OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ribosomes
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chromosomes
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Golgi apparatus
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nucleolus
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Detailed explanation-1: -The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins. Sometimes, when those proteins are made improperly, the proteins stay within the endoplasmic reticulum.
Detailed explanation-2: -These ribosomes are constantly being attached and detached from the ER because they are not part of the stable organelle. They attach when the ribosome begins to synthesis a protein which is going to be secreted (secretory pathway).
Detailed explanation-3: -Ribosomes are found ‘free’ in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER. In a mammalian cell there can be as many as 10 million ribosomes. Several ribosomes can be attached to the same mRNA strand, this structure is called a polysome.