Answer: Positive feedback loop
Explanation:
Even before the food reaches the stomach (before ingesting it), the glands of the stomach mucosa begin to release its gastric secretion. The main characteristic of this secretion is acidity, as measured by pH (one of the physiological variables).
This acidity is a result of the presence of hydrochloric acid, which is part of the secretion composition. In addition to it, water, pepsinogen (which will give rise to the enzyme pepsin) and the intrinsic factor. The acid has a function of the protection of the entire system by eliminating microorganisms. It is also responsible for the activation of pepsin (which only occurs with acid pH), the enzyme that digests proteins containing the amino acids leucine or phenylalanine or tryptophan or tyrosine.
The concept of Positive feedback loop states that the body tries to increase the value of a variable (acidity, in the case of pepsinogen) when it is below its optimal value (called a point adjustment) and decreases this value when it is above optimal.
Answer:
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Explanation:
True because the xylem transports water from the roots to the rest of the plant's body above ground and can only move up, whereas the phloem transports organic compounds both up and down the plant.
Social behavior refers to the interaction exhibited among two or more organisms of the same specie. Benefits of social behaviour include the following:1. It offers protection. Many animals live together in groups in order to secure protection for themselves.2. It heightened the success of obtain food. Previous studies have shown that many animals are successful in searching for food if they search in groups. 3. Some animals travel in groups in order to make travel easier and also to protect themselves from predators.
Answer:
Answer is uhhhhhhhhh
Explanation:
A??
The scientist collaborates with others to plan and carry out an experiment and then writes a paper that has a clear conclusion. He submits it to a professional journal for peer review, after which the results are presented publicly.
