Section 7-2 Eukaryotic Cell Structure Answer Key Fixed |best| Jun 2026

This is the industrial zone. It’s "rough" because it’s covered in ribosomes. It modifies proteins and prepares them for transport. Smooth ER:

| Error in Old Key | Correction | Why it matters | | :--- | :--- | :--- | | "The nucleolus makes DNA." | The nucleolus makes ribosomal RNA and assembles ribosomes. DNA is in chromatin. | Prevents confusion about genetic flow (DNA → RNA → Protein). | | "Lysosomes are found only in animals." | Most plant cells do have lysosome-like vacuoles, but true lysosomes are rare in plants; however, standard high school answer keys say "only animals." | For exam purposes: say animal cells, but know plants have similar digestion. | | "Smooth ER makes proteins." | No. Rough ER makes proteins. Smooth ER makes lipids. | Critical for understanding cell specialization. | Section 7-2 Eukaryotic Cell Structure Answer Key Fixed

Older keys often state that lysosomes "create" digestive enzymes. No—they contain enzymes made by the rough ER and processed by the Golgi. This is the industrial zone

Why does the internet need a "fixed" answer key? Because many student-shared keys contain the same three errors: Smooth ER: | Error in Old Key |

Like a shipping center, it modifies, sorts, and packages proteins from the ER for storage or release outside the cell. 3. Storage, Cleanup, and Support