Because this is happening Water + NaCl ®Na+ + Cl- the solution formed is called
A. ionic.
B. an electrolyte.
C. salty.
D. All of the choices are true.
D. All of the choices are true.
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Human females are the ________ sex.
A) homozygous B) homogametic C) hemizygous D) heterozygous
Nitrites (--NO2) are converted to nitrogen gas (N2) by
A. decomposers. B. nitrogen-fixing bacteria. C. nitrifying bacteria. D. denitrifying bacteria.
How do heat shock proteins protect plants from high temperatures?
A. Heat shock proteins prevent the double helix of DNA molecules from unwinding at higher temperatures. B. Heat shock proteins stabilize other proteins so that they don't denature at higher temperatures. C. Heat shock proteins prevent carbohydrates from being hydrolized at higher temperatures. D. Heat shock proteins prevent lipids from dissolving at higher temperatures.
Which respiratory structure likely has the largest surface area for gas exchange to occur?
A) the body surface of a worm B) the lungs of a pig C) the tracheal system of a house fly D) the gills of a trout