List the four organ systems which are operational in a amoeba
respiration
digestion
muscular
reproduction
excretion
nervous
skeletal

The chemical form of energy that is useable by the cell to do work

Several billion years ago which gas was the least prevailant in the atmosphere

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.