The abiotic elements are the nonliving ones like sand and rocks
Answer:
C- Hepatic portal vein
Explanation:
The hepatic portal vein is a vessel that moves blood from the spleen and gastrointestinal tract to the liver.
The portal vein supplies approximately 75 percent of blood flow to the liver. It's not a true vein, which means it doesn't drain into the heart. Instead, it brings nutrient-rich blood to the liver from the gastrointestinal tract and spleen. Then the liver can process the nutrients from the blood and filter out any toxic substances it contains before the blood goes back into general circulation.
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Answer:
The correct answer is "the induced fit model".
Explanation:
The first model that looked to explain the enzyme and substrate interaction was the "lock and key" model. Although this model helped scientists to understand the specificity nature of the interaction enzyme-substrate, it does not reflect reality since enzyme was portrayed as a lock with a structure that doesn't change during the catalysis. Then half century later "The induced-fit theory" was proposed which fits much better the newer version of the enzyme action model. In this theory the enzyme is partially flexible and its structure changes as a result of its interaction with the substrate.
