Negative ion <span>occurs when an atom gains an electron (negative charge) it will have more electrons than protons.</span>
Answer:
i thing it's b or c
Explanation: the earliest bacteria didn't need oxygen at first.and not all living things create the same proteins. it matters on what kingdom and species it is from.
The answer is; E
This shows that these organelles were once free-living organisms with their own mechanisms for reproduction which they have retained even after years of symbiotic relationship with the higher organisms. During their duplication, they also replicate their own DNA. Their DNA does not have histones (as opposed to the DNA in the nucleus of their host eukaryotic cell) similar to that of simple organisms such as bacteria.
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