Life processes and cells

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  • cells
    • animal cells
      • No large vacuole
      • No chloroplast
      • No cell wall
      • Many irregular shapes
    • plant cells
      • cell wall
        • gives celll support and shape
      • large vacuole
        • contains cell sap
          • cell sap- water with various things dissolved it it
      • chloroplast
        • chlorophyll absorbs light so plant can make food
          • process known as photosynthesis
      • regular shapes
    • most cells contain
      • cell membrane
        • holds the cell together
        • controls substances entering and leaving the cell
      • nucleus
        • contains  chromosomes and genes
        • controls how cell grows and works
      • mitochondria
        • where energy is released from food
          • process known as respiration
      • cytoplasm
        • where chemical reactions take place
    • specialized cells
      • have special features to help them carry out a certain job
        • sperm cell
          • tail which moves so it can swim
          • has many  mitochondria to give it energy for swimming
          • acrosome contains a digestive enzyme that makes a hole in the eggs cell membrane so the sperm can enter the egg
          • nucleus contains chromosomes which carry genetic information that will be passed down to the off spring
        • red blood cell
          • no nucleus
          • small
          • flexible
          • large numbers
          • hemoglobin
          • biconcave disc shape
  • differences
    • animal cells
      • No large vacuole
      • No chloroplast
      • No cell wall
      • Many irregular shapes
    • plant cells
      • cell wall
        • gives celll support and shape
      • large vacuole
        • contains cell sap
          • cell sap- water with various things dissolved it it
      • chloroplast
        • chlorophyll absorbs light so plant can make food
          • process known as photosynthesis
      • regular shapes
  • Life processes and cells
    • cells
      • most cells contain
        • cell membrane
          • holds the cell together
          • controls substances entering and leaving the cell
        • nucleus
          • contains  chromosomes and genes
          • controls how cell grows and works
        • mitochondria
          • where energy is released from food
            • process known as respiration
        • cytoplasm
          • where chemical reactions take place
      • specialized cells
        • have special features to help them carry out a certain job
          • sperm cell
            • tail which moves so it can swim
            • has many  mitochondria to give it energy for swimming
            • acrosome contains a digestive enzyme that makes a hole in the eggs cell membrane so the sperm can enter the egg
            • nucleus contains chromosomes which carry genetic information that will be passed down to the off spring
          • red blood cell
            • no nucleus
            • small
            • flexible
            • large numbers
            • hemoglobin
            • biconcave disc shape
    • organisations
      • nervous
      • immune
      • respiratory
      • excretory
      • circulatory
      • digestive
      • skeletal
      • system
        • organs
          • tissue
    • Transport
      • 3 different ways
        • diffusion
        • osmosis
        • Active transport
      • diffusion
        • high concentration to areas of low concentration.
          • concentration gradient
        • stops when particles are evenly concentrated
        • difference in concentration
        • particles are constantly moving

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