Osmosis is the diffusion of water across a membrane. Active transport moves particles from low to higher concentration. Sample exam questions - key concepts in biology - Edexcel Understanding how ...

Try this quiz based on GCSE Biology past papers ... variation, data analysis, diffusion, pathogens, the menstrual cycle, eukaryotes, cardiovascular disease and antibiotic resistance.

The diffusion process is conditioned on a protein ... complexes could significantly improve the understanding of protein biology and assist in designing new therapeutic agents.