2. Mercury is a liquid metal having a density of 13.6 g/mL. What is the volume of 0.253 kg of mercury metal? (*watch your units)

1) this is the structure in the cell nucleus that houses a cell's genetic information

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.