A plasmid that is attached to the cell membrane or integrated into the bacterial chromosome is called an episome (q.v.). Plasmids are extremely valuable tools in the fields of molecular biology and genetics, specifically in the area of genetic engineering (q.v.).
Gerund and Infinitive: Whatâs the Difference? Knowing the difference between gerund and infinitive can save you from making costly grammar mistakes when writing. In a nutshell, a word formed from a verb acting as a noun and ending in ing is a gerund. Infinitive phrases â normally referred to as infinitives â are formed with the word to in front of a verb.
A gerund is a verb form that functions as a noun. Although similar to a verbal noun, the two are not identical, as a gerund retains properties of a verb, whereas a verbal noun does not; in English this is most evident in the fact that a gerund can be modified by an adverb and can take a direct object. The term -ing form is often used in English to refer to the gerund specifically. Traditional grammar made a distinction within -ing forms between present participles and gerunds, a distinction th