PEARSON EDEXCEL A LEVEL BIOLOGY B PAPER 3 JUNE 2022 QUESTION PAPER (9BI0/03: General and Practical Principles in Biology)

PEARSON EDEXCEL A LEVEL BIOLOGY B PAPER 3 JUNE 2022 QUESTION PAPER (9BI0/03: General and Practical Principles in Biology). DOWNLOAD OFFICIAL AND VERIFIED EDEXCEL A LEVEL BIOLOGY PAPER 3 June 2022 on Hackedexams.com INSTANTLY. Answer ALL questions. Write your answers in the spaces provided. 1 Nerve impulses are transmitted along neurones. (a) (i) In the time period between two nerve impulses, the potential difference across the membrane is –70mV. State the term given to this potential di...