Lactase will most likely be found in the small intestine and food spends the largest time there.
The digestive system refers to all the structures that are responsible for the breakdown of food in the body. In each part of the digestive system, enzymes act on the food particles to enable certain conversions.
The enzyme lactase in involved in the digestion of milk and diary products. The enzyme has an optimum pH of about 6 hence it works in an acidic environment. Lactase is found in the small intestine.
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Volcanic mountains form when molten rock from deep inside the Earth erupts through the crust and piles up on itself.
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The correct answers are "The heart is posterior/dorsal to the sternum" and "The lungs are deep to the ribs".
Explanation:
It is not true that the heart is posterior/dorsal to the sternum. Actually, it is considered that the heart is deep to the sternum, as well as the aorta, vena cava, and thymus gland. On the other hand, the lungs are posterior/dorsal to the ribs. The lungs are located in the thoracic cavity, which is extending anteriorly and laterally to the ribs.
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When exposed to cold such as during winter they aren’t camouflaged which makes them exposed for any hungry predators
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