¿que tipo de células son las responsables de que no volvamos a padecer algunas enfermedades que ya hemos padecido ?

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.

Describe characteristics of a good respitory surface