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taurus [48]
3 years ago
15

How do scientists know dark matter exists?

Biology
1 answer:
Bumek [7]3 years ago
3 0

Answer:

maybe 2nd one is correct

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The involvement of ATP in the nitrogenase complex is because ATP is needed to: a. provide electrons. b. phosphorylate the enzyme
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Answer:

c. break the N2 triple bond.  

Explanation:

In the general nitrogen reduction reaction (which occurs in the nitrogenase complex), ferredoxin acts as an electron donor to Fe-protein, which in turn hydrolyzes ATP and reduces MoFe-protein. By reducing MoFe-protein one can then reduce numerous (triple bonded) substrates although, under natural conditions, it reacts only to N2 and H +.

That is, ATP must be present in the reaction so that MoFe-protein can break the triple bond N2.

The binding and hydrolysis of ATP to Fe-protein causes a change in conformation of this protein which facilitates redox reactions. The enzymatic reduction of N2 by nitrogenase requires a large energy investment, although the exact changes in free energy are still unknown.

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3 years ago
Which best illustrates how Gregor Mendel used creativity that lead to scientific discovery?O He noticed that traits were passed
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