C, A—C—T—G—G because the letters A and T are missing
In the field of histopathology, the tissues to be observed under the microscope are cut in very thin slices. The thin slices make the tissue transparent, and thus, it becomes easier to observe the internal structures and accurately diagnose a disease. The tissues slices cut for the observation are generally not more than 3 micro meters in their thickness.
Hence, the answer is 'to make the tissues transparent and easier to observe'.
Infant, toddler, childhood, adulthood and old age
They prevent energy of some of the absorbed solar energy from leaving the Earth’s atmosphere
In biology, cell theory is a scientific theory which describes the properties of cells.
These cells are the basic unit of structure in all organisms and also
the basic unit of reproduction. With continual improvements made to microscopes
over time, magnification technology advanced enough to discover cells
in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology.
Over a century later, many debates about cells began amongst
scientists. Most of these debates involved the nature of cellular
regeneration, and the idea of cells as a fundamental unit of life. Cell
theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow
contributed to the theory. Cell theory has become the foundation of
biology and is the most widely accepted explanation of the function of
cells.
The three tenets to the cell theory are as described below:
<span><span>All living organisms are composed of one or more cells. (However,
this is considered a controversy because non-cellular life such as
viruses are disputed as a life form. See Non-cellular life.)</span>The cell is the basic unit of structure and organization in organisms.<span>Cells arise from pre-existing cells.</span></span>