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- 1. Explain the theory of emulsion formation. 2. What is the difference between an oil-in-water and water-in-oil emulsion ? 3. What is the role of an emulsifying agent ? 4. how egg yolk acts as an emulsifying agent? cite references7.Why is it necessary to make a skin puncture to a depth of 3mm?1. A yellow-brown urine that produces yellow foam when shaken can be suspected of containing what substance?
- 1: Why we must used calibrated dropper in preparing digoxin elixir? 2: Why we should use glycerine and alcohol mixture in preparing phenobarbitol elixir?1. What is the role of chloride in biochemical processes of the body? 2. What are the other test for chloride?1. Conclude regarding the chemical composition of the formation of film in fresh milk. 2. Why does fresh milk can form a film and sour milk cant?
- 7. The spectrophotometer is used to measure absorbance experimentally. Briefly, explain how this is accomplished.1. What is the purpose of the oil when using oil immersion objective? 2. Why should the oil immersion objective be cleaned immediately after use?1. How could pastes be used to treat wounds? 2. Explain why a paste provides more of an occlusive effect than a lotion 3. Are pastes biphasic or single-phase? Explain.
- 1. What is the significance of soaking the container in bleach? 2. What is the significance of keping the container closed except when pouring the medium; partially opening the container during pour-plating in preparing culture media?1. what sugar causes the same color reactions with the test for pentoses? why? 2. what other substances interfere with the indican reactions? 3. Why should the specimen be albumin free when performing the chloride test for urine?B. Why do we wash the Ni-NTA beads after applying the clarified lysate so many times? What would happen if you skipped the wash steps?