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CLC108/CLB108 Tutorial #1
1. 2. Define Cell Theory. Discuss the similarities & differences between prokaryotes & eukaryotes, with diagrammatic illustrations. Discuss the similarities & differences between plant & animal cells, with diagrammatic illustrations. Describe the Davson-Danielli model of plasma membrane with diagrammatic illustration. State the function(s) of the following cell organelles: (a) (b) (c) (d) (e) (f) 6. Golgi complex Mitochondria Smooth ER Rough ER Ribosomes Lysosome

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Human red blood cells, erythrocytes (Figure 1) deviate from the typical eukaryotic cell in several aspects.

Figure 1

(a) In terms of cell organelle composition, how do human erythrocytes differ from the typical eukaryotic cell? (b) Propose the advantage(s) of such an arrangement

Tutorial #2
1. Determine whether each of the statements about noncovalent interactions is true or false. If false, change the statement so it is true a. Ionic bonds are the result of electrostatic attraction between two ionizes functional groups of opposite charge. b. Hydrogen bonds result from interaction of an anion with a hydrogen atom. c. Hydrophobic interactions are electrostatic attractions between nonpolar functional groups and water. d. H+ and OH- interact together by ionic bonding to form water. 2. Identify the type of bonding between each pair of atoms and molecules. a. Na+Clb. H-O-H c. H-O …. H-O H H …..

H O H

d. H2N-C-NH-H (ii) (i) O

3. Describe the differences between ionic bonds and hydrogen bonds.

4. Which of the following terms does NOT refer to an example of a weak force of interaction between two biological molecules? Explain. a) b) c) d) Covalent Van der waals Hydrophobic Electrostatic

Tutorial #3

1. 2. 3.

Explain why sucrose is non-reducing with the aid of diagrammatic illustrations. Explain lactase intolerance. How can this be solved? Describe the fate of glucose under aerobic conditions, with emphasis on the following cycles or...
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