l3:specialised cells

• what is growth?


  Increase
• what is development?


  The process of growth and progress
• what is a zygote?


  Fertilized egg.
• what is differtiation?


  process where stem cells becomes specialised to do a certain job
• what is a stem cell?


  undifferatiated or unspecialised cells that can become any type of cell
• what does a zygote need to do inorder to become a blacocyst?

  cells need to divide
• why are stem cells amazing?


  they can become any type of body cell
• what is gene regulation?


  turned on/off to specialise
• what is the function of a red blood cell?


  Transport oxygen
• give 3 adaptaions and the cells reason for having them for red blood cells?


  1. Biconcave shape - increases surface area for gas exchange. 2. Lack of nucleus - more space for hemoglobin, increasing oxygen-carrying capacity. 3. Flexible membrane - allows cells to squeeze through narrow capillaries.
• what is the function of a white blood cell?


  Immune defense
• give 2 adaptions and tye cells reason for having them for white blood cells?


  flexable-to squeeze through blood vessels

  produces proteins to remive microrganisms