Game Preview

Cells

  •  English    31     Public
    IGCSE Biology Chapter 1(Cells)
  •   Study   Slideshow
  • Name the 7 characteristics of living organisms. Briefly explain them.
    1- movement. 2- respiration. 3- sensitivity. 4- growth. 5- reproduction. 6- excretion. 7- nutrition.
  •  10
  • What is a word for an organism with only one cell ?
    Unicellular
  •  10
  • Name the two types of microscopes.
    1- light microscope. 2- electron microscope
  •  10
  • How many times can a good light microscope magnify ?
    A very good light microscope can magnify up to 1500 times(x1500).
  •  10
  • Up to how much can an electron microscope magnify?
    An electron microscope is able to magnify up to 10 million times. (x10 million)
  •  10
  • What is the formula for magnification ?
    Magnification = size in drawing or photograph / size of the real object
  •  10
  • What is the cell membrane made out of?
    Protein and fat
  •  10
  • Are cell membranes present in all organisms ?
    Yes
  •  10
  • Is the cell membrane permeable or partially permeable?
    Partially permeable (it is a very thin layer)
  •  10
  • What is a cell wall made of ?
    Cellulose
  •  10
  • Do animals have a cell wall?
    No
  •  10
  • Why are cell walls important?
    It stops the cell from bursting if it absorbs a lot of water.
  •  10
  • Are cell walls fully permeable or not permeable ?
    Cell walls are fully permeable; because of the spaces between fibers of crisscrossed cellulose which allows even larger molecules to go through.
  •  10
  • What is the percentage of water in cells ?
    70%
  •  10
  • In which part of the cell do metabolic reactions occur/take place?
    In the cytoplasm.
  •  10
  • What is a vacuole surrounded by a plant cell ?
    By a membrane.
  •  10