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Which tag is commonly used for affinity purification with immobilized metal columns?

You recorded a flow cytometry experiment with a sample that had several cell populations in it. Plotting FSC vs. SSC which population (labeled in the graph as 1, 2 or 3) in this graph are the largest?  

What factors should you consider when deciding which expression system (bacteria, yeast, mammalian cell) to use to express your group’s protein include:

You recorded a flow cytometry experiment with two markers (CD19 and CD3) and plotted on a bi-variate plot. X axis represents CD19 expression, on the Y axis CD3 expression. How would you describe the populations that are labeled in the corners as Q1, Q2, Q3 or Q4?  

Which host cell feature makes BL21(DE3) E. coli strains preferred for recombinant protein expression?

Which region of an antibody is responsible for antigen binding?

What is the main difference between an affinity tag and an epitope tag?

Which of these contains a parenthetical citation?

Which of these are necessary when giving a direct quote? (choose all that apply)

The majority of a person’s daily energy expenditure goes for