Fundamentals of Cell Structure and Function

Estratto della scheda di revisione

Cell Biology Revision Sheet

1. 📌 Essentials

  • All living organisms are composed of cells, the fundamental units of life.
  • Cells are classified into prokaryotic (no nucleus) and eukaryotic (nucleus present).
  • The nucleus contains genetic material and controls cellular activities.
  • Organelles like mitochondria produce energy;osomes synthesize proteins.
  • The cell membrane is a phospholipid bilayer regulating substance exchange- Cell walls provide structural support; composition varies (cellulose, chitin, peptidoglycan).
  • Cytoskeleton maintains cell shape and facilitates intracellular transport.
  • Prokaryotic DNA is in the cytoplasm; eukaryotic DNA is in the nucleus.
  • Lysosomes degrade waste; vacuoles store nutrients and maintain turgor in plants.
  • Chloroplasts perform photosynthesis in plant cells.

2. 🧩 Key Structures & Components

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Anteprima del quiz

1. What is the fundamental principle of cell theory?

2. What is the primary function of the nucleus in eukaryotic cells?

3. Which of the following correctly distinguishes prokaryotic from eukaryotic cells?

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Anteprima delle flashcard

Cell theory — principles?

All living things are made of cells.

Cells — basic units?

Fundamental units of life.

Prokaryotic vs eukaryotic — difference?

Prokaryotes lack a nucleus; eukaryotes have one.

Prokaryotic vs eukaryotic — difference?

Prokaryotic: no nucleus; Eukaryotic: nucleus present.

Mitochondria — function?

ATP production via cellular respiration.

Nucleus — role?

Contains genetic material, controls activities.

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