Subjects
Biology
Chemistry
AP Chemistry
English
AP English Literature
AP Biology
Dec 2, 2025
48
4 pages
Enzymes are the biological superheroes that speed up chemical reactions in your body. These protein molecules have specific... Show more
Enzymes are biological catalysts that accelerate chemical reactions in living organisms. Think of them as specialized workers in your body's chemical factory, making reactions happen thousands of times faster than they would on their own.
The basic enzyme reaction follows a simple pattern an enzyme binds to a substrate (the starting material), forms an enzyme-substrate complex, and then releases the products while remaining unchanged itself.
Enzymes are primarily proteins, although some RNA molecules can also act as catalysts. As proteins, enzymes are made up of amino acids connected by peptide bonds, giving them their unique properties.
💡 Quick Fact A single enzyme molecule can process thousands of substrate molecules per second, making them incredibly efficient at their jobs!
The primary structure of an enzyme is simply the specific sequence of amino acids that forms the protein. This sequence is determined by your DNA and serves as the blueprint for the enzyme.
Moving up in complexity, enzymes develop secondary structures like alpha helices (spiral shapes) and beta sheets (flat, pleated sections). These formations are stabilized by hydrogen bonds and give the enzyme its basic framework.
The tertiary structure is the complete 3D shape of the enzyme, formed when the protein folds upon itself. This folding is maintained through various interactions between amino acid side chains, including hydrogen bonding, ionic interactions, and hydrophobic interactions .
🔍 Connection Point The shape of an enzyme is directly related to its function—just like how the shape of a key determines which lock it can open!
Some enzymes aren't content to work alone. They form quaternary structures by combining multiple protein subunits into one functional complex. These complex enzymes might also incorporate additional helper molecules called cofactors or prosthetic groups.
The most important part of any enzyme is its active site—a specialized pocket or groove where the substrate binds and the reaction occurs. Think of it as the enzyme's workshop, specifically designed for its particular job.
Enzymes are incredibly picky about what they work with. This substrate specificity means an enzyme can only catalyze certain reactions with specific molecules that fit into its active site. This selectivity is crucial for maintaining order in the complex chemistry of living cells.
🧩 Remember This Your body contains thousands of different enzymes, each specialized for a particular reaction—this specificity is what allows your cells to control their chemistry with amazing precision!
The induced fit model explains how enzymes actually interact with their substrates. Rather than being rigid structures, enzymes are flexible. When a substrate approaches, the enzyme's active site adjusts its shape to fit the substrate perfectly, like a hand molding around an object it's grabbing.
This shape-shifting ability enhances the enzyme's catalytic activity and improves the interaction between enzyme and substrate. Once the reaction is complete, the products are released, and the enzyme returns to its original shape, ready to work again.
Understanding enzyme structure is critical for medicine, biotechnology, and food science. Many diseases result from enzyme deficiencies or malfunctions, and many medications work by targeting specific enzymes.
🔬 Real-World Application When you take a lactase supplement because you're lactose intolerant, you're replacing an enzyme your body doesn't make enough of. This shows how understanding enzyme structure and function can directly improve our lives!
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
4
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Biomolecules
AP BiologyUnit 3 Review
AP Biologya complete overview of ap bio unit 3 based off the ap daily videos
AP BiologyEnzymes
AP BiologyReviews lysosomes for AP Biology
AP BiologyReviews the digestive system for AP Biology
AP BiologyApp Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Enzymes are the biological superheroes that speed up chemical reactions in your body. These protein molecules have specific structures that allow them to recognize and transform specific substances. Without enzymes, most biological reactions would be too slow to sustain life.
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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Enzymes are biological catalysts that accelerate chemical reactions in living organisms. Think of them as specialized workers in your body's chemical factory, making reactions happen thousands of times faster than they would on their own.
The basic enzyme reaction follows a simple pattern: an enzyme binds to a substrate (the starting material), forms an enzyme-substrate complex, and then releases the products while remaining unchanged itself.
Enzymes are primarily proteins, although some RNA molecules can also act as catalysts. As proteins, enzymes are made up of amino acids connected by peptide bonds, giving them their unique properties.
💡 Quick Fact: A single enzyme molecule can process thousands of substrate molecules per second, making them incredibly efficient at their jobs!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The primary structure of an enzyme is simply the specific sequence of amino acids that forms the protein. This sequence is determined by your DNA and serves as the blueprint for the enzyme.
Moving up in complexity, enzymes develop secondary structures like alpha helices (spiral shapes) and beta sheets (flat, pleated sections). These formations are stabilized by hydrogen bonds and give the enzyme its basic framework.
The tertiary structure is the complete 3D shape of the enzyme, formed when the protein folds upon itself. This folding is maintained through various interactions between amino acid side chains, including hydrogen bonding, ionic interactions, and hydrophobic interactions .
🔍 Connection Point: The shape of an enzyme is directly related to its function—just like how the shape of a key determines which lock it can open!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Some enzymes aren't content to work alone. They form quaternary structures by combining multiple protein subunits into one functional complex. These complex enzymes might also incorporate additional helper molecules called cofactors or prosthetic groups.
The most important part of any enzyme is its active site—a specialized pocket or groove where the substrate binds and the reaction occurs. Think of it as the enzyme's workshop, specifically designed for its particular job.
Enzymes are incredibly picky about what they work with. This substrate specificity means an enzyme can only catalyze certain reactions with specific molecules that fit into its active site. This selectivity is crucial for maintaining order in the complex chemistry of living cells.
🧩 Remember This: Your body contains thousands of different enzymes, each specialized for a particular reaction—this specificity is what allows your cells to control their chemistry with amazing precision!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The induced fit model explains how enzymes actually interact with their substrates. Rather than being rigid structures, enzymes are flexible. When a substrate approaches, the enzyme's active site adjusts its shape to fit the substrate perfectly, like a hand molding around an object it's grabbing.
This shape-shifting ability enhances the enzyme's catalytic activity and improves the interaction between enzyme and substrate. Once the reaction is complete, the products are released, and the enzyme returns to its original shape, ready to work again.
Understanding enzyme structure is critical for medicine, biotechnology, and food science. Many diseases result from enzyme deficiencies or malfunctions, and many medications work by targeting specific enzymes.
🔬 Real-World Application: When you take a lactase supplement because you're lactose intolerant, you're replacing an enzyme your body doesn't make enough of. This shows how understanding enzyme structure and function can directly improve our lives!
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
4
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Biomolecules
AP BiologyUnit 3 Review
AP Biologya complete overview of ap bio unit 3 based off the ap daily videos
AP BiologyEnzymes
AP BiologyReviews lysosomes for AP Biology
AP BiologyReviews the digestive system for AP Biology
AP BiologyApp Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Algebra
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Overige