Respuesta :
An example of mechanical work is the contraction of muscles; an example of transport work is the pumping of ions across the cellular membranes.
Generally, our cells can perform three major types of work which include chemical work, mechanical work as well as transport work.
A chemical work example is the building of proteins which are considered large molecules. The energy required for the dehydration synthesis reaction is provided by ATP which is able to link amino acids together.
One of the major examples of mechanical work is the activity of contraction of muscles. In the muscle cells, phosphate groups are transferred to certain proteins by ATP. These proteins are able to change the shape, which can start a series of events that makes the contraction of muscle cells.
On the other hand, a transport work example includes the activity of pumping solutes including ions to pass across a cellular membrane. Here again, there will be a transfer of a particular phosphate group from ATP that makes the respective receiving membrane protein so as to change shape as well as enable ions to pass through effectively.
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