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The nitrogenase complex is extremely sensitive to inactivation by O2, so the enzyme must be protected from this reactive substance. During the root nodules of leguminous plants, protection is afforded by the symbiotic synthesis of leghemoglobin. The globin part of this monomeric oxygen-binding protein is synthesized by the plant, whereas the heme group is synthesized by the Rhizobium. Leghemoglobin has a very high affinity for O2 for maintaining a low enough concentration to protect the nitrogenase.
What are Pure Culture Techniques? Microorganisms can be isolated from various natural environments like soil, food, water, sewage, decomposing matter and even from infectious m
Define Physiological effects on the GIT of prebiotics? Since prebiotics are fermented by the gut microflora, they may have physiological effects on the GIT such as: Cont
What are cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure? Cnidocytes are specialized cells present in coel
How does the study of fossils strengthen the theory of evolution? The study of fossils reveals ancient and extinct species having many same structures to others of the present
#question.name any two plants having heterotrophic mode of nutrition .
A diploid cell contains: A.one half of a complete set of chromosomes B.several complete sets of chromosomes C.the correct number of chromosomes D.two complete sets of chromosomes E
Describe the structure of the stomach. How is it modified to carry out its functions? How does it compare to that of the fetal pig?
LOCOMOTION IN LEECH - Leech moves by looping action of its body on substratum. Posterior sucker is attached to base, body elongates, then anterior sucker is attached. Now po
Role of Private Sector in Health Care - Contracting The government can transfer some of its work to the private sector by contracting. If the cost of resultant services (inclu
biological significance of biology
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