Question

one of the ways smooth endoplasmic reticulum (er) differs from rough endoplasmic reticulum is that rough er is covered by
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the extracellular matrix.
ribosomes.
the cytoskeleton.
the golgi apparatus.
mitochondria.
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part f
which of the following is part of the endomembrane system?
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mitochondria
flagellum
golgi apparatus
ribosomes
cytoskeleton

Explanation:

The rough endoplasmic reticulum (ER) is called "rough" because it has ribosomes attached to its surface. The endomembrane system includes the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and the plasma membrane. Mitochondria, flagellum, ribosomes and cytoskeleton are not part of the endomembrane system.

Answer:

For the first question: B. ribosomes
For the second question: C. Golgi apparatus