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Which of the following bacterium is prominently known to contain bacteriorhodopsin?

Which of the following bacterium is prominently known to contain bacteriorhodopsin? Correct Answer Halobacterium salinarum

Halobacterium salinarum is the bacterium that is prominently known to contain bacteriorhodopsin. It is a halophilic archaebacterium. It is a salt-loving bacterium and it grows best in 4.3 M NaCl.

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The expression of bacteriorhodopsin is especially shown by which of the following organisms?
Which of the following is true for bacteriorhodopsin?
Which of the light powers the pumping of the protons across the membrane via bacteriorhodopsin?
Consider the following statements.
1. All valid arguments contain only true premises and a true conclusion.
2. Some valid arguments contain only false propositions - false premises and a true conclusion.
3. All valid arguments contain only false propositions all premises are false, conclusion is false as well.
Which of the above statements is correct?
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How many transmembrane segments are present in the structure of bacteriorhodopsin?
What is the absorption maximum of bacteriorhodopsin?
The function of rhodopsin and bacteriorhodopsin is the same.