Answer:
The lock and key model is used to explain how enzymes work.
Explanation:
An enzyme is a protein that functions as a biological catalyst . Enzymes are folded into complex shapes that allow smaller molecules to fit into them. The place where these molecules fit is called the active site.
The lock and key model was given by Emil Fischer in 1984 . According to this model the active sites of the enzymes have a specific geometric shapes wherein the substrate molecules fit in just like a key in a particular lock.
The lock and key model of an enzyme action is based upon structural complimentarity between the substrate molecule and the enzyme active site . Thus specific enzyme molecules will interact with specific substrate molecules only .
This specific action of an enzyme with a single substrate can be explained using lock and key analogy . In this analogy the lock is the enzyme and the key is the substrate . Only correctly sized key ( substrate ) fits into the key hole ( active site ) of the lock ( enzyme )
Solid is the low energy state of condensed matter is characterized by structural rigidity
CH4 is the molecular formula for methane.
The phosphate molecule that is released it is coupled to a different ADP molecule to make new molecule of ATP.
Hydrolysis of high-energy compound (ATP) using water:
ATP + H₂O → ADP + Pi
ATP is short for adenosine triphosphate.
Hydrolysis is a reaction that breaks down the chemical bonds between molecules via the addition of a water molecule.
A condensation reaction is a reaction that joins two molecules in a chemical bond.
ATP is resynthesized in a condensation reaction that adds an inorganic phosphate group to ADP. The addition of a phosphate group is catalyzed by the enzyme ATP synthase.
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b. ethane (C2H6), a nonpolar covalent compound
Explanation:
The substance that would most likely need to cool to the lowest temperature before it condenses is ethane, a non-polar covalent compound.
Ethane in liquid form has very weak attractive forces binding the molecules together.
To form and change state, all the molecules must be brought very close together under very high pressure and low temperature. Else, they will not attract one another.
- Ionic crystal lattice forces as seen in KBr are strong attractive forces. As a substance such as KBr begins to condense, they begin to attract one another with a very strong force even before they cool to their least temperature.
- Ammonia has strong intermolecular hydrogen bonds in its structure which binds them together. The attraction is great between the hydrogen of one molecule and the nitrogen of another.
- In ethane we have a weak attraction.
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