Answer: The electron transport chain is a group of proteins found in the inner membrane of the mitochondria of a eukaryotic cell. ... Using electrons, hydrogen ions, NADH, ADP, and oxygen, the electron transport chain is able to make energy in the form of ATP.
E.Coli belongs to the eubacteria kingdom. E. Coli also belongs to the bacteria domain, the proteobacteria, and the coli species.
The cell wall causes them to have different shapes because it’s flexible.
The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they called a "double helix," in the journal Nature.
Once you understand this, its pretty simple. 50 hertz= 50 vibrations. 100 hertz=100 vibration. So to answer your question 200 hertz=200 vibrations. Your answer is C.