5: Membranes (part 1) Quizellenj2022-11-23T13:48:56-05:00 Please sign up for the course before taking this quiz. 1. REVIEW: Is water polar or non-polar?1 neither non-polar polar 2. Which part of a phospholipid molecule loves water– the head or the tails?1 neither tails head both 3. REVIEW: What does hydrophilic mean?1 water hating water loving 4. What is the inside of a lysosome like?1 salty neutral basic (alkaline) acidic 5. What is the electrical charge of a phosphate ion?1 1- 3+ 1+ 3- 6. A lipsome that is filled with water or air is called a:1 lysosome membrane vacuole vesicle 7. REVIEW: A glycerol hanger with three fatty acids attached is called a:1 hydrophobic tail triglyderide phospholipid saturated fat 8. The Greek word for “dissolve or break apart” is:1 soma lys lipo vacuus 9. What important job does the lysosome do?1 Stores fats and protein molecules. Breaks down proteins, starches and fats so their parts can be recycled. Builds cell membranes. Transports things across the cell. 10. When a cell needs a bag to store or transport something, it uses a:1 phospholipid vesicle lysosome zipper-lock baggie 11. An empty phospholipid sphere is called a:1 vesicle liposome lysosome membrane 12. As a general rule, can an enzyme do more than one job?1 Yes No 13. An acid donates what to its environment?1 electrons hydroxide ions protons 14. What geometric shape will phospholipids automatically form when put into a polar substance?1 circle long line flat sheet sphere 15. How many different types of digestive enzymes might be in a lysosome?1 3 only one 8 50 4: Lipids (part 2: Phospholipids) 6: Membranes (part 2: Membrane Transport) Back to: 5: Membranes (part 1)
