cofactor

美 { "us": "", "uk": "" }
英 { "us": "", "uk": "" }
数据源: ai_enrichment
在数学中,指矩阵的余因子,用于计算行列式和逆矩阵;在生物化学中,指辅助酶催化反应的有机分子或金属离子。

用法要点

句型搭配

通常作为名词使用,在句子中作主语或宾语,常见于学术或技术语境,描述数学或生物化学中的辅助成分。

• The cofactor is essential for enzyme activity.
• Calculate the cofactor of this matrix element.
• This reaction requires a metal cofactor.

介词用法

常与介词'of'连用表示所属关系,如'cofactor of a matrix';在生物化学中,可与'for'搭配表示用途,如'cofactor for the enzyme'。

• cofactor of the determinant
• cofactor for catalysis
• cofactor in the reaction

语域说明

主要用于学术、科学和技术领域,如数学、生物化学和计算机科学,日常对话中较少使用,属于专业术语。

• In linear algebra, cofactors are used in matrix operations.
• The enzyme's cofactor is a vitamin derivative.
• This algorithm involves cofactor computation.

基础例句

In math class, we learned how to find the cofactor of a 3x3 matrix.

在数学课上,我们学习了如何计算一个3x3矩阵的余因子。

This enzyme needs a cofactor to work properly in the body.

这种酶需要一个辅因子才能在体内正常工作。

Can you explain what a cofactor is in simple terms?

你能用简单的语言解释一下什么是余因子吗?

高级例句

The research paper discusses the role of metal cofactors in enzymatic catalysis, highlighting their impact on reaction rates.

这篇研究论文探讨了金属辅因子在酶催化中的作用,强调了它们对反应速率的影响。

In linear algebra, the cofactor expansion method is used to compute determinants efficiently for large matrices.

在线性代数中,余因子展开法用于高效计算大型矩阵的行列式。

The pharmaceutical company is developing drugs that target specific enzyme cofactors to treat metabolic disorders.

这家制药公司正在开发针对特定酶辅因子的药物,以治疗代谢性疾病。

高频搭配

verb

calculaterequirebindactivateinvolve

adjective

essentialmetalorganicnecessaryspecific

noun

matrixenzymereactiondeterminantactivity

adverb

closelydirectlytypically

preposition

offorinwith

phrase

cofactor expansioncofactor matrixcofactor functioncofactor group

常见错误

❌ 错误:The cofactor is same as the determinant.
✓ 正确:The cofactor is related to the determinant but not the same.

错误在于混淆了概念:余因子是矩阵元素的一个计算值,用于求行列式,但本身不是行列式。应明确区分两者的定义和用途。

❌ 错误:I need a cofactor for my homework.
✓ 正确:I need to calculate the cofactor for my math homework.

错误在于用法不具体:'cofactor'作为专业术语,在上下文中应指明是数学计算还是生物化学中的成分,避免歧义。

近义词辨析

coenzyme

coenzyme特指有机辅因子,通常是维生素衍生物,参与酶反应;cofactor更广义,包括有机分子和金属离子。

Vitamin B12 acts as a coenzyme in some reactions, while zinc can be a cofactor in others.

adjunct

adjunct泛指辅助物或附加成分,用途广泛;cofactor专指数学或生物化学中的特定辅助元素,更具技术性。

In grammar, an adjunct modifies a sentence, but in biochemistry, a cofactor assists an enzyme.