INTRODUCTION
CELL STRUCTURE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Smooth ER lacks:
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nuclei
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ribosomes
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chloroplasts
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lysosomes
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Explanation:
Detailed explanation-1: -When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance. Smooth endoplasmic reticulum lacks ribosomes and helps synthesize and concentrate various substances needed by the cell.
Detailed explanation-2: -Smooth Endoplasmic Reticulum does not have ribosomes on its membrane. Rough Endoplasmic Reticulum possesses ribosomes attached to its membrane.
Detailed explanation-3: -Assertion: The endoplasmic reticulum which lacks ribosomes is called smooth. endoplasmic reticulum (SER) Reason: SER is mainly involved in protein synthesis.
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