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