How to generate random numbers in excel without duplicates

is this a psat question, if so do not cheat try your best.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

50% lit on the left side

a compound light microscope is used to magnify objects in steps.  

hope it