AP Biology Enzymes Lesson

Multiple Choice

The process of creating chemical bonds, building molecules, and storing energy is known as

• anabolism

• catabolism

• metabolism

• Gibbs Free Energy

Multiple Choice

The process of breaking chemical bonds, creating monomers, and releasing energy is known as

• anabolism

• catabolism

• metabolism

• Gibbs Free energy

Multiple Choice

The combination of anabolism and catabolism is known as

• endergonic reactions

• exergonic reactions

• Gibbs Free energy

• metabolism

Fill in the Blank

95% of the time, you will know a molecule is a protein-based enzyme if it ends in...

Draw

Draw the corresponding number of the term to label the diagram provided.

Terms to use:

1. 1. enzyme

2. 2. substrate

3. 3. enzyme-substrate complex

4. 4. active site

5. 5. allosteric site

6. 6. product

*Hint: allosteric site is unlabeled on the diagram

Copy & paste the provided link below into a separate internet tab to watch the review video about enzyme structure

​https://www.youtube.com/watch?v=qgVFkRn8f10

​Enzymes v. Concentration Analogy!

Imagine that your hands are enzymes and socks from the laundry pile are substrates that your enzyme hands can work on to create a sock-pair-chemical bond.

Now, in this scenario, all of the socks are the same size and brand so you don't have to search for matching pairs - they all match. Your job as an enzyme is to simply fold them together.

If there is only you and your one set of hands - you will have a rapid rate of sock-pairing when you first start because there are a lot of socks and it is easy to grab unpaired socks. As you work, however, your rate of sock pairing will slow over time as it becomes harder to reach/find unpaired socks mixed in with all the pairs. Eventually all the socks will be paired and your rate will have peaked and stabilized.
This is like ONE enzyme and MANY substrate molecules.

If there are many people and enzyme hands with few pairs of socks to match, the rate will be faster and level off more quickly.
This is like MANY enzymes and FEW substrate molecules

Open Ended

Explain, in your own words, how substrate concentration can impact enzyme reaction rates. Provide an image from the internet to enhance your explanation.

Open Ended

What was happening in the graph on the previous slide? Explain in your own words.

​Denatured enzyme:

​Normal enzyme shape:

If an enzyme is exposed to an environment that is not favorable... it will effect the chemical bonds that hold the protein enzyme together. When that happens....

The enzyme DENATURES!!!

Copy & Paste the provided link below into a separate internet tab to review how environmental factors can affect enzyme reaction rates.

​https://www.youtube.com/watch?v=6EDBlowVST0

Open Ended

In your own words, why is the shape of an enzyme so important? Be sure to address the specific nature AND functionality of an enzyme.