# data[].attributes.headline
Why is it important for cells to buffer solutions against rapid changes in pH.

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Why is it important for cells to buffer solutions against rapid changes in pH.

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Buffers helps to maintain proper normalcy within a cell's pH. It helps maintain homeostasis within the body of cell to perform it function properly and remain in the range of pH.

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What are the functions of each of the four groups of macromolecules?

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What are the functions of each of the four groups of macromolecules?

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Carbohydrates-store energy,provide structural support
Lipids-store energy, provide barriers
Proteins- transport substances, speed reactions, provide structural support, make hormones
Nucleic Acids-store and communicate genetic information

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Explain what a chemical reaction is. What factor speeds up the rate of a chemical reaction?

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Explain what a chemical reaction is. What factor speeds up the rate of a chemical reaction?

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A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.  Heat.

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How does water's polarity effect it's properties as a solvent?

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How does water's polarity effect it's properties as a solvent?

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Because of the different substances that dissolve into it.

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How does the structure of water contribute to its unique properties.

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How does the structure of water contribute to its unique properties.

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Water molecule are polar the reason its has a bent shape because it has a positive charge on the hydrogen atoms and negative charge on the oxygen atom, in the end it for ms the hydrogen bonds. Water is called the universal solvent because other substances can dissolve in it.