In feedback inhibition, binding of the end product to the allosteric site slows down or stops the enzyme’s activity so that little or no new end product is produced. When levels of the end product drop, the enzyme will encounter fewer particles of the end product and its activity will increase again.
Answer:
The chemical element which would be the most reactive with other elements is: D. helium, #2.
A chemical property is a property of a chemical substance that is observable and measurable in the course of a chemical reaction. The chemical properties of a chemical substance include the following:
- Tarnishing.
- Heat of combustion.
- Flammability.
- Acidity.
- Chemical reactivity.
Chemical reactivity is a property that determines how readily a chemical element would bond with other chemical elements to form a new compound.
Basically, the ability of a chemical element to bond with other chemical elements is highly dependent on the number of valence electrons.
The chemical elements Neon and Argon are noble elements, and as such have a filled outermost shell and wouldn't react with other chemical elements.
Helium has a single valence electron in its outermost shell while Boron has three (3) valence electrons in its outermost shell.
In conclusion, Helium with an atomic number of two (2) would be the most reactive with other elements.
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Answer:
Option (C).
Explanation:
Osteoarthritis may be defined as the one of the most common form of arthritis that affects the joints of knees and hands. The symptoms of arthritis are stiffness, pain and loss of flexibility.
The articular cartilage get degenerated, thickening of synovium and the breakage of bone under the cartilage. Maintenance of healthy weight and proper treatment can reduce the risk of disease.
Thus, the correct answer is option (C).
According to navigation rules and regulations, you are expected to maintain a proper lookout by sight and hearing at all time. Concerning looking out, the law states that 'every vessel shall at all time maintain a proper look out by sight and hearing and as well as by all appropriate means available in order to avoid the risk of collision'.
