Which organelle generates most of the energy the cell needs to function and stay alive?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Which of the following is an example of motion in two dimensions?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.