What is the difference between Density Dependent and Independent Factors?

How does a lytic infection differ from a lysogenic infection?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Mrna: gcuaauguc what amino acids does the mrna above code for? what type of amino acids or function are uag, uga, and uaa coding for? which codon (3 letters) signals translation to start and also codes for the amino acid methionine (met)?