SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Outside the cell after secretion
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Within the nucleus
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Within the lysosomes
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Within the cytoplasm
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Detailed explanation-1: -The free-ribosomes synthesize soluble cytoplasmic proteins, peripheral membrane proteins, mitochondrial proteins, chloroplast proteins, peroxisomal and nuclear proteins, etc.
Detailed explanation-2: -Protein synthesis occurs in the cytoplasm on ribonucleoprotein particles, the ribosomes.
Detailed explanation-3: -Free ribosomes synthesise proteins for use primarily within the cell. Bound ribosomes synthesise proteins primarily for secretion or for use in lysosomes. Translation can occur immediately after transcription in prokaryotes due to the absence of a nuclear membrane.
Detailed explanation-4: -Ribosomes are found ‘free’ in the cell cytoplasm and also attached to rough endoplasmic reticulum. Ribosomes receive information from the cell nucleus and construction materials from the cytoplasm. Ribosomes translate information encoded in messenger ribonucleic acid (mRNA).