Each answer box represents a mechanism by which eukaryotes can regulate gene expression. determine which of the five mechanisms each example represents. not all examples will be used.

Information from outside the cell, the proteins cell inherits from mother cell if it is DNA is damaged and what amount of ATP it has. This is an example of gene expression. Information from outside the cell, its chemical which signals from other cells. The mechanical signal from nutrients levels is an extracellular matrix. A good example is a growth factor, chemical signal instructs target cell to divide and grow.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: