Question

Indicate whether each of the following descriptions better matches the rough (R) or the smooth (S) endoplasmic reticulum (ER).

1) RRSSR
2) SSRRS
3) SRRSR
4) RSRSR
5) RRSRS

Answer 1

The rough endoplasmic reticulum (RER) is responsible for protein synthesis and has ribosomes, while the smooth endoplasmic reticulum (SER) is involved in lipid synthesis, carbohydrate metabolism, and detoxification. The description provided for each sequence matches the function of the RER or SER.

Step-by-step explanation:

The rough endoplasmic reticulum (RER) is studded with ribosomes, giving it a rough appearance. It is involved in protein synthesis and works with the Golgi apparatus to transport newly synthesized proteins to their proper locations in the cell.

The smooth endoplasmic reticulum (SER) does not have ribosomes and appears smooth. It is involved in lipid synthesis, carbohydrate metabolism, and detoxification of toxic compounds within the cell.

1. RRSSR: The rough endoplasmic reticulum (RER) is responsible for protein synthesis, so it matches the description.
2. SSRRS: The smooth endoplasmic reticulum (SER) is involved in lipid synthesis and carbohydrate metabolism, so it matches the description.
3. SRRSR: The smooth endoplasmic reticulum (SER) is involved in lipid synthesis and carbohydrate metabolism, so it matches the description.
4. RSRSR: The rough endoplasmic reticulum (RER) is responsible for protein synthesis, so it matches the description.
5. RRSRS: The rough endoplasmic reticulum (RER) is responsible for protein synthesis, so it matches the description.