â¢ Medium-grained (1/16 mm to 2 mm) rocks are usually called sandstone. Medium-grained rocks can be composed of quartz grains, feldspar grains (arkose), or rock fragments and clay (graywacke). Sandstone (Photograph by Parvinder Sethi). Medium-sized grains in clastic sedimentary rocks form sandstone. This sample is a quartz sandstone.
Eukaryotes are those organisms in which the cell body contains a nucleus whereas prokaryotes are those organisms in which the cell body does not contain a nucleus. In amoeba, the reproduction is carried out under the instruction of the nucleus thus making it a eukaryote organism.
What is the difference between Prokaryotic DNA and Eukaryotic DNA? â¢ In eukaryotes, DNA is found mostly in the cell nucleus, but some are in mitochondria and chloroplast while, in prokaryotes, it is found in the cytoplasm. â¢ DNA usually occurs as circular chromosomes in Prokaryotes while it is linear chromosomes in Eukaryotes. â¢ Eukaryote DNA has the histone protein, but prokaryote doesnât have that.