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