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

Biology & Microbiology

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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).

Biology & Microbiology

Many antibodies are shaped like the letter

a. C. b. E. c. H. d. K. e. Y.

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology