8 of 188 of 18 Items 07:10 Question Egg Osmosis Solution (to remove shell) Egg mass (g) Initial Egg mass (g) after 24 hrs Student Observations Vinegar (Egg 1) 45 85 Shell gone; egg seemed swollen and larger Vinegar (Egg 2) 45 85 Shell gone; egg seemed swollen and larger Vinegar (Egg 3) 45 85 Shell gone; egg seemed swollen and larger Experimental Solution Egg mass (g) Initial Egg mass (g) after 24 hrs Student Observations 10% Salt Water Solution (Egg 1) 85 85 No change in egg appearance or size Kayro Syrup (Egg 2) 85 31 Egg was wrinkled and shriveled; much smaller Distilled Water (Egg 3) 85 105 Egg was larger in size; swollen and tight Introduction: Students performed an experiment using eggs to observe the effect of osmosis on cells. The egg represented a typical cell. Before beginning the experiment, students soaked the raw eggs overnight in vinegar to remove the shells. What they had in hand, then, was actually a raw, shell-less egg. Procedure: Day 1 – Students found the mass in grams of their shelled eggs, recording the mass in the data table. The eggs were placed in a beaker and covered with 200 mL vinegar to remove the shells. Day 2 – The eggs were removed from the vinegar. Visual observations were recorded. The shell-less eggs were wiped dry, massed, and the mass was recorded in the data table. The eggs were placed in a clean beaker and covered with a 10% saltwater solution. Day 3 – The eggs were removed from the saltwater and visual observations were made and recorded. The eggs were wiped dry , massed, and the mass was recorded. The eggs were placed in a clean beaker and covered with sugar (Kayro) syrup. Day 4 – The eggs were removed from the syrup and visual observations were made and recorded. The eggs were carefully wiped with a damp cloth, massed, and the mass was recorded. The eggs were placed in a clean beaker and covered with colored (red, green, or blue) distilled water. Day 5 – The eggs were removed from the water and visual observations were made and recorded. The eggs were dried, massed, and the mass was recorded. Students organized their data and made a bar graph comparing how the solutions affected their egg's (cell’s) mass. Data: One student group’s data is recorded here. Based on the data in the table, the students can conclude that which substance is hypertonic? Responses A vinegarvinegar B salt watersalt water C Kayro syrupKayro syrup D distilled waterdistilled water Skip to navigation
1 answer
1 answer