Answer:
The statement is true because most organisms are made of water, and water consists of mostly hydrogen (atoms) since its chemical formula is H2O.
Answer:
The correct option is D. Chemoautotroph uses CO2 for carbon and H2 for energy.
Explanation:
Autotrophs can be described as organisms that are capable of making their own food. There are two types of autotrophs: photoautotrophs which use energy from the sunlight to produce food and chemoautotrophs have the ability to make biological compounds from inorganic matter.
The chemoautotrophs are capable of taking carbon from inorganic sources and converting them into useful organic compounds. They are also capable of taking hydrogen atoms and use them for deriving energy. Hence, D is the correct answer.
C) DNA or protein sequences of shared genes.
Answer: a cell membrane
Explanation: But remember that bacteria do have their DNA inside their protein envelope. They don’t have a nucleus, but they do have DNA making them also have the ability to reproduce.
It reacts with water to produce carbonic acid.
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