In which part of the nitrogen cycle do microorganisms participate?
A. Nitrogen fixation
B. Nitrification
C. Ammonification
Denitrification
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Which of the following fits the description “Use Carbon Dioxide as carbon source; use simple inorganic chemicals as energy source”?
A. Photoautotroph
B. Chemoautotroph
C. Photoheterotroph
D. Chemoheterotroph
Which of the following can be biomes?
A. Grassland
B. Mountain
C. Tropical rain forest
Desert
Which of the listing molecules have the protease activity?
A. C1q
B. C1r
C1s
D. C2a
E. C4b
Factor D
Which of the listing molecules participate in lectin pathway of complement activation?
A. C1q
B. Factor B
C. MASP-1
D. C3
E. C4
F. C9