SUTHERLAND HIGH SCHOOL GRADE 8 NS 2019 CAPS Respiration SUTHERLAND HIGH SCHOOL GRADE 8 NS 2019 CAPS TB pg. 11

TB pg. 11 SUNLIGHT OXYGEN CARBON DIOXIDE GLUCOSE WATER GLUCOSE ENERGY

TB pg. 11 ALL living organisms need energy to survive. In photosynthesis: green plants produce glucose (food). Carbon dioxide + Water Glucose + Oxygen CO2 + H2O C6H12O6 + O2 This glucose is stored as potential energy. Chlorophyll Sunlight Chlorophyll Sunlight TB pg. 11

The energy can be released by the plant, in a series of chemical reactions. In respiration, plants and animals break down glucose and release carbon dioxide, water and energy. Glucose + oxygen carbon dioxide + water + energy C6H12O6 + O2 CO2 + H2O + energy Write down TB pg. 11

Opposite processes TB pg. 11

TB pg. 11 PHOTOSYNTHESIS CO2 + H2O C6H12O6 + O2 RESPIRATION C6H12O6 + O2 CO2 + H2O + energy TB pg. 11

During photosynthesis, plants use energy from the Sun to produce . During respiration food is broken down and is released. TB pg. 11

DO WE REALLY RELEASE CARBON DIOXIDE? Activity 6 pg. 13: Test for presence of carbon dioxide in exhaled air TB pg. 13

ACTIVITY Do activity 5 on Page 12 Do Topic revision on page 14 TB pg. 12 &14