Match the terms (2) enzyme with the following descriptions:
a. has a tertiary structure that recognizes the substrate
b. is the combination of an enzyme with the substrate
c. has a structure that fits the active site of an enzyme

Question

Match the terms (2) enzyme with the following descriptions:

a. has a tertiary structure that recognizes the substrate

b. is the combination of an enzyme with the substrate

c. has a structure that fits the active site of an enzyme

Accepted Answer

All right. Hello everyone. So this question is asking us which of the following statements does not match the description of the enzyme. And here we have four different statements labeled A through D which we'll discuss later on in this video. But for now, let's recall a few basic facts about enzymes and what they do. Right. So, starting off with the general role of the enzyme which is to catalyze chemical reactions. And so recall that the way in which they do so is by reducing the activation energy or euba of the protein it catalyzes. So what that means is that an enzyme is going to reduce the energy barrier needed for the reaction to take place. It reduces the minimum energy required for the reaction to happen. Now, enzymes are mostly proteins. So the vast majority of enzymes are proteins which means that they are sensitive to their environment proteins if you recall, are prone to denature, when faced with a sudden change in things like temperature, ph or even the solvent can disrupt the structure or protein. And so from here, we recall that enzymes are very specific to the reactions that they catalyze which means that an enzyme is specific two, it's substrate or sometimes multiple substrates. And so what that means is that an enzyme is only going to act upon its specific substrate substrate in this context, referring to the species that's going to be modified somehow after the reaction catalyzed by the enzyme. So from here, let's go ahead and analyze our choices starting off with option A which says that enzymes can be reused in multiple reactions. This statement is true, right? Because another feature of the enzyme is that they're not consumed during the reaction, rather they are regenerated after the reaction is complete, which means that it can be used multiple times. Option B says that all enzymes work best at a neutral ph the fact that the statement says all enzymes means that this is not going to be true, right? Because recall it in our body specifically, we have multiple different or rather multiple environments can have a different ph to them. So enzymes that function in the stomach acid, for example, are not going to work in the relatively neutral ph of the blood, for example. And so the reason why statement B is not true is because all enzymes have their own ideal environment and it's not always going to be neutral statement C or option C says that enzymes lower the activation energy for chemical reactions. This is true, right? Because as mentioned before, an enzyme is going to lower the minimum amount of energy required for a reaction to take place, making that reaction more likely to happen. And last but not least, option D says that enzymes are specific to the substrates they bind with. And this is true, right? Because enzymes have specific active sites that are going to bind only to their substrate, allowing for the enzyme to act on that substrate only. So here our correct answer is going to be option B all enzymes work best at a neutral Ph because it's the only statement that does not match the properties of an enzyme and there you have it. So with that being said, thank you so very much for watching and I hope you found this helpful.

Match the terms (2) enzyme with the following descriptions:
a. has a tertiary structure that recognizes the substrate
b. is the combination of an enzyme with the substrate
c. has a structure that fits the active site of an enzyme

Verified video answer for a similar problem:

Key Concepts

Enzyme Structure

Active Site

Enzyme-Substrate Complex

Match the terms (2) enzyme with the following descriptions:a. has a tertiary structure that recognizes the substrateb. is the combination of an enzyme with the substratec. has a structure that fits the active site of an enzyme

Verified video answer for a similar problem:

Key Concepts

Enzyme Structure

Active Site

Enzyme-Substrate Complex

Match the terms (2) enzyme with the following descriptions:
a. has a tertiary structure that recognizes the substrate
b. is the combination of an enzyme with the substrate
c. has a structure that fits the active site of an enzyme