Question

gels for \test brains\ did you know that every thought you have comes from an electrical charge in your brain? brains work by conducting electricity along pathways. if a brain is injured or damaged, these pathways can be healed. to learn how to heal brains, scientists would need access to either 1) lots of live brains, or 2) some kind of brain - like chemical substitute. in this task, you will figure out how one cutting - edge brain substitute works using what you have learned in this unit. conducting gels are substances that scientists use to mimic the structure of the brain and other body tissue that conduct electricity. in other words, these substances can serve as a \test brain\ by allowing charge to flow through them like a real brain. this allows scientists to safely develop new medical devices without having to test them on actual brains. the conducting gel is made of gelatin, or some similar substance, and dissolved sodium chloride (nacl) salt. the amount of nacl dissolved into the conducting gel affects how well it conducts electricity. the graph shows the relationship between the conductivity of the gel and the amount of nacl dissolved. scientists conducted the tests on the gel when it was at body temperature to better mimic what would happen in living tissue. impact of nacl concentration on the conductivity of conducting gel (measured at body temperature) (ganttata et al. (2012)) question 4: according to the graph, what relationship is there between the amount of nacl in the conducting gel and the level of conductivity? use the appropriate vocabulary words.

Explanation:

By observing the graph, as the NaCl concentration (mg/mL) increases from approximately 0.00 to 0.75, the conductivity (S/m) also increases. This indicates a positive correlation between the amount of NaCl in the conducting - gel and the level of conductivity.

Answer:

There is a positive correlation between the amount of NaCl in the conducting gel and the level of conductivity.