Which of the following is attached to both karyotheca and plasma membrane?

Golgi body

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Lysosome

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Food vacuole

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Endoplasmic reticulum

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Solution

The correct option is D Endoplasmic reticulum
Endoplasmic reticulum (ER) is a membrane-bound organelle found in all eukaryotic cells except mature erythrocytes. ER is of two type smooth endoplasmic reticulum and rough endoplasmic reticulum. Smooth endoplasmic reticulum is found at the periphery of the cell i.e., towards the plasma membrane and they are devoid of ribosomes. Rough endoplasmic reticulum has rough surface due to the presence of ribosome and they are present towards the nucleus and attached with the karyotheca. Thus, the correct answer is option D.

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Question 10
Find out the correct sentence.

(a) Enzymes packed in the Lysosomes are synthesized by the RER (rough endoplasmic reticulum).
(b) Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipids and proteins respectively.
(c) The endoplasmic reticulum is related to the destruction of plasma membrane.
(d) Nucleoid is present inside the nucleoplasm of the eukaryotic nucleus.

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