Choose the bone or set of bones that belong to the appendicular portion of the human skeleton.
A. vertebral column
B. pelvic girdle
C. ribs
D. skull
Answer: B
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The attraction between Na+ cations and Cl? anions forms ____ that hold together the compound NaCl
a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds
cDNA is copied from
A) DNA. B) protein. C) mRNA. D) a pictogram.
Which description fits deuterostomes?
a. They undergo determinate cleavage, form a coelom by schizocoely, and develop a mouth near the blastopore. b. They undergo indeterminate cleavage, form a coelom by schizocoely, and develop an anus near the blastopore. c. They undergo indeterminate cleavage, form a coelom by enterocoely, and develop an anus near the blastopore. d. They undergo determinate cleavage, form a coelom by enterocoely, and develop a mouth near the blastopore.
The drug used for several protozoan infections is ________.
A. nystatin B. amphotericin B C. sulfa drugs D. metronidazole E. griseofulvin