Formative Practice 3.4 (Form 4 Biology Textbook Exercise and Answer)
Question 1:Explain why green chillies are preserved using vinegar and sugar. Answer:The concentrated sugar solution is hypertonic to the cell sap of chili. Water diffuses out of the chili via osmosis. The chilli undergoes dehydration. Bacteria is unable to survive without water. Thus, pickled green chili can be kept for a long time.Vinegar reduces pH. … Read more