Answer:
a substituted derivative of purine, especially the bases adenine and guanine present in DNA.
a colorless crystalline compound with basic properties, forming uric acid on oxidation.
What is the primary cellular site for the production of polypeptide chains? Ribosomes
Answer:
Water is important in chemical weathering because most substances dissolve in water.
The process of dissolving breaks up the minerals in the rock into small pieces. The small pieces mix with water to form.
Acids are also agents of chemical weathering and cause more chemical weathering than pure water does.
