1.1.2 Animal & Plant Cells

• What is a nucleus?

  An organelle which contains the cell’s genetic material in the form of DNA and controls cell activity.
• What is cytoplasm?

  A gel-like substance inside a cell where most chemical reactions occur.
• What does cytoplasm contain to control the chemical reactions occurring in it?

  Enzymes.
• What is cell membrane?

  An organelle which holds the cell together and controls what enters and exits it.
• What are mitochondria?

  Organelles where most of the reactions for aerobic respiration take place.
• What are ribosomes?

  Organelles where proteins are made.
• What is a cell wall?

  A layer of cellulose that surrounds the cell membrane providing support and protection.
• What is a vacuole?

  An organelle which stores cell sap (sugars and salts).
• What are chloroplasts?

  Organelles found in plant cells that are responsible for photosynthesis.
• What are plasmids?

  Small rings of DNA.
• Plant cells contain:

  • Nucleus
  • Cytoplasm
  • Cell membrane
  • Mitochondria
  • Ribosomes
  • Chloroplasts
  • Cell wall
  • Vacuole
• Animal cells contain:

  • Nucleus
  • Cytoplasm
  • Cell membrane
  • Mitochondria
  • Ribosomes
• Bacterial cells contain:

  • Cytoplasm
  • Cell membrane
  • Cell wall
  • DNA strand
  • Plasmids
• What structure is labelled X?

  Cell membrane.

  
• What structure is labelled X?

  Mitochondria.

  
• What structure is labelled X?

  Ribosome.

  
• What structure is labelled A?

  Plasmids.