Practice Cell Envelope (5.1.1) - Theme A: Unity and Diversity - IB 11 Biology
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Cell Envelope

Practice - Cell Envelope

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the primary component of the bacterial cell wall?

💡 Hint: Think about what gives the wall its strength.

Question 2 Easy

What color do Gram-positive bacteria appear after gram staining?

💡 Hint: They retain the first dye used in the staining process.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What type of bacteria retains crystal violet stain?

Gram-positive
Gram-negative
Both

💡 Hint: Think about which type of bacteria is structurally more robust.

Question 2

True or False: All bacteria have a capsule.

True
False

💡 Hint: Recall that some bacteria may only have a slime layer.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Propose a hypothesis about how antibiotics targeting peptidoglycan would affect Gram-positive versus Gram-negative bacteria differently.

💡 Hint: Consider the composition and protection each type provides.

Challenge 2 Hard

Consider a scenario where a bacterial strain acquires a capsule. Predict the possible effects this change may have on its virulence and explain your reasoning.

💡 Hint: Think about the protective functions of the capsule in the context of host interactions.

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Reference links

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