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