1.1 Cells

• What are cells

  • Cells are the basic units of all living things.
• What is an organelle?

  • An organelle is a part of a cell with specialised functions.
• What organelles does an animal cell have?

  • Cell membrane
  • Nucleus
  • Cytoplasm
  • Mitochondria
  • Ribosomes
• What organelles does a plant cell have?

  • Cell wall
  • Cell membrane
  • Nucleus
  • Vacuole
  • Chloroplasts
  • Cytoplasm
  • Mitochondria
  • Ribosomes
• What organelles does a fungal cell have?

  • Cell wall
  • Cell membrane
  • Nucleus
  • Cytoplasm
  • Vacuole
  • Mitochondria
  • Ribosomes
• What organelles does a bacterial cell have?

  • Cell wall
  • Cell membrane
  • Plasmids
  • Cytoplasm
  • Ribosomes
• What is the function of the nucleus?

  • Controls cell activities and contains DNA.
• What is the function of cytoplasm?

  • Site of chemical reactions
• What is the function of mitochondria?

  • It is the site of aerobic respiration
• What is the function of the chloroplasts?

  • It is the site of photosynthesis
  • Contains chlorophyll (a green pigment)
• What is the function of the cell membrane?

  • It controls what substances can enter and exit the cell
  • It is selectively permeable
• What is the function of the cell wall?

  • It gives support to the cell
  • It is freely permeable
• What is the function of ribosomes?

  • It is the site of protein synthesis
• What is the function of a plasmid?

  • It is a small circular ring of DNA found in bacterial cells
• What is the function of the vacuole?

  • It contains cell sap and stores excess water and minerals
• What is the cell wall made up of in plant cells?

  Cellulose
• What is the unit used to measure the size of a cell?

  • Micrometers (µm)
• How many micrometers (µm) are in one millimetre (mm)

  • There are 1000 micrometers in 1 millimetre