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