_____ are chemicals that alter the temperature regulating part of the hypothalamus.

Fill in the blank(s) with the appropriate word(s).


Ans: pyrogens

Biology & Microbiology

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Oxygen-rich blood moves through the left side of the heart while oxygen-poor blood moves through the right side.

a. true b. false

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To make a DNA vaccine against SARS, what type of genes were used?

A. Human genes D. SARS viral genes B. E.coli genes E. H1N1 viral genes C. Chimpanzee genes

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Double fertilization produces a ________ embryo and a ________ endosperm.

A. triploid, diploid B. haploid, diploid C. diploid, haploid D. haploid, triploid E. diploid, triploid

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