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Biotechnology
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Nitrogen Fixation and Photosynthesis
Comments
Question
During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately
Options
A. 12 ATP
B. 18 ATP
C. 25 ATP
D. 7 ATP
Correct Answer
18 ATP
Nitrogen Fixation and Photosynthesis problems
Search Results
1. Which of the following molecule is produced from the fixation of CO
2
in C4 plants?
Options
A. Malate
B. Oxaloacetate
C. Pyruvate
D. Alpha-ketoglutarate
Show Answer
Scratch Pad
Discuss
Correct Answer: Oxaloacetate
2. What is the metal ligand in chlorophylls?
Options
A. Copper (Cu)
B. Iron (Fe)
C. Magnesium (Mg)
D. Manganese (Mn)
Show Answer
Scratch Pad
Discuss
Correct Answer: Magnesium (Mg)
3. In the Calvin cycle of C3 plants, which molecule is the acceptor of CO
2
?
Options
A. Erythrose-4-phosphate
B. Ribulose-l,5-diphosphate
C. Ribose-5-phosphate
D. Alpha-ketoglutarate
Show Answer
Scratch Pad
Discuss
Correct Answer: Ribulose-l,5-diphosphate
4. A major plant macronutrient found in nucleic acids and proteins is
Options
A. calcium
B. nitrogen
C. sulphur
D. iron
Show Answer
Scratch Pad
Discuss
Correct Answer: nitrogen
5. Which of the following aid plants in the acquisition of nitrogen from nitrogen gas of the atmosphere?
Options
A. Bacteria
B. Algae
C. Nematodes
D. Moulds
Show Answer
Scratch Pad
Discuss
Correct Answer: Bacteria
6. Which of the following bacteria genus is capable of oxidizing ammonia (NH
4
)?
Options
A. Nitrospina
B. Nitrobacter
C. Nitrosococcus
D. Nitrosobacter
Show Answer
Scratch Pad
Discuss
Correct Answer: Nitrosococcus
7. Chlorophyll is associated with
Options
A. thylakoids
B. stroma
C. cristae
D. matrix
Show Answer
Scratch Pad
Discuss
Correct Answer: thylakoids
8. Organisms capable of converting N
2
to NO
3
are
Options
A. yeasts
B. bacteria
C. roundworms
D. moulds
Show Answer
Scratch Pad
Discuss
Correct Answer: bacteria
9. The chief source of nitrogen for green plants is
Options
A. atmospheric nitrogen
B. nitrates
C. ammonium salts
D. low molecular weight- organic nitrogenous compound
Show Answer
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Discuss
Correct Answer: nitrates
10. In the presence of carbon monoxide, nitrogen fixation
Options
A. increases
B. decreases
C. inhibits
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: inhibits
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