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IB Biology HL 2.2.6 Benefits of the Nuclear Envelope Question Bank

Practise IB Biology HL 2.2.6 through the exact HL evidence on double nuclear membranes, pore-controlled exchange and separation of nuclear contents.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain how a double nuclear envelope separates the genome from cytoplasm and regulates exchange through pores.
  • Relate nuclear pore selectivity to controlled movement between nucleus and cytoplasm.
  • Use membrane structure evidence to identify the benefit of enclosing the nucleus with two membranes.

B2.2.6 (HL)—Nuclear membrane benefits question 1

[Maximum number: 1]

What is a benefit of double membranes surrounding the nuclei of eukaryotic cells?

A

They reduce the surface area of the nucleus.

B

They can easily break down into vesicles during mitosis.

C

Hydrophilic phospholipid tails can be kept away from the cytoplasm.

D

Pores are formed to allow movement of DNA from the nucleus to the cytoplasm.

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