Question 1 of 10 It takes a person 42 seconds to swim in a straight line from the west end of a
pool to the east end of the pool, a distance of 45 meters. What is the
swimmer's velocity?
O A. 0.9 m/s east
O B. 1.1 m/s west
O C. 0.9 m/s west
O D. 1.1 m/s east

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.