The lock an key analogy is used because each enzyme has specific substrates that fit into it. This is like how locks only work with a specific key. The enzyme is the lock and the substrates are the key.
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This analogy is not perfect because there are often multiple substrates for each enzyme reaction. It only takes one key to turn the lock. The reaction is also taking place between the substrates themselves and not the enzyme. In the lock and key analogy, the lock is affected by the key, but in an enzyme reaction, the substrates are affected by the enzyme.
Hope I’ve helped ;)
Along with peanuts<span> and shellfish, tree nuts are one of the </span>food allergens<span> most often linked to anaphylaxis — a serious, rapid-onset </span>allergic reaction<span> that may be ... to determine the presence of</span>allergen-specific<span> immunoglobulin E, an antibody that binds to </span>allergens<span> and triggers the release of chemicals that </span>cause<span> symptoms</span><span>.
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Answer:
True.
Explanation:
in the early 1900s development of Salvarsan, an arsenic-based drug to treat syphilis.
I would think of a unicellular organism or a plant, but I'm not too sure on this one, Just trying to help :)
Mouth, pharynx, esophagus
