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plasmid DNA
The plasmid DNA was extracted from the bacterial culture.
从细菌培养物中提取了质粒DNA。
质粒
先理解核心含义，再看它在真实句子里的用法。
质粒
a small circular DNA molecule in a cell that can replicate independently of the chromosomes
The plasmid DNA was extracted from the bacterial culture.
从细菌培养物中提取了质粒DNA。
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.
质粒
a small cellular inclusion consisting of a ring of DNA that is not in a chromosome but is capable of autonomous replication
A plasmid is a small loop of DNA that bacteria can copy independently.
质粒是细菌可以独立复制的一小段环状DNA。
Scientists insert a gene into a plasmid before putting it into a cell.
科学家先将基因插入质粒，再将其导入细胞。
Some plasmids give bacteria the ability to break down certain chemicals.
有些质粒赋予细菌分解某些化学物质的能力。
The plasmid DNA was extracted from the bacterial culture.
从细菌培养物中提取了质粒DNA。
A plasmid vector is used to clone the target gene.
质粒载体用于克隆目标基因。
We constructed a plasmid containing the green fluorescent protein gene.
我们构建了一个含有绿色荧光蛋白基因的质粒。
The researchers introduced the plasmid into E. coli cells via transformation.
研究人员通过转化将质粒导入大肠杆菌细胞。
Not this
Plasmid is a ring of DNA.
Use this
A plasmid is a ring of DNA.
中文没有冠词，学生常省略'a'，但'plasmid'是可数名词，需要不定冠词表示泛指。
Not this
I have many plasmid in the lab.
Use this
I have many plasmids in the lab.
中文复数形式不体现，学生误用单数形式，但'plasmid'是可数名词，表示多个时需加-s。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
质粒DNA
The plasmid DNA was isolated from bacterial cells.
从细菌细胞中分离出质粒DNA。
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。
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。
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。
质粒转化
Plasmid transformation efficiency was measured after heat shock.
热激后测量了质粒转化效率。
质粒提取
Plasmid extraction was performed using a commercial kit.
使用商业试剂盒进行了质粒提取。
质粒中的DNA是一个环。它是我们从细菌中提取的一段环状DNA。
Dr. Henry Wu explains how plasmids are used to insert dinosaur DNA into frog cells in the 1993 film Jurassic Park.
1993年电影《侏罗纪公园》中，亨利·吴博士解释如何使用质粒将恐龙DNA插入蛙细胞。
质粒：赋予超人能力的基因改造。你能好心……注射一个吗？
Reference to the video game BioShock (2007), where plasmids are collectible genetic powers used by the player.
源自2007年电子游戏《生化奇兵》，质粒是玩家可收集的基因能力。
Use plasmid naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
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。
可数名词，复数形式为 plasmids。
Dictionary facts from ECDICT, WIKTIONARY.