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Further detail
1. Which statement summarizes the three central claims of cell theory?
2. What structure allows the plasma membrane to regulate which substances cross it?
3. How do ribosomal subunits become functional ribosomes in a cell?
What does cell theory state about the composition of living organisms?
All living organisms are composed of cells.
What does cell theory identify as the basic unit of life?
The cell.
From what do new cells arise, according to cell theory?
Pre-existing cells.
What is the plasma membrane?
A selectively permeable phospholipid bilayer with embedded proteins.
Where do ribosomal subunits form, and from what materials?
They form in the nucleolus from rRNA and proteins.
Where do ribosomal subunits assemble into ribosomes?
In the cytoplasm.
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