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.
Gerunds are distinguished grammatically from other uses of a verb's-ing form: the present participle (which is a non-finite verb form like the gerund, but is adjectival or adverbial in function), and the pure verbal noun or deverbal noun. gerund behaves as a verb within a clause (so that it may be modified by an adverb or have an object); but the resulting clause as a whole (sometimes consisting of only one word, the gerund itself) functions as a noun within the larger sentence.