Answer:
Nucleus: an organelle that is in most eukaryotic cells that contains genetic material for the organism
Ribosome: particles consisting of RNA and proteins that perform protein synthesis
Endoplasmic Reticulum: a network of membranous tubules within the cytoplasm that has ribosomes connected to them, involved in protein and lipid synthesis
Golgi Apparatus: a complex of vesicles and folded membranes within the cytoplasm, involved in secretion and intracellular transport
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Answer
Bacteria that obtain its carbon from carbon dioxide (inorganic source) and its energy from complex carbon is known as chemotherapeutic bacteria. and the type mention in the above statement is known as chemolithoautotrophs.
1 kilometer = 6.68 × 
(<<<AU is in scientific notation here)
To convert 300 billion kilometer (3,000,000,000 km) into AU you must multiply the kilometer by the equivalent of 1 km in AU (6.68 × )
3,000,000,000 × (6.68 × ) = 20.04 AU
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