Answer;
-The rate of the reaction;
The presence of an enzyme affects only the rate of the reaction.
Explanation;
-Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
-Additionally, the rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction. However, enzymes become saturated when the substrate concentration is high.
A. the history is the moths that where white where able to blend in the trees before the pollution of the trees causing the trunks to turn black and the frequency of the blacks being seen to be more then the whites
They were plants that preferred a warm temperature and couldn't survive in a cold one.
They discovered these plant fossils in Svalbard, Norway, which was once home to a forest. They were thought to have originated in a tropical jungle that was close to the equator. However, these fossils were discovered in the north, where the environment prevented their growth. This demonstrated that these trees were transported by continental drift to the northern, colder region that is now Norway.
learn more about fossils here:
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Answer:
Stomach is the correct answer.
Explanation:
- The stomach is the very important organ of the body that digests the food.
- The cells in the stomach secrete enzymes and hydrochloric acid that breaks the food chemically into small molecules.
- The stomach secretes substances that control the food digestion.
- The gastric juice is formed in the stomach and it contains hydrochloric acid, organic substances(pepsin, protein, mucus) it helps in the digestion of food.
