Which of the following was not believed to be present in the atmosphere of the early Earth? A. Ammonia B. Hydrogen c. Methane D. Water vapor E. Oxygen 25. Which statement is false about this molecule? A. this is a phospholipid B. these fatty acids are unsaturated c. oils made with this molecule would probably be liquid membranes are made of these compounds E. the long chains with the double bonds are hydrophilic D . The gram negative bacterium, Klebsiella pneumoniae, was fed with radioactive fatty acids. After 24 hours incubation, what part of the cell would you expect to be radioactive? A. cytoplasmic membrane B. golgi c. all mono-, di-, and triglycerides found in the cell DNA E. both A and C D.

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