Which two substances bind using a lock-and-key mechanism?

Step 1: Define the Problem

Identify the key components of the question that need to be addressed:

• Determine which two substances interact using a lock-and-key mechanism.

Step 2: Break Down the Problem

Divide the problem into smaller, manageable parts:

• Understand the lock-and-key mechanism.
• Identify substances that typically use this mechanism.

Step 3: Apply Relevant Concepts

Use appropriate academic theories or formulas to solve each part of the problem:

• The lock-and-key mechanism is a model for enzyme-substrate interaction.
• Enzymes and substrates are the two substances that bind using this mechanism.

Step 4: Analysis, Verify and Summarize

Analyze each part in detail if necessary, carry out the calculations by steps. Verify the calculations result and summarize the findings:

• The lock-and-key model suggests that the enzyme's active site (lock) is complementary in shape to the specific substrate (key), allowing them to bind precisely.

Final Answer

Enzymes and substrates bind using a lock-and-key mechanism.