One of the most common 2020 practicals involved placing onion epidermal cells or potato strips into salt/sugar solutions of varying concentrations.
: In biological explanations, avoid vague terms like "help" or "facilitate". Instead, be precise about the impact of a variable (e.g., "increases the rate of reaction"). o level biology practical 2020 answers
Confusing "surface area" with "volume" when explaining why smaller tissue pieces reacted faster. One of the most common 2020 practicals involved
While exam boards keep official 2020 practical papers under strict control (especially the confidential lab sheets), the follow a predictable pattern. Below, I break down the most common 2020 practical questions and give you the model answers that examiners actually wanted. the follow a predictable pattern. Below
Reviewing past papers like the 2020 practical highlights exactly what CIE and SEAB examiners prioritize: