Cells

• What is a prokaryote?

  A single-celled organism
• Is bacteria a prokaryote or eukaryote?

  Prokayote
• Are animals prokaryotes or eukaryotes?

  Eukaryotes
• Do animal or plant cells have a cell membrane but no cell wall?

  Animal
• List the 5 parts of an animal cell

  Ribosome Mitochondria Nucleus Cell membrane Cytoplasm
• What are ribosomes for?

  They make proteins
• What are the mitochondria the site of?

  Aerobic respiration
• What is the function of the nucleus?

  Controls the cell
• Does a plant or animal cell have more features?

  Plant (🅿️lant - 🅿️lenty)
• What does the cell wall contain?

  Cellulose
• What is the function of the cell wall?

  Supports the cell
• List the 8 features of a plant cell

  Ribosomes Nucleus Mitochondria Cell membrane Cell Wall Chloroplasts Vacuole Cytoplasm
• How can you remember the features of bacteria?

  The 5 S sounds
• List the 5 features of bacteria

  Cell wall, Cytoplasm, DNA strand, Plasmids, Cell membrane
• What are plasmids?

  Rings of DNA in bacteria
• Define differentiation

  The process by which a cell changes to become specialised for its job.
• What is differentiation used for?

  Repairing and replacing cells
• What is the function of a sperm cell?

  Get the male DNA to the female DNA
• Why does a sperm cell need mitochondria?

  Energy
• What features allow the sperm cell to swim effectively?

  Long tail and stream-lined
• What is the function of a nerve cell?

  To carry electrical signals
• What feature does a nerve cell have to form a network?

  Branches
• How does being long help muscle cells?

  Space to contract
• What is the function of muscle cell?

  Contraction
• Why does a muscle cell contain mitochondria?

  Energy
• What is the function of a root hair cell?

  To absorb minerals and water from the soil
• What features of a root hair cell gives it a larger surface area?

  They are long and have hair-like projections
• How do root hair cells absorb more minerals and water?

  Large surface area
• Give 4 examples of specialised cells

  Sperm cells, Nerve cells, Muscle cells, Root hair cells
• What is a tissue?

  A group of the same cells
• What is the structure in the head of a sperm cell called?

  Acrosome
• What does the acrosome in a sperm cell contain?

  Enzymes e.g. protease