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Cell : The Unit of Life

Mizoram Board · Class 11 · Biology

Quick revision notes for Cell : The Unit of Life — Mizoram Board Class 11 Biology. Key concepts, formulas, and definitions for last-minute revision.

97 questions25 flashcards5 concepts

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Key Topics to Revise

1

Cell Theory and Historical Background

  • Cell theory states: (i) All living organisms are composed of cells and products of cells (ii) All cells arise from pre-existing cells
  • Antonie von Leeuwenhoek first observed live cells using a microscope
  • Robert Brown discovered the nucleus in plant cells
2

Prokaryotic vs Eukaryotic Cells

  • Prokaryotic cells: No membrane-bound nucleus, genetic material freely floating in cytoplasm
  • Eukaryotic cells: Membrane-bound nucleus containing chromosomes with DNA
  • Prokaryotes include bacteria, blue-green algae, mycoplasma, and PPLO
3

Prokaryotic Cell Structure

  • Four basic bacterial shapes: bacillus (rod), coccus (spherical), vibrio (comma), spirillum (spiral)
  • Cell envelope has three layers: glycocalyx, cell wall, plasma membrane
  • Glycocalyx can be loose (slime layer) or thick (capsule)
4

Eukaryotic Cell Structure - Plant vs Animal Cells

  • Plant cells have cell wall, plastids, and large central vacuole
  • Animal cells have centrioles and smaller vacuoles
  • Both have membrane-bound nucleus and organelles

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Full Notes

Key Concepts

The cell theory statesProkaryotic cells lack a membraneThe cell membrane consists ofA coordinated system including Endoplasmic ReticulumDouble

Frequently Asked Questions

What are the important topics in Cell : The Unit of Life for Mizoram Board Class 11 Biology?
Cell : The Unit of Life covers several key topics that are frequently asked in Mizoram Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Cell : The Unit of Life — Mizoram Board Class 11 Biology?
Understand the core concepts first, then work through the 97 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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