Paper 2, Higher

Describe the pathway of a reflex action when a hand touches a hot object.

Explain how blood glucose concentration is controlled after a meal.

Explain how auxin causes a shoot to grow towards light.

Explain how the body responds when its core temperature rises.

Describe how the kidney produces urine.

Explain the terms gene, allele and genotype.

Explain how natural selection could lead to the evolution of camouflaged moths.

Describe the process of selective breeding of cattle for high milk yield.

Explain why the three-domain system replaced the five-kingdom system.

Explain why a decrease in the number of rabbits could affect the population of foxes and grass.

A student placed 10 quadrats of 1 m² randomly in a field of area 1200 m² and counted 48 daisies in total. Estimate the number of daisies in the field.

Describe the processes that cycle carbon between the atmosphere and living things.

Explain how human activities reduce biodiversity and describe ways to protect it.

Describe four factors that threaten food security.

Explain how information passes across a synapse.

Compare type 1 and type 2 diabetes.

Describe three uses of plant hormones in agriculture or horticulture.

Explain why homeostasis is important for enzyme action.

Evaluate kidney transplants and dialysis as treatments for kidney failure.

Cystic fibrosis is caused by a recessive allele (f). Two carriers (Ff) have a child. Draw a Punnett square and give the probability that the child has cystic fibrosis.

Describe how fossils are formed.

Evaluate the use of genetically modified crops.

In the binomial name Panthera leo, what does 'Panthera' represent?

Describe how abiotic and biotic factors can affect a community, giving two examples of each.

A student placed 20 quadrats of 1 m² randomly in a field of area 5000 m² and counted 37 daisies in total. Estimate the number of daisies in the field.

Explain how temperature, water and oxygen affect the rate of decay.

Explain why peat bogs are important and why their destruction contributes to global warming.

Explain why eating less meat could increase food security.