Most Bacteria Live in a Solution That Is Hypotonic Relative

question 39

Multiple Choice

Most bacteria live in a solution that is hypotonic relative to the cytoplasm of the bacteria. The cell wall of a bacterium is a peptidoglycan polymer that is tightly cross-linked. This would therefore function to

• A) regulate the flow of most molecules into and out of the bacterial cell.
• B) provide a rigid wall that prevents the cell from swelling.
• C) provide a rigid wall that prevents the cell from shrinking.
• D) confirm a close relationship to plant cells that have a similar structure and live in hypotonic solutions.
• E) make all bacteria fairly uniform in metabolic chemistry.

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