PLEASE HELP A euglena is a unicellular organism. Explain how the euglena's cell parts help it stay alive. (at least 5 sentences)

Ecology can best be described as the study of what

To confirm when to exclude children from school it’s recommended that you refer to guidelines from which of the following organizations

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.