What would happen if most of earth’s surface suddenly became covered with ice?

What are the types of mutations, and how does each alter the encoded protein? college level answer

The carrier molecules of the electron transport system are located in the

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.