THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cell theory states that cells are nonliving things.
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Cell theory states that all organisms are made of cells.
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Cell theory states that the cell is the smallest unit of life.
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Cell theory states that new cells come from preexistign cells.
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Detailed explanation-1: -Cell was discovered by Robert Hooke in 1665, after the invention of the microscope. The historic scientific theory also called cell theory tells that living organisms are made of cells, that they are the basic structural/organizational unit of all organisms.
Detailed explanation-2: -By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Detailed explanation-3: -The classical cell theory was proposed by Theodor Schwann in 1839.
Detailed explanation-4: -Schleiden and Schwann proposed that bodies of plants and animals are composed of cells and products of cells. Virchow further proposed that cells are formed from pre-existing cells. The cell theory says that no living beings can be made without cells and thus cells are integral components of living beings.
Detailed explanation-5: -The observations of Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow, and others led to the development of the cell theory. The cell theory is a widely accepted explanation of the relationship between cells and living things. The cell theory states: All living things or organisms are made of cells and their products.