Question

Nitrogen fixation (conversion of N2 to NH4+):

requires the nitrogenase complex.

Group of answer choices

True

False

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Question 1311 pts

Nitrogen fixation (conversion of N2 to NH4+):

requires at least 12 ATP per N2 fixed.

Group of answer choices

True

False

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Question 1321 pts

Nitrogen fixation (conversion of N2 to NH4+):

requires a powerful reductant.

Group of answer choices

True

False

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Question 1331 pts

Nitrogen fixation (conversion of N2 to NH4+):

requires the participation of CO2.

Group of answer choices

True

False

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Question 1341 pts

For mammals, some amino acids are essential in the diet, whereas others may be formed from dietary components. Humans are capable of converting:

pyruvate to alanine.

Group of answer choices

True

False

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Question 1351 pts

For mammals, some amino acids are essential in the diet, whereas others may be formed from dietary components. Humans are capable of converting:

aspartic acid into isoleucine.

Group of answer choices

True

False

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Question 1361 pts

For mammals, some amino acids are essential in the diet, whereas others may be formed from dietary components. Humans are capable of converting:

oxaloacetate to aspartic acid.

Group of answer choices

True

False

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Question 1371 pts

The urea cycle:

supplies the bodily requirement for arginine in adults.

Group of answer choices

True

False

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Question 1381 pts

The urea cycle:

converts urea into uric acid.

Group of answer choices

True

False

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Question 1391 pts

The urea cycle:

converts ammonia into urea.

Group of answer choices

True

False

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Question 1401 pts

The urea cycle:

acts as an energy-supplying mechanism by oxidizing waste materials.

true or false

Answer 1

Answer :- nitrogen fixation ( conversion of N2 to NH4+) require the nitrogenase complex is true ​​​​

Explanation :-

The enzyme, nitrogenase which is capable of nitrogen reduction is present exclusively in prokaryotes.

Example :- azotobacter, cyanobacteria, nostoc

Such microbes are called N2-fixers.

The enzyme nitrogenase is a Mo - Fe protein and catalyses the conversion of atmospheric nitrogen to ammonia.

The ammonia is frist stable product of nitrogen fixation.

At the physiological pH, the ammonia is protonated to form NH4+ ( ammonium) ion.

Answer 1311:- false

During nitrogen fixation, the nitrogenase enzyme requires a very high input of energy { 16 ATP for each N2 fixation}

N₂ + 8 e + 8 H+ + 16 ATP 2NH₂ + H₂ + 16 ADP + 16 Pi Energy requires for I Ny fixation is 16 ATP

Answer 1321 :- true

During nitrogen fixation nitrogen convert into ammonia. Between the nitogen ( N2 ​​​​​​) molecule triple bond is present, so breakdown of these bond requirement of high energy and powerful reductant to reduce atmospheric nitrogen to ammonia.

Answer 1331 :- false

No CO2 involve in nitrogen fixation. But in latest research became known the CO2 can increase nitrogen fixation but not involve in this fixation cycle.