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Biotechnology
‣
Nitrogen Fixation and Photosynthesis
Comments
Question
What is the metal ligand in chlorophylls?
Options
A. Copper (Cu)
B. Iron (Fe)
C. Magnesium (Mg)
D. Manganese (Mn)
Correct Answer
Magnesium (Mg)
Nitrogen Fixation and Photosynthesis problems
Search Results
1. 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
2. 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
3. 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
4. Gypsum is beneficial for
Options
A. phosphorus enriched soil
B. water logged soil
C. alkaline soil
D. saline soil
Show Answer
Scratch Pad
Discuss
Correct Answer: alkaline soil
5. Archaeabacteria differ from the true bacteria as they have
Options
A. different cell membrane lipids
B. cell wall composition
C. ribosomal RNA structure
D. growth not inhibited by antibiotics
Show Answer
Scratch Pad
Discuss
Correct Answer: cell wall composition
6. 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
7. 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
Show Answer
Scratch Pad
Discuss
Correct Answer: 18 ATP
8. Which of the following bacteria genus is capable of oxidizing ammonia (NH
4
)?
Options
A. Nitrospina
B. Nitrobacter
C. Nitrosococcus
D. Nitrosobacter
Show Answer
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Discuss
Correct Answer: Nitrosococcus
9. Chlorophyll is associated with
Options
A. thylakoids
B. stroma
C. cristae
D. matrix
Show Answer
Scratch Pad
Discuss
Correct Answer: thylakoids
10. 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
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