The following term shall have the indicated meaning unless otherwise expressly provided herein:
Every natural person, corporation, firm, partnership, association, organization, any other group acting as a unit or an executor, administrator, trustee, receiver or other representative appointed according to law. Whenever used in any section prescribing or imposing a penalty or fine, as to partnerships or associations, the word shall include the partners or members thereof, and as to corporations, shall include the officer, agents or members thereof who are responsible for any violation of such section.