The arthropod-borne (dengue/Rubeola/Zika) virus can cause serious congenital defects if infection occurs during pregnancy.
Fill in the blank(s) with the appropriate word(s).
Zika
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An intestinal protozoan appeared 8 µm in diameter with a small, compact, centrally located karyosome. Four nuclei were observed in the mature cyst. The organism can be identified as:
a. E. histolytica. b. E. dispar. c. E. hartmanni. d. E. coli.
Which of the following are typically used as vectors?
a. plasmids b. viruses c. insulins d. both plasmids and viruses
Familial hypercholesterolemia is characterized by _____
A) defective LDL receptors on the cell membranes B) poor attachment of the cholesterol to the extracellular matrix of cells C) a poorly formed lipid bilayer that cannot incorporate cholesterol into cell membranes D) inhibition of the cholesterol active transport system in red blood cells
Sulfur has an atomic number of 16. How many covalent bonds can sulfur form?
A) 1 B) 2 C) 4 D) 0