Biology, 17.12.2020 04:50 christianmason9423
Matthias Schleiden and Theodor Schwann looked at plant and animal cells. Schwann wrote the first part of what is known as the cell theory. Which statement did he write?
A.
All organisms are composed of one or more cells. All cells come from existing cells.
B.
All organisms are composed of one or more cells. The cell is the basic unit of life in all living things.
C.
All cells come from existing cells. The cell is the basic unit of life in all living things.
D.
All cells are microscopic in size. All cells come from existing cells.
Answers: 3
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Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Matthias Schleiden and Theodor Schwann looked at plant and animal cells. Schwann wrote the first par...
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