Which organism is a nitrogen-fixing symbiont of legumes?
A. Clostridium
B. Nitrobacter
C. Pseudomonas
D. Rhizobium
Answer: D
Biology & Microbiology
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On what foodstuff does the main enzyme in the
mouth act?
a. proteins b. fats c. carbohydrates d. fats and carbohydrates e. carbohydrates and proteins
Biology & Microbiology
One way two competing species can coexist in the same area is via
A) having the same competition coefficient. B) zero-growth isoclines. C) competitive exclusion. D) niche differentiation.
Biology & Microbiology
All of the following are components of nonspecific immunity EXCEPT
A. complement. B. B cells. C. skin. D. lysozyme. E. phagocytes.
Biology & Microbiology
What are the DNA repair functions and the modes of activity of glycosylases and methyltransferases?
What will be an ideal response?
Biology & Microbiology