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 * y ogm3y,er1g)s6lz fl7y46 fsnl:pa(rfo6)e kjr 8i(hy b0js g6hp6 of the ribosomes labelled in 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 synth lu co1l j0lra )zrgb/5ea6*. xhk x7/r1df2mxesise proteins for secretion 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 mRNA from the nucleus to the cytoplasm.1ealmkox5 lf0/gbhaz xdlx )u/6j*r17c r2 r .Choice C is incorrect as ribosomes do not destroy proteins.
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