Examlex
In addition to chloroplasts, which of the following organelles of eukaryotic cells is believed to have originated by endosymbiosis?
Hydrogen
A colorless, odorless, tasteless, and highly flammable diatomic gas that is the simplest and lightest element, often used in chemical reactions and as a potential clean energy source.
Oxygen
A chemical element with symbol O and atomic number 8, essential for most forms of life and a critical component of the Earth's atmosphere.
Water
A transparent, odorless, tasteless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans.
Transportation Cost
The expenses incurred in moving goods or individuals from one location to another, including fuel, labor, and maintenance.
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