SCI 200--Unit 1-Challenge 1 Questions and Answers 100% Correct

Alexander Fleming made a great discovery in the 1920s. While cleaning some glass plates upon which he had been growing bacteria, he noticed one plate had grown mold and the bacteria was gone.Which of the following activities corresponds with the conclusion step of the scientific method? Fleming hypothesizes that if bacteria are exposed to a certain kind of mold, the bacteria will die. b.) Fleming wonders if there is a causal relationship between the mold and the disappearance of the bacteria. c.) Fleming determines that penicillin (from mold) can be used to treat bacterial infections. d.) Fleming introduces liquid mold to some bacteria cultures and no mold to others. c.) Fleming determines that penicillin (from mold) can be used to treat bacterial infections. Francesco Redi from the 1600s observed clusters of flies around pieces of hanging meat.Which of the following activities corresponds with the testing step of the scientific method? a.) Redi exposes some meat to the air and places other meat in sealed containers.