Each　RNA polymerase contains subunits with homology to subunits of the E. coli RNA polymerase as well as additional subunits， which are unique to each polymerase.

The enzyme neuraminidase consists of a ring of __ identical protein subunits.

A polymer is a large molecule, or ___________, composed of many repeated subunits. A: superglue B: superconductor C: elastomer D: macromolecule

Which structure is not secondary structure of the protein？（） A: α-helix B: β- fold C: β- Angle D: subunits

Which of the following statement about RNA polymerase in prokaryotes is correct: A: Holoenzyme is composed of five subunits (ααββ′σ) B: Any subunit of holoenzyme cannot bind to DNA separately in vivo C: Core enzyme consists of five subunits(ααββ′ω) D: σ factor helps RNA polymerase to recognize promoter

Each type of cytoskeletal component is composed of simple protein subunits that associate noncovalently to form filaments of uniform thickness.

The<br/>spatial conformation of protein include: () A: α-helix B: β-pleated<br/>sheet C: domatin D: motif E: polymerization<br/>of subunits

Which of the<br/>following statement about RNA polymerase in prokaryotes is<br/>correct:() A: Holoenzyme is composed of five subunits (ααββ′σ) B: Any subunit of<br/>holoenzyme cannot bind to DNA separately in vivo. C: Core enzyme<br/>consists of five subunits(ααββ′ω) D: σ factor can<br/>catalyze the synthesis of RNA E: σ factor<br/>helps RNA polymerase to recognize promoter

Which of the following statement about RNA polymerase 1 is correct ( ) A: Composed of 8~16 subunits B: The transcription product is rRNA C: Located in the nucleolus D: Sensitive to α-Amanita

Which of the following statements about RNA polymerase II is wrong? A: It makes mRNA precursors B: It is strongly inhibited by a-amanitin C: It is composed of several subunits D: It has high frequency phosphorylation of the CTD in the maximum subunit<br/>during initiation