CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to synthesise proteins that are used within the cytoplasm of that cell
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to make proteins that are usually transported out of the cell
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to synthesise fats and steroids e.g. sex hormones
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detoxification i.e. converting harmful substances into harmless materials
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Detailed explanation-1: -What does the rough ER do? The rough ER purpose is to produce proteins that will become part of the endomembrane system, the plasma membrane or to be secreted. The endomembrane system includes all membranes within the cell, such as the endoplasmic reticulum itself, the Golgi apparatus, lysosomes and vesicles.
Detailed explanation-2: -The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
Detailed explanation-3: -From the endoplasmic reticulum, proteins are transported in vesicles to the Golgi apparatus, where they are further processed and sorted for transport to lysosomes, the plasma membrane, or secretion from the cell.
Detailed explanation-4: -The rough endoplasmic reticulum works with the Golgi apparatus to move new proteins to their proper destinations in the cell.
Detailed explanation-5: -Proteins targeted for transport to the Golgi apparatus are transferred from ribosomes on rough ER into the rough ER lumen, which serves as the site of protein folding, modification, and assembly. The proximity of the rough ER to the cell nucleus gives the ER unique control over protein processing.