THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The fern is made up of compounds that are not cells.
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The cells that make up the fern are nonliving.
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The ferns cells came into existence spontaneously.
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The fern is made up of a collection of cells.
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Detailed explanation-1: -Christopher is learning about the cell theory in science class, and he applies it to a fern that is growing in his bedroom. The cell theory states that which of the following characteristics of the fern must be true? The fern is made up of a collection of cells.
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 first part states that all organisms are made of cells. The second part states that cells are the basic units of life. These parts were based on a conclusion made by Schwann and Matthias Schleiden in 1838, after comparing their observations of plant and animal cells.
Detailed explanation-4: -The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life come from preexisting life. The cell theory is so established today that it forms one of the unifying principles of biology.