INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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nucleus
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mitochondria
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cell membranes
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ribosomes
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genetic material
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Detailed explanation-1: -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. Rudolf Virchow later made important contributions to this theory.
Detailed explanation-2: -The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made of cells. The second part states that cells are the basic units of life.
Detailed explanation-3: -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.
Detailed explanation-4: -The cell theory states that all living things are made up of cells, and living cells always come from other living cells. The gene theory states that the characteristics of living things are controlled by genes. Homeostasis is maintaining a constant internal environment. Evolution is a change in species over time.