This control is called negative feedback. Mechanism of negative feedback. Each metabolic reaction or process is regulated by several enzymes. These enzymes control the rate of these reactions and thus are fundamental in maintaining homeostasis. In a negative-feedback pathways, the end product of a pathway binds to the allosteric site of the first enzyme, closing its active site and blocking the rest of the reactions.
'The best answer is a lava flow. Primary succession happens in lifeless areas or regions where soil is not capable of sustaining life which may be caused by lave flows, retreating glaciers or newly formed sand dunes. It is one of the two types of biological and ecological succession.
Answer: The correct answer is: They compete with already present animals for sources of food.
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Explanation:
The answer is C.
Hershey and Chase did an experiment to determine whether it was the protein or the DNA that was the transformation principle in viruses by infecting bacteria cells with a virus.
They tagged the protein shell and the DNA and introduced them into a culture of bacteria cells. They concluded that it was DNA that entered the bacteria cells and not the protein.
Again the answer is C.
Answer:
B. Fossil
Explanation:
According to National Geographic, "Fossils are the preserved remains, or traces of remains, of ancient organisms." When you find the impression of a leaf, the leaf imprint is the preserved remains of the leaf.