A: DNA sequences that do not encode proteins
B: DNA sequences that do not encode RNA and proteins
C: DNA sequence without function
D: DNA sequence without phenotype after deletion
[单选题][2分][难度3]
举一反三
- Which of the<br/>following statements about non-coding DNA is wrong? () A: DNA sequence of non-coding protein. B: DNA sequence of non-coding RNA and protein. C: DNA sequence participating in the regulation of gene expression, but<br/>not coding protein. D: Relate to genome protection.
- Which of the following statements are correct ( ) A: In eukaryotes, a gene can encode different proteins, but a mature mRNA chain encodes only one protein. B: The function of the promoter is affected by both the DNA sequence and its conformation. C: TFs help RNA polymerase recognize the promoter. D: In DNA biosynthesis, semi-reserved replication and semi-discontinuous replication refer to the same concept.
- Which of the following DNA sequences is complementary to the mRNA sequence of 5’-AAGUCA-3’?下列哪一个DNA序列是5’-AAGUCA-3’的互补序列？ A: 5’-AAGUCA-3’ B: 5’-TTCAGT-3’ C: 5’-UUCAGU-3’ D: 5’-TGACTT-3’
- Stability genes (also called caretaker genes) encode proteins that function in the repair of major genetic defects that result from aberrant DNA replication, ionizing radiation, or environmental carcinogens.
- The sequence of part of a DNA strand is the following: -ATTCGATTGCCCACGT-. When this strand is used as a template for DNA synthesis, the product will be which one of the following?
内容
- 0
核糖体由_____组成 A: Only RNA B: Only proteins C: Only DNA D: RNA and proteins
- 1
Which of the following statements about DNA polymerase III is NOT true: A: Deoxyribonucleotide are connected to 5’ hydroxyl of synthesized DNA by DNA pol III B: Requires four kinds of 5’-dNTP C: To catalyze deoxyribonucleotide connected to 3’ terminal of RNA primer D: Pyrophosphate is one of the product
- 2
DNA<br/>polymorphisms(多态性)描述正确的() A: DNA<br/>Length polymorphisms B: DNA<br/>Sequence polymorphisms C: DNA长度多态性 D: DNA序列多态性
- 3
Which<br/>of the following statements about DNA polymerase III is NOT true:() A: Deoxyribonucleotide<br/>are connected to 5’ hydroxyl of synthesized DNA by DNA pol III B: To<br/>catalyze deoxyribonucleotide connected to the primer C: Requires<br/>four kinds of 5’-dNTP D: To<br/>catalyze deoxyribonucleotide connected to 3’ terminal of RNA<br/>primer E: Pyrophosphate<br/>is one of the product
- 4
RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, during the process of transcription.（）