Which of the following pieces of evidence support the first part of cell theory?
A sunflower is found to be made of plant cells.
A cat is found to be made of animal cells.
Bacteria are found to consist of a single cell.
Molecules are made up of atoms.
A chair is found to be made of atoms from the periodic table.
Which of the following pieces of evidence support the first part of cell theory?
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The correct answers are:
1. A sunflower is found to be made of plant cells.
2. A cat is found to be made of animal cells.
3. Bacteria are found to consist of a single cell.
Explanation: The first part of cell theory states that all living organisms are made up of cells. The examples of the sunflower and cat illustrate that complex organisms are composed of cells (plant and animal, respectively). Additionally, bacteria being made of a single cell supports the idea that cells are the basic building blocks of life, as single-celled organisms still fall under this definition. The other options relate to non-cellular entities or are not living organisms.
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