They include the temperature and the pH value.
Each enzyme has a temperature range and pH range that makes them has the quickest action, they're called the optimum temperature and pH. Each optimum temperature and pH is different for each enzymes.
For example, the enzyme in our stomach has a optimum temperature of human temperature range, and a optimum pH for 2.0
However, if the temperature is too low or the pH value is too extreme, the enzyme may denature. The enzyme can no longer work to digests any substrate.
<span>Answer: E. The liver makes bile, which is needed to absorb lipid-soluble vitamins.
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The liver makes bile that absorbs vitamin A, D, E, and K which is lipid-soluble. If the liver damaged and the bile production is reduced, the absorption of those vitamins will be reduced too. Vitamin K has a role in blood clotting, so the symptoms probably caused by vitamin K deficiency.
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The planet that comes after earth would be MARS