Exam (elaborations)
AQA A Level Biology 4/5/6 mark questions (2022/2023) (Certified Answers)
- Course
- Institution
Many different substances enter and leave a cell by crossing its cell surface membrane. Describe how substances can cross a cell surface membrane. (5) 1 (Simple / facilitated) diffusion from high to low concentration / down concentration gradient; 2 Small / non-polar / lipid-soluble molecules p...
[Show more]