Which of the following organisms is a chemoautotroph? O Escherichia col Sulfolob

Question

Which of the following organisms is a chemoautotroph? O Escherichia col Sulfolobus solfataricus Haloferax volcanii Rhodospinillum rubrum QUESTION 2 What is the source of electrons for this chemoautotroph? Oxygen Nitrogen Sulfur Water QUESTION 3 Chemoautotrophs cannot make use of an electron transport chain True False QUESTION 4 Metabolism requires enesgy from light or from the CATABOLISM of acquired nutrients True Click Save and Subemit to save and submit. Click Saue All Answers to save all ansavers search FD F6 5

Explanation / Answer

1) Rhodospirillum rubrum.

A chemoautotroph is an organism that creates its own organic food from inorganic chemicals.

2) Sulfur,Nitrogen.

Chemoautotroph are organisms that obtain energy by the oxidation of electron donors in their environments.They use inorganic energy sources such as hydrogen sulfide, elemental sulfur, ferrous iron, molecular hydrogen, and ammonia.

3) True.

Chemoautotroph  use electron donors oxidized in the cell, and channel electrons into respiratory chains, producing ATP.

4) True.

Chemoautotrophs generally fall into several groups: methanogens, halophiles, sulfur oxidizers and reducers, nitrifiers, anammox bacteria, and thermoacidophiles.

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