Which of the following statements is true about the structure of the cell membrane? - a.) the two layers of the plasma membrane are identical. b.) the plasma membrane is a rigid structure. c.) the proteins that make up the two layers are not identical. d.) proteins are found only on one surface of the membrane.

The correct answer to this question is C. The proteins that make up the two layers are not identical. I got my answer off of plato.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.