Cells

• What is the resolution of a microscopic?


  The ability of a microscopic to distinguish fine detail of a image
• Why is electron microscope used instead of a light microscope

  An electron microscope has a higher resolution
• What equation is used to calculate magnification?


  Magnification =image/actual
• Where in cell would u find chromosomes?


  Nucleus
• What is the function of the nucleus?

  Control all cell activities
• Function of chromosome?

  threadlike structure found in nucleus. Made of dna
• Function of cytoplasm?

  Chemical reactions take place here
• Function of mitochondria?

  site of cell respiration.
• function of membrane?


  Allows things to enter and leave cell
• Function of nuclear membrane?


  surrounds nucleus
• Function of cell wall?

  supports the cell
• Function of large vocuole?

  contain cell sap
• Function of chloroplast?

  Contains chlorophyll, a green pigment that traps light for photosynthesis
• What is stem cell?

  A cell that divide and become any type of cell
• Source of embryonic stem cell..

  Umbilical cord
• Souce of adult stem cell..

  Bone marrow
• Where are stem cells found and plants?

  meristem at the apices of root and stem
• What is a clone?

  Genetically identical cells
• What is specialised cell?

  sales with structures that adapt to a particular function
• What is leukaemia?

  cancer of white blood cells
• Where are white blood cells produced?

  Bone marrow
• Describe the two stages of the treatment of leukaemia using stem cells

  First using chemotherapy and radio station to destroy the cancerous wbc. Second stage transparent of bone marrow stem cells.
• List the risks involving leukaemia treatment

  Chemotherapy and radiotherapy destroy the patient healthy WBC to leave them with no immune system. Transfer of diseases or viruses from other animals.
• What’s Pier Review?

  Process of validation works scientist, review research and provide feedback
• Rearrange system, Organ, cell, orgaisms, tissue starting with small

  Cell, tissue, organ, system, organism
• What is diffusion?

  Movement of molecules from a high concentration to a low concentration
• Give examples of substances transported by diffusion

  Oxygen, carbon dioxide, water, dissolved nutrients molecules
• What is three factors of the fact of the rate of diffusion

  Temperature, surface area and concentration gradient