Why can oxygen pass through the cell membrane by simple diffusion

Which organelle breaks down sugar molecules that supply energy to the cell ?

How does the human body lever work?

Which contributions did galileo make to the model of the solar system? check all that apply. a mathematical model for the orbits of the planets scientifically accurate data on planetary orbits data that showed that planets reflected sunlight similar to earth's moon up the idea that stars are other suns that do not move u observations of the moons of jupiter rotating around the gas giant