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CLEP Biology Practice Test
Multiple Choice
CLEP Biology
Multiple Choice Practice Test
Question 1 of 3
64% Get this Question Right
Which of the following fixes nitrogen?
A
Anabaena
B
Nostoc
C
All of these
D
Azotobacter
E
Calothrix
Azotobacter, anabaena, nostoc and calothrix are free living nitrogen fixing bacteria. Azotobacter can be found in the soil. Anabaena, nostoc and calothrixlives in water as well as on moist rocks.
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