{"id":272,"date":"2022-12-24T21:55:29","date_gmt":"2022-12-24T21:55:29","guid":{"rendered":"https:\/\/chinesebay.com\/sf\/mrs-pfahnls-bio-a-lab-osmosis\/"},"modified":"2022-12-24T21:55:29","modified_gmt":"2022-12-24T21:55:29","slug":"mrs-pfahnls-bio-a-lab-osmosis","status":"publish","type":"post","link":"https:\/\/chinesebay.com\/sf\/mrs-pfahnls-bio-a-lab-osmosis\/","title":{"rendered":"Mrs. Pfahnl\u2019s Bio A Lab: Osmosis"},"content":{"rendered":"

Mrs. Pfahnl\u2019s Bio A Lab: Osmosis\n <\/p>\n

Osmosis is a passive transportation of water molecules through semipermeable cell membrane.<\/span><\/p>\n

The purpose of the experiment is to investigate the different salt levels affects the intake or output of the water molecules of plant cells.<\/span>\n <\/p>\n

Materials:<\/span>
1. Four narrow cups which can at least hold one cup of water<\/span><\/p>\n

2. Measure cup of 1 cup, half a teaspoon, 1 teaspoon<\/span>
3. Two Large (white, yellow or sweet) potatoes at least 2 inches long<\/span>
4. Table salt<\/span>
5. Cutting knife and cutting board<\/span>
6. Gloves to protect your hands<\/span>
7. Ruler<\/span>
Procedures:<\/span><\/p>\n

1. Label the 4 cups 1, 2, 3, 4<\/span>
2. Add \u00bd tsp salt in cup 2<\/span>
3. Add 1 tsp salt in cup 3<\/span>
4. Add 2 tsp salt in cup 4<\/span>
5. Add 1 cup of water to every cup<\/span>
6. Mix salt with water by stirring with a spoon in the order of cup 2, 3 and 4<\/span>
7. Cut one potato in half along the length<\/span>
8. Cut into about 1 cm thickness<\/span>
9. Cut into 1 cm strips<\/span>
10. Cut the ends of the strips to 6 cm long<\/span>
11. Put 3 strips in each cup<\/span>
12. Measure length at \u00bdh, 1h, 2h, 4h, 24h<\/span>\n <\/p>\n

Results:
\n 1. Take pictures (34% grade)<\/span><\/p>\n

2. Collect data and Make a graph (33% grade)<\/span><\/p>\n

3. Present in Flipgrid (33% grade)<\/span><\/p>\n

<\/div>
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