A student was studying a prepared slide of human cheek cells under a compound light microscope. The diagram represents what the student observed on the slide at a magnification of 100×. Identify the shaded structure shown in each cell in the diagram.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final