Why one strand of dna used to make mrna?

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

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere