On the "gel" below, draw where you would expect to find the following samples after they run:
Lane A: a single pure protein weighing 94 kDa
Lane B: a fraction containing one major protein weighing 100 kDa, and a contaminating protein weighing 15 kDa
Lane C: a fraction containing whole cell extract before purification (still including every protein in the cell)
Lane D: a fraction containing cell lipids, but no protein