paper 1

Subdecks (2)

Cards (47)

  • Photosynthesis equation
    1. Carbon dioxide + water = glucose + oxygen
    2. CO2 + H2O = C6H12O6 + O2
  • respiration involves breathing, gas exchange and transport
    • phloem transports dissolved sugars from the leaves to the rest of the plant
  • xylem transports water and mineral ions from the roots to the leaves
  • transpiration is the evaporation/loss of water/diffusion from the outside of the plants leaves to the inside
  • translocation is the movement of sugars and amino acids from the leaves to the rest of the plant
  • rate of transpiration is affected by: temperature, humidity, light intensity, air flow
  • diffusion is the movement of particles from an area of high concentration to an area of low concentration-down a concentration gradient
  • osmosis :movement of water particles down a concentration gradient across a semi permeable membrane-from an area of high to low concentration
  • active transport: movement of particles from a low concentration to a high concentration against a concentration gradient
  • cell: a basic unit of structure and function in living organisms that is capable of performing life functions
  • tissue: a group of cells with a similar structure and function, working together to carry out a particular function
  • organ: a group of tissues that work together to perform a specific function
  • organ system: a group of organs that work together to perform a specific function
  • mitosis: the process of cell division that results in two identical daughter cells
  • respiration: the process of transferring energy from glucose to the cell's molecules
  • anaerobic respiration equation: glucose ---> lactic acid + energy
  • aerobic respiration equation: glucose + oxygen -> carbon dioxide + water
  • aerobic respiration: happens in the mitochondria and in the presence of oxygen
  • anaerobic respiration definition : happens in the absence of oxygen, produces lactic acid
  • mouth= mechanical- digestion, absorption, and secretion of saliva, and taste
  • mouth=chemical-salivary glands, mechanical-tongue, sensory-taste buds
  • liver=produces bile an detoxifies harmful chemicals
  • gall bladder = stores bile produced in the liver
  • pancreas=produces pancreatic fluids containing digestive enzymes
  • large intestine= reabsorbs excess water into blood, pH 7, 1.5m long
  • small intestine= 7m long, food molecules are absorbed into blood through villi
  • stomach=hydrochloric acid pH2, protease enzymes are secreted, muscles contract - acid kills pathogens
  • oesophagus= stretches with food, muscular tube pushing down food due to contractions ( peristalsis )
  • to test for starch what is the chemical used?
    iodine solution