Practice Chemical Barriers (6.3.1.2) - Human Physiology - IB 12 Biology
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Chemical Barriers

Practice - Chemical Barriers

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Practice Questions

Test your understanding with targeted questions

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.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

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.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

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.

Challenge 2 Hard

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.

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Reference links

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