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 t +i; yqc(18tensd .2s hxt v0hghe ribosomes labelled in the b;u 9 yg8w,xnr 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 sec 12ew4vlwg nj ba9sd,*retion outside of 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 mRj2 , lvwn9wg4 sa*deb1NA from the nucleus to the cytoplasm.Choice C is incorrect as ribosomes do not destroy proteins.
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