<span>The
number of the hydrogen atoms in a molecule of 6NH3 is 18.
Because 6 x 3 = 18
6NH3 = 6 ( Nitrogen Hydrogen 3)
So that would be 6 times 3 hydrogen the answer is 18.
Hydrogen atoms are the atoms of the chemical element hydrogen. It usually
contains a single positive charge protons and single negative charge electrons.
It do not have neutrons. It is called as protium with a symbol of 1H</span>
Answer:
The shape of an enzyme determines which reaction it can catalyze.
Explanation:
Each enzyme is specific to one type of reaction. According to the structure of each enzyme, it has an active site capable of binding to a specific substrate, so the shape of the enzyme determines the type of reaction to be catalyzed.
Once the reaction occurs, the enzyme releases the product of the reaction and the enzyme is available for another reaction.
Regarding the other options:
- <em>The shape of an enzyme no depends on the reaction that it needs to catalyze.
</em>
- <em>Due to their specificity, enzymes can only catalyze one reaction at a time</em>
- <em>The shape of the enzyme is not altered after the reaction.</em>
The answer is mitochondrion
Answer:
The correct answer is C. co-evolution
Explanation:
When two or more species evolution is influenced by each other and are interdependent than this type of evolution is known as co-evolution. There are several examples of co-evolution like predator-prey co-evolution, flowering plants and pollinators evolution, etc.
The predator-prey evolution is famous in which there is selective pressure on prey to evolve to avoid getting hunted and the same pressure is on predator to evolve with prey so that they can get their food and survive. Therefore the correct answer is co-evolution.
Decreased blood pressure
Angiotensin II is a hormone and its effect on the body is that of vasoconstriction. Vasoconstriction is when the blood vessels within the body constrict, increasing the blood pressure in the body. However, angiotensin is present in the body as angiotensin I, which is the precursor to angiotensin II and has to be converted in the body. If the enzymes necessary to do so are absent, angiotensin II will not be produced and the blood pressure of the body will not be elevated.
