B3 Revision Posters. B3a – Molecules of Life Controls movement in & out of cell Chemical reactions take place here – e.g. enzymes Site of respiration.
Life in the Cosmos: Jan 2006 Life on Earth. Biology may be common in the Universe Evidence that organic molecules form easily and naturally Evidence that.
Cells
بسم الله الرحمن الرحيم
These structures are called Organelles.....they actually do work for the cell, by carrying out life functions.
