A&PI Assignment 2 Chemistry of Life.docx (1)

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Oct 30, 2023

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A&PI Assignment 2 Chemistry of Life 1. The pH of lemon juice is 2, and the pH of orange juice is 4. Which of these is more acidic, and by how much? 2. The pH of the human body ranges between —-------------and —------------. 2. Consider iron (Fe), hydrogen gas (H2), and ammonia (NH3). Which of these are atoms? Which of them are molecules? Which of them are compounds? Explain each answer. 3. Which bond is formed when ions of opposite charge attract? and which bond is formed between atoms that share electrons? Which bond is formed between water molecules? 4. Molecular formula indicate the simple numbers of each type of —--------------in a molecule, with no information on structure. For example the molecular formula of glucose is C6H12O6 4. What is the difference between solution, colloid and suspension. What do you consider protein in blood? What do you consider NaCl in water? 5. What are hydrophilic and hydrophobic substances? Lipids are —----------while proteins are —----------------. 6. Which is more likely to be changed by heating a protein, its primary structure or its tertiary structure? Explain. 7. What is the difference between saturated and unsaturated fat? 8. If a sugar has 5 carbon atoms, what is the molecular formula for this sugar? C5 H_ _O_ _ 9. Are carbohydrates, protein, and lipids organic or inorganic molecules?
Organic molecules usually have —------------------------ atoms in their formula in rings or long chain. 10. Complete: A. Carbohydrates are polymers of —----------------- and play a role as the major source of energy. B. Disaccharides are —--------------- C. Proteins are polymers of —-----------------------------. D. —-------------------------are the major component of cell membrane.
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