Question 1

Question 2How is a prokaryotic cell different from a eukaryotic cell?

Accepted Answer

Prokaryotic cellEukaryotic cellCells contain primitive and undefined nucleus. Nuclear membrane is absent.Have a well-defined nucleus along with a nuclear membraneMembrane bound cell organelles are absent.Membrane bound cell organelles are present.Example – Blue-green algae.Example – Humans

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  Science | Chapter 5: The Fundamental Unit of LifeWeb Content &mdash; Quick Reference
  
    Chapter 5: The Fundamental Unit of Life &mdash; Quick Reference

cell theory
      cell organelles
      plasma membrane
      osmosis
      plant cell
      animal cell
      nucleus
      mitochondria

Quick Revision Points
      
        Cell theory: all organisms made of cells; cell = basic unit; cells from pre-existing cells
Prokaryotic (no nuclear membrane, bacteria) vs Eukaryotic (true nucleus, plants/animals)
Plasma membrane: selectively permeable, lipid bilayer
Osmosis: water from dilute → concentrated through semipermeable membrane
Organelles: Nucleus (control), Mitochondria (powerhouse), ER (transport), Golgi (packaging), Lysosomes (suicide bags), Plastids (photosynthesis), Vacuoles (storage)
Plant cell: cell wall, large vacuole, plastids present. Animal cell: no cell wall, centrioles present

Exam Tips for Chapter 5
      
        Read the detailed chapter notes for complete coverage of all NCERT topics.
        Practice all NCERT in-text and back exercise questions &mdash; they are frequently asked in exams.
        Focus on comparison tables, diagrams, and definitions &mdash; these are high-scoring areas.
        For numericals (if applicable), practice at least 20 problems of varying difficulty.
        Refer to the practice question bank (200+ questions) for thorough preparation.

Related Resources
      
        Detailed Notes: ch05-the-fundamental-unit-of-life.html
        Practice Questions: 100+ questions with answers in 05-practice-questions/
        Chapter Test: 30-mark test paper in 06-tests/chapter-tests-30marks/
        Formula Sheet: Complete formula reference in 03-teacher-aid/formula-sheet.html

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Question 2

Question 4What would happen to the life of a cell if there was no Golgi apparatus?

Accepted Answer

The absence of Golgi apparatus will have the following consequences for the cell:It would severely impact the cell's ability to modify, sort, and transport proteins and lipids, leading to disruptions in various cellular processes ultimately leading to cell death.Without Golgi apparatus, the lysosomes might not form properly, leading to cellular waste buildup and potential toxicity.