What is the structure in the cell that controls all of the cells activities

Study the diagram of a desert food chain . what would most likely happen if the kangaroo rats were killed off and removed from the food chain ?

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

If your blood becomes too concentrated with iona, what will happen to the red blood cells