Question

Identify the correct statement about differences between rough and smooth endoplasmic reticulum (ER). a. The outer surface of smooth ER lacks ribosomes, whereas the outer surface of rough ER has ribosomes. b. Smooth ER is part of the endomembrane system of the eukaryotic cell, and rough ER is not. c. Rough ER consists of a network of membranous tubules and sacs called cisternae, whereas smooth ER is less complex.

Answer 1

Answer:

A

Explanation:

All eukaryotic cells possess certain membranous organs called organnelles. One of these organnelles is the ENDOPLASMIC RETICULUM. Endoplasmic reticulum (ER) is a membranous network that forms a flattened sac in the cytoplasm. The ER in eukaryotes can be found as two types; Rough ER and Smooth ER.

The Rough and Smooth ER are both part of the endomembrane system but distinct in physical appearance as ribosomes are attached to the outer surface of the Rough ER, giving it its name. This physical distinction is responsible for their functional distinction. Rough ER functions mainly to modify proteins produced in the ribosomes attached to it while smooth ER modifies lipids.

Answer 2

Answer:

A

Explanation:

All eukaryotic cells possess certain membranous organs called organnelles. One of these organnelles is the ENDOPLASMIC RETICULUM. Endoplasmic reticulum (ER) is a membranous network that forms a flattened sac in the cytoplasm. The ER in eukaryotes can be found as two types; Rough ER and Smooth ER.

The Rough and Smooth ER are both part of the endomembrane system but distinct in physical appearance as ribosomes are attached to the outer surface of the Rough ER, giving it its name. This physical distinction is responsible for their functional distinction. Rough ER functions mainly to modify proteins produced in the ribosomes attached to it while smooth ER modifies lipids.

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Explanation: