Which term is used to describe marks on a drum or a photocopier?

watermarks

trash marks

spots

indented writing

Trash marks

Explanation:

The identification of the machine either photocopier or drum can be made by observing the defects over the copies generated through the machine. These defects are called as trash marks. These trash marks are because of the dust and dirt particles present inside the machine. They may also appear as a result of defect in the machine parts.

These particles can be seen as dark specks on the copy. If the suspect and the sample photocopied document have the same trash marks then this can be said that they have been generated from the same machine. The size, color, shape and groupings of these markings can be compared and matched to establish the link between the two or more comparable documents.

Mitochondria

Explanation:

A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.

In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles.

All living organisms need energy to function. Animals eat and digest food to obtain the energy available for life activities. Thus, the organelle where energy from nutrients is released is generally referred to as mitochondria.

Animals retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.

Basically, mitochondria is one of the organelles found in all living organisms and it is known as the powerhouse. Therefore, mitochondria provides all the energy required in the cell by transforming energy forms through series of chemical reactions; breaking down of glucose into Adenosine Triphosphate (ATP) used for providing energy for cellular activities in the body of living organisms.

Additionally, the type of protein molecules used by living organisms to digest their foods are biological catalysts, enzymes etc.