Practice Chemical Barriers - 6.3.1.2 | Human Physiology | IB MYP Grade 12 Biology
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6.3.1.2 - Chemical Barriers

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a key function of stomach acid?

💡 Hint: Think about what happens when you eat.

Question 2

Easy

Name one chemical barrier in the human body.

💡 Hint: Consider where enzymes are found in the body.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary function of stomach acid?

  • A) To aid digestion
  • B) To kill pathogens
  • C) To absorb nutrients

💡 Hint: Think about what happens to bacteria that enter the stomach.

Question 2

True or False: Lysozymes can destroy all pathogens.

  • True
  • False

💡 Hint: Consider the variety of pathogens that exist.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Evaluate how the properties of stomach acid contribute to its effectiveness as a chemical barrier in preventing gastrointestinal infections. Incorporate specific examples.

💡 Hint: Consider the conditions that sustain bacterial life.

Question 2

Discuss the role of lysozymes in physical versus chemical barriers. Why are they categorized under chemical barriers?

💡 Hint: Reflect on the differences between blocking entry and breaking down pathogens.

Challenge and get performance evaluation