What is the function of an antibody in an antigen-antibody response?
a.
to ingest and digest the antigen
b.
to remove the dna of the antigen
c.
to enclose the antigen in a protective shell
d.
to immune cells identify and destroy a pathogen
c?

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).