SCI 200--Unit 1-Challenge 1 Questions And Answers With Complete Solution Rated

SCI 200--Unit 1-Challenge 1 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. b.) Redi wonders if rotting meat turns into or produces flies. c.) Redi hypothesizes that rotting meat cannot produce flies; only flies can produce flies. d.) Redi determines that flies lay eggs on meat which turn into maggots, which turn into flies. a.) Redi exposes some meat to the air and places other meat in sealed containers. In the late 1700s Edward Jenner used the scientific method to make a great discovery concerning the relationship between humans and disease. All vaccines created since then have been a result of his work.Which of the following of Jenner's activities corresponds with the question formulation step of the scientific method? a.) Jenner wonders why people who have had cowpox do not seem to be vulnerable to smallpox. b.) Jenner hypothesizes that a person infected with cowpox will not become ill with smallpox. c.) Jenner determines that infecting a person with cowpox protects that person from getting smallpox. d.) Jenner infects a person with cowpox and then infects that person with smallpox. a.) Jenner wonders why people who have had cowpox do not seem to be vulnerable to smallpox. Which of the following is a biotic element in this image?