#Question id: 11689
#Unit 7. System Physiology – Animal
When do progesterone levels rise to their highest point during the female hormonal cycle?
#Question id: 11501
#Unit 9. Diversity of Life Forms
According to the endosymbiotic theory of the origin of eukaryotic cells, how did mitochondria originate?
#Question id: 2840
#Unit 2. Cellular Organization
An experimental setup provided the assay for identifying factors that facilitate transcription in the presence of chromatin. A factor called FACT (facilitates chromatin transcription) functions as
#Question id: 20322
#Unit 4. Cell Communication and Cell Signaling
#Question id: 10383
#Unit 6. System Physiology – Plant
The nitrogenase enzyme complex fixes N2 produces ammonia, The nitrogenase
enzyme complex catalyzes this reaction by following characteristics given
below;
a) It can be separated into two components—the Fe protein and the MoFe
protein— neither of which has catalytic activity by itself
b) Fe protein is the smaller of the two components and has two identical
subunits, each contains an iron–sulfur cluster, which participates in the redox
reactions
c) The Fe protein is irreversibly inactivated by O2 while MoFe protein is
activated by O2
d) MoFe protein has four subunits, each subunit has two Mo–Fe–S clusters
e) Ferredoxin serves as an electron donor to the Fe protein, and Fe
protein reduces the MoFe protein without any hydrolysing ATP
f) Only prokaryotes have nitrogenase enzyme
Which of the following characteristics of nitrogenase enzyme complex is incorrect?