the flap the covers the opening to the lungs during swallowing is the
What will be an ideal response?
epiglottis
Biology & Microbiology
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In class switching in the secondary antibody response, the most common antibody switch is from
A) IgA to IgD. B) IgD to IgE. C) IgM to IgG. D) None of the answers are correct.
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Which of the following enzymes relieves the strain in DNA introduced by unwinding in E. coli?
A. gyrase B. ligase C. primase D. helicase E. SSB
Biology & Microbiology
The pelagic division of the ocean consists of the:
a. ocean bottom. b. lit area of the ocean. c. dark area of the ocean. d. water column. e. intertidal zone.
Biology & Microbiology
Multiple sclerosis (MS) is an autoimmune disorder in which white blood cells destroy the myelin sheaths of ________
a. astrocytes b. ependymal cells c. oligodendrocytes d. microglia
Biology & Microbiology