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Quercus stellata, the post oak or iron oak, is a North American species of oak in the white oak section. It is a slow-growing oak that lives in dry areas on the edges of fields, tops of ridges, and also grows in poor soils, and is resistant to rot, fire, and drought. Interbreeding occurs among white oaks, thus many hybrid species combinations ...
Osmolarity is affected by changes in water content, as well as temperature and pressure. In contrast, osmolality is independent of temperature and pressure. For a given solution, osmolarity is slightly less than osmolality, because the total solvent weight (the divisor used for osmolality) excludes the weight of any solutes, whereas the total ...
This is due to urea entering the cell down its concentration gradient, followed by water. The osmolarity of normal saline , 9 grams NaCl dissolved in water to a total volume of one liter, is a close approximation to the osmolarity of NaCl in blood (about 290 mOsm / L ).
The leaf margins are flat with two or three pairs of shallow lobes apical half, shiny dark green on top but gray underneath between 3 and 5 pairs of veins. The petiole is between 3 and 10 mm long. The flowers appear in spring. The acorns are between 1.2 and 1.6 cm (1 ⁄ 2 and 5 ⁄ 8 in) long, oblong, and dark brown. It produces acorns one at ...
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EnvZ is a sensor-transmitter that spans the inner cytoplasmic membrane and has historically been divided into two domains, the sensory and the transmitter domain. [3] [4] The protein is composed of a short N-terminal tail in the periplasm, two transmembrane regions with an intervening periplasmic loop, and a cytoplasmic domain containing the autophosphorylated histidine residue, which is ...
"One or two is fine." Frozen pipes pictured. Failure to prepare your home when temperatures drop below freezing can lead to thousands of dollars in repairs for homeowners.
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