Question

The drawing is of a magnified human liver cell.

Which of the following is true about structure labeled X?

• A. It is mainly found in cells associated with the synthesis of lipids and steroid hormones.
• B. It is mainly found in cells away from the nucleus and transport its products to the chloroplast.
• C. It is mainly associated with nuclear membrane reformation in late anaphase and packaging of protein and synthesis of glycolipids.
• D. Is mainly associated with nuclear membrane reformation during telophase stage and transport its synthetic products to dictyosomes in plants.

Answer 1

Answer: (D)

The structure labelled X is rough endoplasmic reticulum. Eukaryotic cells have a network or reticulum of tiny tubular structures scattered in the cytoplasm that is called the endoplasmic reticulum (ER). The endoplasmic reticulum bearing ribosomes on their surface is called the rough endoplasmic reticulum (RER). RER is frequently observed in the cells actively involved in protein synthesis and secretion. The golgi apparatus principally performs the function of packaging materials to be delivered either to the intra-cellular targets or secreted outside the cell. Energy production is the function of mitochondria