Higher Biology 3.1

What is causing a concern for food security?

• Climate change

• Fertiliser shortages

• The corona virus

• Increase in human population

Increased food production must be...

• Productive

• Sustainable

• British

• Finite

What is defined as the ability to access food of suitable quality and quantity?

• Obesity

• Photosynthesis

• Food security

• Sustainability

Agricultural production depends on the factors that control which biosynthetic pathway?

• Photosynthesis

• Respiration

• Metabolism

• Catabolic

Which of the following may lead to an increase in food production?

• Breeding higher yielding cultivars

• Use of fertiliser

• Protecting crops from pests

• All of the above

Why are crops more productive per unit area than livestock?

• Livestock suffer disease

• Plants grow quickly

• Energy is lost between topic levels

• There is more competition between animals than plants

Light energy is absorbed by which part of the plant?

• Mitochondrial DNA

• Photosynthetic pigments

• Epidermal cells

• Stroma of the chloroplasts

Which pigments extend the range of wavelengths absorbed and passed on for photosynthesis?

• Chlorophyll a

• Chlorophyll b

• Carotenoid

• Mesophyll

What does absorbed light energy excite in the pigment molecule?

• Compounds

• Enzymes

• NADPH

• Electrons

Transfer of these electrons through the electron transport chain releases energy to generate ATP by which enzyme?

• Dehydrogenase

• ATP synthase

• RuBisCo

• Restriction endonuclease