The human population is increasing and this increases demand for food. Farmers can alter genes, control pests and ensure acceptable well-being to increase yields of plants and livestock.
Food security is a worldwide problem, what factors affect food security?
Access, quantity and quality
Distribution, cost and type of food
Restaurants, supermarkets and farmers
Light energy is captured by the photosynthetic pigments. What is the light used for?
Regeneration of ATP and to reduce carbon dioxide
Regenerate ATP and to split water
Split water and oxidise glucose
What does the carbon fixation stage require?
ATP, NADPH2 and CO2
ATP, NADP and hydrogen
ATP, hydrogen and oxygen
In photosynthesis, what is the function of the accessory pigments?
Receive light energy from chlorophyll for the photolysis of water
Allow the plant to absorb a wider range of wavelengths of light
Allow photosynthesis to take place at low light intensities
What is the second stage of photosynthesis?