Let’s go through each question one by one.
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Q.2: True or False?
1.
“Enzymes speed up reactions by increasing the activation energy of a reaction.”
→ This is
False.
Enzymes actually *lower* the activation energy — that’s how they make reactions happen faster. If you increase activation energy, the reaction slows down! So this statement is backwards.
2.
“Different types of enzymes have different shapes and functions.”
→ This is
True.
Each enzyme has a unique shape (like a lock) that fits only specific molecules (keys). That’s why lactase breaks down lactose but not sugar in general — it’s shaped for just that job.
3.
“Enzymes are destroyed after each chemical reaction.”
→ This is
False.
Enzymes are reusable! They help the reaction happen, then let go of the products and can be used again — like a tool you don’t throw away after one use.
✔ So Q.2 answers:
1. F
2. T
3. F
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Q.3: Label the diagram using these words: Products, Substrate, Enzyme, Active Site
Looking at the model:
- The big blue bowl-shaped thing is the
Enzyme.
- The part inside the enzyme where the substrate fits is called the
Active Site.
- The molecule that fits into the enzyme (the two hexagons stuck together on the left) is the
Substrate.
- After the bond breaks, the two separate pieces (labeled 1 and 2) are the
Products.
So labeling from top to bottom, left to right as shown:
Top-left box (above the two connected shapes): →
Substrate
Middle-left box (pointing to the indentation in the enzyme): →
Active Site
Top-right box (above the separated shapes labeled 1 and 2): →
Products
Bottom-right box (below the empty enzyme): →
Enzyme
Wait — actually, looking again at the arrows and layout:
The diagram shows:
Left side:
- Top: Two connected shapes → labeled with bracket → should be “Substrate”
- Bottom: Blue enzyme with pocket → labeled with bracket → should be “Active Site”
Center: “Enzyme-Substrate Complex” already labeled.
Right side:
- Top: Separated shapes 1 and 2 → labeled with bracket → should be “Products”
- Bottom: Empty enzyme → labeled with box below → should be “Enzyme”
Yes, that matches.
✔ So Q.3 labels:
- Top-left: Substrate
- Middle-left: Active Site
- Top-right: Products
- Bottom-right: Enzyme
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Q.4: Enzymes are made up of ________.
Options:
a) monosaccharides → those are sugars (carbs)
b) fatty acids → fats
c) amino acids → yes! Proteins are made of amino acids, and enzymes are proteins.
d) glycerol → part of fats
✔ Correct answer:
c) amino acids
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Final Answer:
Q.2: 1. F, 2. T, 3. F
Q.3: Top-left = Substrate; Middle-left = Active Site; Top-right = Products; Bottom-right = Enzyme
Q.4: c) amino acids
Parent Tip: Review the logic above to help your child master the concept of enzymes worksheet.
