An animal that is infected with a parasitic organism that can also infect humans is called a(n) ________ host.
A. transfer
B. reservoir
C. intermediate
D. endoparasitic
Answer: C
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________ and ________ are the two kinds of sugars found in bacterial cell walls.
Fill in the blank(s) with the appropriate word(s).
Many antibodies are shaped like the letter
a. C. b. E. c. H. d. K. e. Y.
Classification.Respond to the following statements in reference to the five animal phyla listed below.
A. This phylum has no tissues or organs. B. C. Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system. D. Tapeworms are members of this phylum. E. Members of this phylum have a pseudocoelomic cavity. F. Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed.
In water, MgCl2 dissociates into Mg2+ and Cl-. Based on this information what type of bond is involved in the formation of MgCl2?
A. polar covalent B. hydrogen C. nonpolar covalent D. electrostatic E. ionic