#Question id: 10363
#Unit 6. System Physiology – Plant
Free living nitrogen fixing takes place as shown in the following;
TYPE
N-FIXING GENERA
A)
Cyanobacteria (blue-green algae) i)
Bacillus
B)
Aerobic
ii)
Clostridium
C)
Facultative
iii) Anabaena
D)
Anaerobic nonphotosynthetic iv)
Rhodospirillum
E)
Anaerobic photosynthetic
v) Azospirillum
#Question id: 10365
#Unit 6. System Physiology – Plant
Why the nitrogenase enzymes catalyzes the nitrogen fixation reaction only in microanaerobic or anaerobic conditions?
#Question id: 10366
#Unit 6. System Physiology – Plant
Cyanobacteria can fixes nitrogen in an anaerobic conditions. Which of the following statements about heterocyst which is specialized cell of blue-green algae is incorrect?
#Question id: 10367
#Unit 6. System Physiology – Plant
Cyanobcteria also fixes nitrogen under anaerobic conditions without heterocyst where?
#Question id: 10368
#Unit 6. System Physiology – Plant
Free-living bacteria that are capable of fixing nitrogen are aerobic, facultative, or anaerobic. Some of the Aerobic nitrogen-fixing bacteria such as
#Question id: 10369
#Unit 6. System Physiology – Plant
Which type of the nitrogen-fixing bacteria are thought to maintain a low oxygen concentration (microaerobic conditions) through their high levels of respiration