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Cell Structures and Functions Model
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Grade Level
Grade 7
7.17 Cell Structures and Functions Model
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A chemical signal reaches the outside of a cell and the cell responds by making a new protein. Which model best explains the chain of organelle contributions?
A
Ribosomes receive the signal and turn directly into new membranes with no other organelles involved.
B
The membrane receives the outside signal, the nucleus provides instructions, ribosomes build the protein, and mitochondria supply energy for the process.
C
The wall receives the signal, the vacuole writes the instructions, and chloroplasts build the protein in all cells.
D
Mitochondria receive the signal, the membrane stores it, and the nucleus releases sugar for the response.
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