plants, photosynthesis and respiration name _____________________
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Plants, photosynthesisPlants, photosynthesisandand
respirationrespiration
Name _____________________
_________ travels up from the roots
SUNLIGHTGives the plant _________
The green chemical that _______ the light is called chlorophyll
Things needed for Things needed for photosynthesisphotosynthesis
_______ ________ gas comes from the air.
Words: water, traps, energy, carbon dioxide
_________ gas goes into the air. This is important because animals need it for breathing.
Things made by Things made by photosynthesisphotosynthesis
Plants make the carbohydrate called ______________. This is important as a food for animals.
Words: oxygen, glucose
Carbon dioxide + _____ glucose + _____
6CO2 + 6H20 C6H12O6 + 6O2
Sunlight
Chlorophyll
Sunlight
Chlorophyll
Plants store the GLUCOSE produced by photosynthesis by joining it together in a ____________ reaction to make ____________
Words –starch, water, oxygen, polymerisation
Photosynthesis equationsPhotosynthesis equations
RespirationRespiration
Words: carbon dioxide, energy, water, oxygen, glucose
Respiration is the opposite of photosynthesis. It is a reaction that makes _______ for living things by reacting glucose and oxygen.
________ comes from the food and _________ comes from the air.
_________ __________ gas and ________ are breathed back out.
Gas ExchangeGas Exchange
Air breathed in Air breathed out
79% 79%
21% 18%0.03%
3%
The amounts of gases we breathe in and breathe out are not the same.
Photosynthesis and Photosynthesis and RespirationRespiration
Respiration
Photosynthesis
Glucose + oxygen water + carbon dioxide
Water + carbon dioxide glucose + oxygen
Global warmingGlobal warming
Words: fossil fuels, cut, same, global warming
It is important that the processes of photosynthesis and respiration are balanced to make sure the levels of oxygen and carbon dioxide in the air stay the _____. Too much carbon dioxide can cause _______ ________.
The amount of carbon dioxide in the air is getting higher because of two main reasons.
More trees are being _______ down so they do not absorb so much carbon dioxide.
We are burning more _______ ________ like petrol and this makes carbon dioxide.
Using plants for foodUsing plants for food
Fruits and seeds
Roots
Leaves
Stems
Helping plants to growHelping plants to growFarmers can use a number of chemicals to help plants to grow:1) ____________
Provide nutrients The elements plants need are __________, ___________ and __________
NPK
2) ____________
Kill weeds
3) _____________
Kill pests like greenfly
4) _____________
Kill bacteria and prevents plant
diseases.Words: herbicides, potassium, pesticides, nitrogen, fungicides, fertilisers, phosphorus
disadvantages of pesticidesdisadvantages of pesticides
Although the level of insecticides in the plants is small, it will build up through the food chain due to the number of organisms in each stage.
Small plants KingfisherMarine insects
Fish
Pesticides are toxic chemicals so care needs to be taken when they are being used. They can also get into our food by being washed into rivers and streams and moving into the food chain.
Food typesFood types
____________
Water
____________
_____________
_____________
_____________
_____________
UsesUsesFound inFound inTypeType
Bread, potatoes, cereal
Cream, butter, milk, oil
Meat, fish, eggs
Fruit and vegetables
Milk and cereals
Fruit + veg, + cereals
Water!
Energy
Storing concentrated energy
growing and repairing cells
Keep use healthy
Strong teeth and bones
70% of the body is water
Keeps the gut moving
Words: fats, minerals, proteins, carbohydrates, vitamins, fibre
Testing for starchTesting for starch
starch
Iodine goes _________
iodineiodine
Starch makes iodine go __________________
Testing for sugarsTesting for sugars
sugar
Benedict’s solution
Sugars makes warm benedict’s solution change from_________ to _______. The only sugar that doesn’t do this is _________.
Benedict’s solution goes ________
Heat up in warm water
The digestive systemThe digestive systemThe whole point of digestion is to break up our food into small enough molecules that can get into our ________.
The main foods affected are
starch – this is broken up into _________
proteins - these are broken up into _______ ________
Words: amino acids, glucose, blood,
EnzymesEnzymesEnzymes are special _________ that are found in living things. They help break the food into ________ pieces which can then pass into the blood. There are various types of enzymes.
Amylase breaks _________ up into glucose:
Protease breaks _______ into amino acids:
Lipase breaks fats into fatty acids and glycerol:
Words: catalysts, proteins, starch, smaller