BIOCHEMISTRY FIRST EXAM FALL 2020 1. Describe the major features seen in a prokatyotic cell 2. Describe the major features seen in an animal cell 3. Describe the major features seen in a plant cell 4....

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BIOCHEMISTRY FIRST EXAM FALL 2020 1. Describe the major features seen in a prokatyotic cell 2. Describe the major features seen in an animal cell 3. Describe the major features seen in a plant cell 4. Describe each of these elements as: a) component of macromolecules b) component of electrolytes c) trace elements Zn _________ C __________ P __________ Na __________ Cl ___________- 5. Describe what a micelle is and the factors which drive their formation 6. Describe what an emulsion is and the factors which drive its formation 7. The bicarbonate ion HCO3- has a pKa of 10.2. Describe how many grams each of sodium bicarbonate (NaHCO3) and sodium carbonate (Na2CO3) need to be weighed out to make 1.00L buffer whose pH is 10.00? Molar masses: Na = 23.00, C = 12.00 O = 16.00 H = 1.00 8. Fill in the missing components for each of the amino acids listed below: Structure Name 3 letter symbol 1-letter symbol Alanine Val K Tryptophan Ser Given the following information: side chain amino group pKa = 10.5, alpha amino group pKa = 9.2, carboxyl pKa = 2.2. Draw the structures of the four possible forms of Lys which can exist in various pH ranges. For each form, give the charge and the pH range at which it exists. Give a definition and an example for each of these terms: Primary structure Secondary structure Tertiary structure Quaternary structure Motif Domain Subunit Oligomeric protein