5: Membranes (part 1) Quizellenjmchenry2022-11-23T13:48:56-05:00 Please sign up for the course before taking this quiz. What geometric shape will phospholipids automatically form when put into a polar substance?1 circle sphere long line flat sheet An empty phospholipid sphere is called a:1 lysosome liposome vesicle membrane What is the electrical charge of a phosphate ion?1 1+ 3- 1- 3+ How many different types of digestive enzymes might be in a lysosome?1 3 8 50 only one An acid donates what to its environment?1 electrons protons hydroxide ions A lipsome that is filled with water or air is called a:1 lysosome vesicle vacuole membrane As a general rule, can an enzyme do more than one job?1 No Yes Which part of a phospholipid molecule loves water– the head or the tails?1 head neither tails both REVIEW: Is water polar or non-polar?1 non-polar neither polar When a cell needs a bag to store or transport something, it uses a:1 vesicle phospholipid zipper-lock baggie lysosome What important job does the lysosome do?1 Breaks down proteins, starches and fats so their parts can be recycled. Transports things across the cell. Stores fats and protein molecules. Builds cell membranes. REVIEW: A glycerol hanger with three fatty acids attached is called a:1 phospholipid triglyderide hydrophobic tail saturated fat The Greek word for “dissolve or break apart” is:1 lys soma lipo vacuus What is the inside of a lysosome like?1 acidic salty neutral basic (alkaline) REVIEW: What does hydrophilic mean?1 water loving water hating 4: Lipids (part 2: Phospholipids) 6: Membranes (part 2: Membrane Transport) Back to: 5: Membranes (part 1)
