Word · Frequency #9438
plasmids
质粒
plasmids is the plural of plasmid.
核心释义
a small circular DNA molecule in a cell that can replicate independently of the chromosomes
- 1.
质粒:一种双链DNA环,独立于染色体并自主复制；常见于细菌,也见于古菌和真核细胞,在基因工程中用作基因转移载体。
A loop of double-stranded DNA that is separate from — and replicates independently of — the chromosomes; such loops are most commonly found in bacteria, but they are also sometimes found in archaeans and eukaryotic cells, and they are used in genetic engineering as a vector for gene transfer.
- 2.
质粒
a small cellular inclusion consisting of a ring of DNA that is not in a chromosome but is capable of autonomous replication
质粒:一种双链DNA环,独立于染色体并自主复制；常见于细菌,也见于古菌和真核细胞,在基因工程中用作基因转移载体。；[医] 质体(胞质遗传体)
用法In use
A plasmid is a small loop of DNA that bacteria can copy independently.
用法提示：此处 plasmid 为可数名词单数形式，指细菌中独立复制的环状DNA分子。
Scientists insert a gene into a plasmid before putting it into a cell.
用法提示：此处 plasmid 为名词单数，作介词 into 的宾语，表示作为载体的质粒。
Some plasmids give bacteria the ability to break down certain chemicals.
用法提示：此处 plasmids 为可数名词复数形式，强调多个质粒，作句子主语。
plasmid DNA
The plasmid DNA was extracted from the bacterial culture.
从细菌培养物中提取了质粒DNA。
plasmid vector
相关词与表达Connections
搭配Collocations
- plasmid DNA
- 质粒DNA
- The plasmid DNA was isolated from bacterial cells.从细菌细胞中分离出质粒DNA。
- plasmid vector
- 质粒载体
- The gene was inserted into a plasmid vector for expression.该基因被插入到质粒载体中进行表达。
- recombinant plasmid
- 重组质粒
- A recombinant plasmid carrying the target gene was constructed.构建了携带目标基因的重组质粒。
- plasmid replication
- 质粒复制
- Plasmid replication occurs independently of chromosomal replication.质粒复制独立于染色体复制进行。
- plasmid transformation
学习提示Learner notes
记忆技巧Memory Tip
质粒是细胞质中的环状DNA，想象“plasma”（血浆）中有个“mid”（中间）的环。
语境与语域Context & Register
语域：formal 常见场景：分子生物学、遗传学、医学 通常用于科学和医学领域，是比较正式的学术词汇。
语法说明Grammar Note
可数名词，复数形式为 plasmids。
发音与拼写Pronunciation & Spelling
These words all share the 'mid' ending and have the same final syllable as 'plasmid': /-mɪd/.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.