2
Question
The main organelle involved in modification and rooting of newly synthesized proteins to their destinations is
The main organelle involved in modification and rooting of newly synthesized proteins to their destinations is
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Solution
The correct option is C Endoplasmic reticulum
The synthesis of almost all the proteins begins on ribosomes in the cytoplasm but the final destination of these proteins are different. Proteins destined for secretions, integration in the plasma membrane or inclusion in the lysosomes share the transport pathway that begins in the endoplasmic reticulum. Proteins destined for mitochondria, chloroplasts or the nucleus each use separate mechanisms and proteins destined for the cytosol remain where they are synthesized. The pathways by which proteins are sorted and transported to their proper cellular location are often referred to as protein targeting pathways which id done by the endoplasmic reticulum. Thus, the correct answer is option B.
The synthesis of almost all the proteins begins on ribosomes in the cytoplasm but the final destination of these proteins are different. Proteins destined for secretions, integration in the plasma membrane or inclusion in the lysosomes share the transport pathway that begins in the endoplasmic reticulum. Proteins destined for mitochondria, chloroplasts or the nucleus each use separate mechanisms and proteins destined for the cytosol remain where they are synthesized. The pathways by which proteins are sorted and transported to their proper cellular location are often referred to as protein targeting pathways which id done by the endoplasmic reticulum. Thus, the correct answer is option B.
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