CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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enzymes are specific to substrates (lock and key)
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enzymes can work with any substrate
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enzymes are activated by molecules
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enzymes are found everywhere
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Detailed explanation-1: -The first model called the lock and key model, proposes that the shape and chemistry of the substrate are complementary to the shape and chemistry of the active site on the enzyme. This means when the substrate enters the active site, it fits perfectly, and the two binds together, forming the enzyme-substrate complex.
Detailed explanation-2: -Yes, the shape of the enzyme is crucial to determining the function. Enzymes are specialized proteins that can either build up or break down reactants. The area of the enzyme where the substrate binds is specifically shaped to fit that substrate. If the enzyme is denatured, it cannot bind to the substrate.
Detailed explanation-3: -Enzymes only allow binding of molecules that can fit in their active site. As, these active sites (can be called locks) are very specific and only few molecules (can be called keys) can bind them, this model of enzyme working is called Lock and Key mechanism.
Detailed explanation-4: -Answer and Explanation: The shape of an enzyme’s substrate molecule is complementary to that of the enzyme’s active site. This allows the substrate to sit snuggly in the active site while catalysis takes place.