C. The osmotic pressure formed by small molecular crystal substances such as electrolyte, glucose and urea in plasma is called crystal osmotic pressure, and 80% of small molecular substances come from sodium ions and chloride ions. Due to the small molecular weight of crystalline substances and the large number of solute particles, the osmotic pressure of crystals accounts for about 99.6% of the total osmotic pressure of plasma. The osmotic pressure of lens can change the liquid balance inside and outside the cell.
D. Hydrostatic pressure of interstitial fluid means that the interstitial fluid itself is squeezed by the surrounding forces in a static state. In order to maintain its relative static state, there must be an equal amount of reaction force to offset the squeezing pressure, which is called hydrostatic pressure.
E, plasma albumin exists in globular protein with high water solubility in plasma, and can be prepared into a solution with a concentration of 30%; Also known as serum albumin, it accounts for 50 ~ 60% of the total protein content in blood and has a molecular weight of 66,000. Lipids that do not contain sugar, but often contain long-chain fatty acids, can be produced by ammonium sulfate precipitation or ethanol precipitation.
So choose: C.
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