第十六章单元测试
- In bacteria, transcription and translation are tightly coupled. （ ）
- Once a mature mRNA is transported to the cytosol, it will only encode for that specific protein. （ ）
- 6)Protein synthesis generally starts with Methionine (or more specifically for bacteria, N-formylmethionine.（ ）
- Organisms use a ___________ genetic code?（ ）
- The vast majority of proteins targeted to the endoplasmic reticulum (ER) possess an amino-terminal signaling sequence. Which of the following statement(s) is true:?（ ）
A:错 B:对
答案:对
A:对 B:错
A:对 B:错
A:Nonoverlapping and non-degenerate B:Nonoverlapping and degenerate C:Overlapping and degenerate D:Overlapping and non-degenerate
A:The signal sequence is bound by a Signal Recognition Particle (SRP) when it emerges from the ribosome B:The signal sequence contains a high number of hydrophobic amino acid residues C:The signal sequence is usually cleaved from the protein upon translocation into the ER D:The signal sequence is highly conserved across all life
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