Where does the energy come from in a nuclear fission reaction?

Describe the function of the endomembrane system? what organelles are involved?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.