Natural Products
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What is the word equation for photosynthesis ?
Carbon dioxide+water>glucose +oxygen
What is the chemical equation for photosynthesis ?
CO2+H2O>C6H12O6+O2
What is the balanced equation for photosynthesis ?
6CO2+6H2O>C6H12O6+6O2
What colour is chlorophyll?
Green pigment
What does chlorophyll do?
Trap light energy from the sun and allows the reaction to take place
What happens to glucose after photosynthesis ?
Stored as starch in the plant
How are carbohydrates made?
By plants during photosynthesis
What do carbohydrates provide us with ?
Energy in our diets
What do carbohydrates contain?
Carbon, hydrogen and oxygen
What is the ratio of hydrogen and oxygen?
2:1
What 2 groups can carbohydrates be divided into?
Sugars - simple carbohydrates Starch - complex
What is the name given to glucose and fructose and what’s there formula ?
C6H12O6 monosaccharides
What solution can be used to test for sugar?
Benedict’s solution (or Fehling’s solution)
What is the colour change when Benedict’s solutions is heated with sugars?
Blue to orange
What is the exception to using benedict’s solution ?
Sucrose
What is starch?
Large molecules made of many small glucose molecules joined together
What is the name of starch and its formula ?
C6H10O5 polysaccharide
What solution is used to test for starch ?
Iodine solution
What is the colour change to iodine solution?
Brown to blue/black
What is the importance of photosynthesis ?(3)
Produces carbohydrates for energy Produces oxygen Reduces CO2 in the atmosphere
What is respiration?
Reaction between carbohydrates and oxygen in our body that gives us energy
What is the word equation for respiration?
Glucose+oxygen>carbon dioxide+water
What is the chemical equation for respiration ?
C6H12O6+O2>CO2+H2O
What is the balanced equation for respiration ?
C6H12O6+6O2>6CO2+6H2O