Unity and Diversity A.2 Nucleic Acids (id: 535838060)

本题目来源于试卷: Unity and Diversity A.2 Nucleic Acids，类别为 IB生物学

[单选题]
What is the main role of theo sw/b5g/z7yj ribosomes labelled i-vq (wf-whjpyi(i .jcm;l4c 5 u) pfj3n the micrograph?

A. Synthesise enzymes to be used within the cytoplasm
B. Transport mRNA from the nucleus to the cytoplasm
C. Destroy proteins that the cell no longer needs
D. Synthesise proteins for use in lysosomes


参考答案:  D


本题详细解析:
Bound ribosomes synthesise proteins for secretion outside of d117/xj5l di0pz)s8vhtnar5a diw3h the cell, membrane-associated proteins or proteins used in lysosomes (Choice D).Choice A is incorrect, as free ribosomes synthesise proteins for use primarily within the cytoplasm.Choice B is incorrect as bound ribosomes do not transport mRNA from the nucleus to the cytoplasm.Choich i1nd v s0da 1pw xh5)a738jr5zl/idte C is incorrect as ribosomes do not destroy proteins.

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