sb2

• During what phase of the cell cycle does the cell make extra sub-cellular structures and DNA replication occurs?

  Interphase
• What are the 5 stages of Mitosis? (In the correct order)

  Prophase, metaphase, anaphase, telophase and cytokinesis
• During which phase of mitosis does the nucleus break down and spindles start to appear?

  Prophase
• During which phase of mitosis are the chromosomes copies are separated and moved to the opposite poles of the cell?

  Anaphase
• Which type of cell undergoes uncontrollable cell division (mitosis) and forms tumours?

  Cancer/ cancerous
• What is defined as an increase in size and number of cells?

  Growth
• Which process changes unspecialised cells into specialised cells?

  Differentiation
• What type of cells is found at the top of a shoot and the bottom of a root?

  Meristem
• Which two processes causes new plant cells to grow and become specialised cells?

  Elongation and differentiation
• Which cells increase the surface area to allow for osmosis and active transport?

  Root hair cells
• What are stem cells?

  undifferentiated cells
• Name two types of animal stem cells.

  Adult and embryonic
• Where are stem cells found in plants?

  Meristems
• What is the Central Nervous System (CNS) is made up of?

  brain and spinal cord
• Your body communicates using electrical signals called what?

  (Electrical) impulses
• Name the 3 types of neurone.

  Sensory, relay and motor
• Name the two types of effectors.

  Muscles and glands
• Name a type of neuron that doesn't have a dendron.

  Relay or motor
• What are the tiny gaps where one neurone meets another called?

  Synapses
• A reflex uses a neurone pathway called the reflex arc, why is this pathway faster?

  Shorter as it bypasses the brain
• Which part of the brain controls balance and posture, as well as timing and fine control of muscle activity?

  Cerebellum
• Which part of the brain controls heart rate, breathing rate and reflexes?

  Medulla oblongata
• Brain tumours are a lump of what type of cells?

  Cancerous
• Name the eye defect with the following features

  •eyeball too long

  •light is focused in front of retina

  •distant objects are blurred

  •corrected with diverging lens

  Short sight
• Name the eye defect with the following features

  •eyeball too short

  •light is focused behind retina

  •near objects are blurred

  •corrected with converging lens

  Long sight