The bacterium that causes cholera is capable of living independently in freshwater. As a consequence, cholera epidemics primarily involve (animal/non-living/zoonotic) reservoirs.
Fill in the blank(s) with the appropriate word(s).
non-living
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What is the function of the interstitial cells of Leydig?
a. separating lobules within the testes b. produce testosterone at adolescence c. protect germ cells during development d. transporting sperm cells to the prostate
A nucleotide is composed of at least one sugar, one phosphate group, and ____
a. one nitrogen-containing base b. one amino acid c. multiple cholesterol molecules d. fatty acid chains e. ATP
Which antibody confers the most important specific local immunity to enteric, respiratory, and genitourinary pathogens?
A. IgG B. IgE C. IgM D. IgD E. IgA
Hereditary material is found in the nucleus of the cell in elongated bodies called ___.
What will be an ideal response?