Cyanobacteria capable of fixing atmospheric N2 always produce heterocysts.
Answer the following statement true (T) or false (F)
False
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The main goal of sustainable development is to _____
A) involve more countries in conservation efforts B) use only natural resources in the construction of new buildings C) use natural resources such that they do not decline over time D) reevaluating and re-implementing management plans over time
What is the function of white blood cell granules, which are present in eosinophils, neutrophils, basophils, and mast
cells?
a. to phagocytize pathogens and cellular debris b. to release cytokines, digestive enzymes, and toxins that kill parasites c. to activate killer T cells d. to develop into dendritic cells that phagocytize pathogens e. to act as memory cells for B lymphocytes
In terms of the number of species, the most successful class of arthropods is
A. Hexapoda. B. Chelicerata. C. Myriapoda. D. Chilopoda. E. Crustacea.
Research has shown that certain body cells, known as stem cells, can develop into a variety of specialized cells. Various factors can cause stem cells to develop into different types of mature cells. These different types of mature cells result from
A. different antibodies and mitotic cell division B. identical genetic codes and meiotic cell division C. different environments of the cells and the functioning of different parts of the genetic code D. similar steps in the development of the cells and a reduction in the number of chromosomes in each cell