What is the composition of cytoplasm? also summarize the key points of the cell theory.

In 1838, a German botanist Matthias Schleiden concluded that all plants are composed of cells. A year later, Theodor Schwann, a German zoologist concluded the same thing from animals. All animals are composed of cells. In 1821-1902 Rudolf Virchow, German physicians said in his study of human diseases that all cells come from other cells. These three observations were combined to form a basic theory about the cellular nature of life

All organisms are composed of one or more cells 
Cells are the basic unit of structure and function in a living organism
Cells come only from the reproduction of existing cells

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.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: