The oldest fossil found aged around 3.4 billion years ago, this fossil is said to be without nucleus and measures about 5 to 25 micrometers in diameter. Given that time with low level of Oxygen gas, this organism may not require Oxygen in order to survive. What kind of organism is this?

This is the process used by prokaryotic cells wherein they produce energy by stripping the electron from mineral

Over many years, cell growth and sediment deposition formed dome-shape, layered structure called stromatolites. It is said that this organism uses photosynthesis resulting oxygen to accumulate in the air and water. How can you prove that this organism uses photosynthesis based on the statement?

The scientist that conducted an experiment to test the idea of spontaneous generation that a vital component from air was necessary for life to exist.?

In doing his experiment that is related spontaneous generation, this scientist did not practice aseptic technique?

Which among the following scientist formulated the “Germ Theory” after doing the experiment to disproved spontaneous generation?

Which among the following scientist conducted an experimentation using an aseptic method boiled a broth which contain meat and vegetables placed in a clean glass container, now both containers were boiled but one set-up was not sealed, allowing air to enter the flask, which had disproved the theory of spontaneous generations?

A systematic, scientific and schematic theoretical frameworks which attempts to explain natural phenomenon, it tries to explains certain events and natural process which happens in the natural world.