The carrier protein that transports absorbed iron through the blood is ________.
Fill in the blank(s) with the appropriate word(s).
transferrin
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The junction type that lets neighboring cells exchange small molecules is the
A) desmosome. B) hemidesmosome. C) gap junction. D) tight junction. E) zonula adherens.
The right atrioventricular valve (tricuspid) regulates the opening between the _________ and the _________.
A. right atrium; left atrium B. right atrium; right ventricle C. right atrium; left ventricle D. left atrium; left ventricle E. left ventricle; right ventricle
Gametogenesis is accomplished through
a. mitosis. b. meiosis. c. binary fission. d. mitosis and meiosis. e. all of these.
The cylindrical shaped organelle with nine groups of microtubule triplets is called
A) microfilaments. B) cilia. C) microsomes. D) centrioles. E) thick filaments.