Under almost all circumstances, brain cells can only use carbohydrates for energy. under almost all circumstances, brain cells can only use carbohydrates for energy.
a. true
b. false

True, fatty acids arent able to get to the brain cells because of the blood braid barrier,, ketone bodies produced by the liver are the only other energy sources, though they arent nearly as proficient.

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )