
Chemistry
04. Dashes
In chemistry, a pair of dashes can be used to enclose necessary information, particularly when a sentence is long. Usually, commas are enough, but in sentences that already contain sub-clauses (phrases that supply more information about the main subject of a sentence) dashes sometimes help to keep the meaning of the sentence clear.
Good example of use of dashes:
- However, with the knowledge that ACE was a zinc containing metalloprotease, exploration of mechanisms used by other members of the series - namely, carboxypeptidase A - allowed research to progress.
This sentence is long, and the dashes help the reader to follow the sense of the sentence.
However, essays littered with unnecessary dashes irritate readers.
Poor example of use of dashes:
- Iproniazid - belonging to the monoamine oxidase inhibitor class of antidepressant - is no longer marketed as an antidepressant because of the toxic side effects associated with its use.
- Iproniazid, belonging to the monoamine oxidase inhibitor class of antidepressant, is no longer marketed as an antidepressant because of the toxic side effects associated with its use.
Task | Task Type | Difficulty |
---|---|---|
Task 1 | Multiple choice | Moderate |
Task 2 | Multiple choice | Moderate |
Task 3 | Multiple choice | More Challenging |
Task 4 | Multiple choice | More Challenging |
Task 5 | Multiple choice | Moderate |
Task 6 | Multiple choice | More Challenging |
Task 7 | Free text | Easier |
Task 8 | Free text | Moderate |