You isolate a mature mRNA from a mixed experimental sample. You want to determine if it is a eukaryotic or prokaryotic mRNA. What can you look for in the mRNA to distinguish between mature prokaryotic and eukaryotic mRNAs? a) Presence or absence of introns
b) Presence or absence of a 3' tail
c) Presence or absence of a 5' cap
d) Presence or absence of edited nucleotides not directly encoded by the DNA

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.

d.embryo is the correct one