. What are the sul- methionine and cysteine phur containing amino acids? 8. What are Imino acids? Proline 9. What is a nucle- An electron pair donor ophile? 10. Are amino acids No coded for? 11. What amino acid Glycine is optically inert? 12. 1/3 Are most amino Yes - chiral molecules are observed to rotate polarized acids optically light in either clockwise or counterclockwise direction and active? they have asymmetry with the structure 13. D-amino acids Found in the cell wall of some bacteria but unlike L amino acids, they are not incorporated into proteins 14. What does d/l re- D(right handed isomer) L(left handed isomer) fer to? 15. Define amphoteric An amphoteric species can act as either a base or an acid. 16. What are zwitteri- molecules that contain both positive and negative charges ons? on them 17. What occur in a The carboxyl group accepts a proton so overall charge is amphoteric mol- positive ecules at low ph 18. How is a peptide Via dehydration reactions. The carboxyl group loses its bond formed? OH, the amine group loses an H. The net result is a water molecule. Now, the two ends meet. Hydrolysis reverses this process (uses the OH to reform the carboxyl end of an amino acid, and uses H to reform the amino end of the amino acid, resulting in two amino acids as opposed to a peptide). 19. What type of bond is a peptide? covalent 20. What occurs in The amino group loses a proton and the overall charge in amphoteric mol- negative ecules at high ph? 21. What are amino Residues acids referred to 2/3 as in polypeptide chains? 22. globular proteins these are compact, generally rounded, and soluble in water. 23. Fibrous proteins long, insoluble, structural proteins. 24. What is denatur- When an enzyme's conditions are not optimum and its ing shape changes so it will not fit the substrate anymore vdw, h bonds ionic and hydrophobic interactions are affected 25. Describe glycoly- Glucose is converted into fructose 1,6 bis phosphate sis Cleavage of the fructose 1,6 bisphosphate into two three carbon fragments ATP is harvested when 3c fragments are oxidised to pyruvate 26. Likkle tip Afferent arrives efferent exits cns 27. Features of nerves High rate of metabolis therefore high conc of glu and o2 required Once formed they lose their ability to divide (amitotic) A receptive input region, conducting component and secretory output region 28. Features of den- short, tapering, and diffusely branched (telodendria) drites 29. Explain the steps of an action potential 3/3