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Question
in all organisms, cells are the most basic unit of structure and function. the structure of an organism is determined by the shape and organization of its cells. in multicellular organisms, cells form larger structures, like tissues and organs, that collectively determine the organisms anatomy.
many functions that keep an organism alive—such as obtaining and using energy or removing waste—happen inside its cells. though these processes may also occur within larger organ systems, the cell is the smallest unit that can carry them out.
the micrographs below show cells from two different organisms: a unicellular euglena, which is a type of protist, and a multicellular bean plant.
complete the table to describe the organisms shown in the micrographs.
- Essential processes happen in a cell: As per the text, in all organisms, cells are the basic unit for functions like energy use and waste removal. So both Euglena (a single - celled organism) and the bean plant (a multicellular organism) have essential processes in their cells.
- Made up of many cells: The text clearly states Euglena is unicellular (one cell), while the bean plant is multicellular (many cells).
- Made up of one cell: Since Euglena is unicellular, it is made of one cell, and the bean plant is multicellular (not one cell).
- A cell is its basic unit of structure: The first line of the text says cells are the most basic unit of structure in all organisms. So for both Euglena and the bean plant, the cell is the basic unit of structure.
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| Characteristic | Euglena | Bean plant |
|---|---|---|
| Made up of many cells | ✔️ | |
| Made up of one cell | ✔️ | |
| A cell is its basic unit of structure | ✔️ | ✔️ |