The process of osmosis practice exercise 3

Question 1

A student places slices of raw carrot into a bowl of salty water. After one hour, the carrot slices become soft and flexible. Explain why this happened and how osmosis is involved. (2 marks)

Question 2

During an experiment, a student places red blood cells in pure water. After a few minutes, the cells burst. Explain why this happened using the concept of osmosis. (2 marks)

Question 3

During a science experiment, students placed peeled grapes into two separate beakers — one containing distilled water and the other a concentrated sugar solution. After two hours, one set of grapes appeared swollen while the other looked wrinkled. Explain why these changes occurred and identify which beaker each set of grapes was in. (2 marks)

Question 4

Two identical root hair cells are placed in different solutions. Cell A is in plain tap water. Cell B is in salty water. After 30 minutes, Cell A appears firm while Cell B appears collapsed. Explain what happened in both cells and relate it to their environment using the concept of osmosis. (2 marks)

Question 5

A farmer notices that the leaves of her vegetable plants are wilting during a drought. She waters them with a solution of fertilizer mixed in water. The next day, the wilting worsens. Using your knowledge of osmosis, explain why this happened. (2 marks)

Question 6

A teacher cut two identical potato chips and placed one in salt water and the other in distilled water. After an hour, one was stiff and the other was floppy. Which chip was in salt water and why? (2 marks)

Question 7

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

Question 8

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

Question 9

The diagram below shows two plant cells: one turgid and one plasmolysed. Explain the difference between the two cells and describe the type of solution(distilled water or concentrated sugar solution) each was placed in to cause the observed changes. (2 marks)

Question 10