B cells develop and mature in the:
What will be an ideal response?
bone marrow
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Which of the following is produced during alcoholic fermentation?
a. CO 2 b. water c. lactate d. FADH
The 1992 plan of the European Union calls for
a. the complete mobility of economic resources across EU borders. b. establishing the British pound as the common currency. c. a central banking system in Zurich. d. a federal tax system similar to that of the United States.
Which group of animals has one-way flow of air through its lungs, whereas all the others have tidal flow?
A. mammals B. amphibians C. birds D. reptiles
Members of the lineage ____ are mostly freshwater parasites. Called leeches, they are dorsoventrally
flattened and do not have septa.
a. Hirudinea b. Polychaeta c. Monogenoidea d. Cestoda e. Oligochaeta