Enzymes - Worksheet | Distance Learning - Free Printable

I'll solve the questions in the image step by step.

Q2: True/False Statements about Enzymes

Let me analyze each statement:

1. "Enzymes speed up reactions by increasing the activation energy of a reaction."
- This is FALSE. Enzymes actually LOWER the activation energy, not increase it. They provide an alternative pathway for the reaction with a lower energy barrier.

2. "Different types of enzymes have different shapes and functions."
- This is TRUE. Enzymes are highly specific due to their unique 3D shapes (active sites) that match their specific substrates. Different enzymes catalyze different reactions.

3. "Enzymes are destroyed after each chemical reaction."
- This is FALSE. Enzymes are catalysts and are not consumed or destroyed in the reactions they catalyze. They can be reused multiple times.

Q3: Labeling the Enzyme-Substrate Model

Looking at the diagram:
- The top left shows two molecules (red hexagon and yellow pentagon) bound together - this represents the SUBSTRATE.
- The blue structure with the complementary shape is the ENZYME.
- The area where the substrate binds to the enzyme is the ACTIVE SITE.
- The separate red and yellow shapes on the right are the PRODUCTS after the reaction.

So the labels should be:
- Top left box: Substrate
- Bottom left box: Enzyme
- Right side (top): Products
- Right side (bottom): Active Site

Q4: What are enzymes made of?

Enzymes are proteins (with some exceptions being RNA molecules called ribozymes). Proteins are made up of amino acids.

Therefore, the correct answer is: c) amino acids

Final Answers:

Q2:
1. F (False)
2. T (True)
3. F (False)

Q3:
- Top left box: Substrate
- Bottom left box: Enzyme
- Right side (top): Products
- Right side (bottom): Active Site

Q4:
c) amino acids