Like a Summative Practice
Directions: these are possible test questions, so circle the best answer
1. Scientists are developing a microscopic submarine to deliver
medicine to sites within the body. A biomotor that uses bacteria
would move the submarine. The scientists are experimenting with
several species of bacteria to find which one works best in the
biomotor. Which of these is the dependent variable in the
scientists' experiment?
A. the species of bacteria
B. the movement of the submarine
C. the size of the submarine
D. the sites within the body