Answer: RNA and DNA are the main ones, but mRNA and rRna are some, too
Explanation:
_________ is the only element capable of forming stable, extended chains of atoms bonded into single, double, or triple bonds. Hydrocarbons containing carbons which are bonded by only single bonds. Hydrocarbons containing at least on Carbon-Carbon bond which is a double bond.
D because your calf muscle is under your knee in back to if it’s already built up and can go to the heel bone because the calf muscle is connected to the heel bone
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
