Why does water need a protein channel to move across the cell membrane?

Why is cell theory classified as theory and not a hypothesis

The living substance in a cell is called:

Which mutation would be most beneficial to a peacock and its descendents? A. a mutation in the plumage that results in a white peacock B. a mutation causing an overly curved beak C. a mutation causing blue eyes D.

Controls involuntary response

Which two elements have similar characteristics? Periodic Table OF The Elements

If I turn my computer off at least once a week, it will run faster. What is the independent variable? What is the dependent variable? What are some controlled variables?

Which process is a "build up" process

Volcanoes, lightning, and the combustion of fossil fuels ALL contribute to acid precipitation. true false

Does an electric current cause a coiled wire to become an electric bell

Which is a renewable resource? A) coal B) sunshine C) gasoline D) natural gas