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提问人：网友docddl 发布时间：2022-01-07

[主观题]

Ribosome is made up of

A、tRNA and proteins

B、rRNA and proteins

C、mRNA and proteins

D、proteins

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更多“Ribosome is made up of”相关的问题

第1题

请阅读第二段文本（Text 2），判断并选择你认为该文写作...

请阅读第二段文本（Text 2），判断并选择你认为该文写作的目标读者是谁？ They will never win a beauty contest, but naked mole rats may hold a lesson or two for humans. Two studies in 2013 found clues as to why these rodents can live 30 years, cancer-free. One secret may be the ribosome that excels at producing error-free proteins; misformed proteins can clog up the body’s systems and accelerate aging. Another could be a supersized version of complex sugar that seems to protect against cancer. Naked mole rats don't break this compound down as fast as other animals, so it builds up in the spaces between cells and may keep the cells from clumping together and forming tumors.

A、Expert scientist in the research area

B、General science reader

C、General public

D、Children

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第2题

二、FILL IN: （20 points, 1point for each) 1. Any pi...

二、FILL IN: (20 points, 1point for each) 1. Any piece of DNA which replicates as a single unit is called a (). 2. Almost all RNA start sites consist of a () residue. G is more common at the transcription start site than A. 3. RNA Pol III synthesizes the precurssors of () rRNA, tRNA and other () and cytosolic RNAs. Like RNA Pol II, it is located in the (). 4. The tRNA () adds the sequence 5’-CCA-3’ to the 3’-end to generate the mature 3’-end of the tRNA in tRNATyr processing of eukaryotes. 5. The replicase in prokaryotes is (), while in eukaryotes is (). 6. The major force involved in maintaining the secondary structure of protein is () bond. 7. In NER，an endonuclease () cleaves the DNA a precise number of bases on either side of the lesion. In E.coli, the gap is filled by () and the final phosphodiester bond made by (). 8. Enzymes exist which regulate the level of supercoiling of DNA molecules, these termed (). 9. The () factor is not required for transcription elongation and is released from the transcription complex after initiation. The remaining enzyme, which translocates along the DNA, is known as the () enzyme. 10. The assembled ribosome has two tRNA-binding sites. These are called the A- and P-sites, for () and () sites. 11. Alternative splicing includes the following items: alternative selection of (), alternative selection of poly(A), retention of an () and () skipping.

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第3题

The committee __________ seven members.

A.is made up of

B.is made up

C.is made of

D.is made from

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第4题

The good service at the hotel______ the poor food to some extent..A、made up forB、made up

The good service at the hotel______ the poor food to some extent..

A、made up for

B、made up

C、made for

D、made out

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第5题

A．It's made up of professional athletes,B．It's made up of college players.C．It's made

A．It's made up of professional athletes,

B．It's made up of college players.

C．It's made up of both professional and college players.

D．Ifs made up of young athletes.

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第6题

The word photographically is made up of 4 morphemes.（)

The word photographically is made up of 4 morphemes.()

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第7题

The is made up of the heads of the 15 executive departments.

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第8题

Generally speaking, a resume is made up of four sections.

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第9题

All matter is ________ of atoms.

A.made up

B.made

C.made from

D.made into

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第10题

材料题请点击右侧查看材料问题查看材料

A.make up for

B.made up of

C.make up of

D.made up for

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