Just say we have a big amount of tryptophan in the sense that it exceeds, tryptophan would act as a co-repressor which prevents synthesis of more enzymes for its production
Hope this helps :)
Precipitation and temperature
Drugs and other chemicals are examples of how environmental factors affect gene expression. These drugs can either 'activate' or 'inhibit' the expression of genes that you have. For example, taking drugs while being pregnant affects the genetic makeup of the baby inside you.
Answer:
Osmosis:The movement of solute across a semi-permeable membrane
Cell membrane:It is a semi-permeable allowing the movement of water and nutrients to move in and out of the cell.
