Download Major Assignment: Modelling Carbohydrates, Lipids, and Proteins

Major Assignment PART I: Modelling Carbohydrates, Lipids, and Proteins.
Due Date: Friday, October 10
/30
Part I:
Complete the 3 mini-investigations as outlined on the Biochemistry Unit Outline.
Complete the follow-up text questions for each mini-investigation, in full
sentences, as outlined on the Biochemistry Unit Outline. (21 marks)
Please note the following modifications/additions to questions:
p. 33 C: Explain whether fructose and glucose are isomers.
p. 33 D: The glucose chain initially referred to is the one made in Step 6.
For the follow-up question, specify the molecule that would be made for
alpha-glucoses in a single chain. What would be the name of the
glycosidic linkages in this alpha-glucose chain?
p. 37 E: Which element is less abundant in lipids than in carbs?
p. 37 F: Explain your answers (why polar or not? To what degree polar?).
Additional Questions:
After all text questions, answer these questions under the heading “Additional
Questions”.
1.) What is the function of glycogen? What is the function of cellulose? Explain
why the molecular structures of each of these polysaccharides are well suited for
their functions. (4 marks)
2.) Explain what 2 general parts of a phospholipid make it “amphipathic”. Name
the specific components that make up each of these 2 parts, and describe why
they have the polarity that they do. (2 marks)
3.) Draw and label the amino acids cysteine and serine. Draw the product
formed from the reaction of cysteine bonding with serine to create a dipeptide.
Circle the 4 atoms that surround the resulting peptide bond. (3 marks)