During muscle contraction, the cross-bridge detaches when 1  ________. the myosin head binds to an ADP molecule. 2  the myosin head binds to an ATP molecule. 3  calcium ions bind to troponin. 4  calcium ions bind to actin.
A plant operator is a person who supervises the operation of an industrial plant. The term is usually applied to power plants or chemical plants such as gas extraction, petrochemical or oil refinery or other chemical processes.There may be a control room in the plant where the operator works.These are known as board operators. Generally, operators are assigned to a particular unit, on which they are responsible for a certain function or area of equipment.he term is usually applied to power plants or chemical plants such as gas extraction, petrochemical or oil refinery or other chemical processes. There may be a control room in the plant where the operator works.
(G) Operator means any person engaged in surface mining who removes minerals, or minerals and incidental coal, from the earth by surface mining or who removes overburden for the purpose of determining the location, quality, or quantity of a mineral deposit.2) When the context indicates, operation or in-stream mining operation means all of the premises, facilities, and equipment used in the process of removing minerals by in-stream mining from a mining area.