Explain the production pathway used by cells to make the PSEN1 protein. Start with DNA and end at the plasma membrane. Mention some or all of the following cell parts in your explanation: rough endoplas- mic reticulum (RER), smooth endoplasmic reticulum (SER), lysosome, cytoskeleton, nucleus, ribosomes, mRNA, DNA, Golgi apparatus (GA), transport vesicles, mitochondrion, chloroplast, cell wall, plasma membrane. Hint: organize your explanation in steps, i. e. Step 1: DNA in the nucleus. . .