Answer any 4 of the 7 questions. Essays Evolution Name an…
Answer any 4 of the 7 questions. Essays Evolution Name and define/explain at least 2 principles that define the basic features of life (What properties differentiate living from non-living). (2*2 =4 points) Name the 10 levels of organization. (1 point) Atoms and Water Name the 3 subatomic particles and mention the charge they carry. (0.5 point) Define the following terms – (0.5 * 5 = 2.5 points) Isotopes iii. Ions v. Ionic bond Covalent bond iv. Valence electrons Name five properties of water that help with maintenance of life. (2 points) Macromolecules Describe the different levels of organization for proteins. (2 points) Name and give examples of 3 functions of proteins (3 points) Cell Structure and function Define the terms – (1 point) Membranous organelles ii. Semiautonomous organelles Explain the endo-symbiotic theory of origin of semiautonomous organelles? (2 point) State the function of any of the following 4 organelles – (2 point) Mitochondrion iv. Nucleolus vii. Smooth ER Rough ER v. Golgi apparatus Chloroplast vi. Nucleus Energy in cell Draw and describe the structure of ATP. Explain the factors that make ATP a high-energy molecule. -(2+3 = 5 points) Enzymes.1 Explain Lock-and-key model and induced-fit model of enzyme action in respect to specificity and activity. – (5 points) Enzymes.2 Explain competitive and non-competitive inhibition and their role in action of medicines or poison – (5 point)
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