Key term
Edexcel GCSE Combined Science Biology 1SC0
Key Concepts in Biology
Topic overviewEukaryotic and prokaryotic cellsSpecialised cells and their adaptationsMicroscopes and magnification calculationsSize, scale and units in cell biologyEnzyme action and denaturationFactors affecting enzyme activityEnzymes in synthesis and digestion, and rate calculationsDiffusion, osmosis and active transportOsmosis in potatoes and percentage change in mass
Cells and Control
Genetics
Topic overviewMeiosis and the formation of gametesDNA structure, genes and the genomeExtracting DNA from fruitAlleles, genotype and phenotypeMonohybrid crosses and sex determinationProbability and ratios from genetic crossesCauses of variation: genes and environmentThe Human Genome ProjectGenetic variation and the effects of mutation
Natural Selection and Genetic Modification
Health, Disease and the Development of Medicines
Topic overviewHealth, disease and susceptibilityPathogens and common infectionsHow pathogens spread, and the virus life cycleSexually transmitted infectionsPhysical barriers and chemical defencesThe immune system, immunisation and herd immunityAntibiotics and developing new medicinesLifestyle factors and non-communicable diseaseTreatments for cardiovascular disease
Plant Structures and Their Functions
Animal Coordination, Control and Homeostasis
Exchange and Transport in Animals
Topic overviewWhy multicellular organisms need exchange surfacesAlveoli and gas exchangeThe blood and its componentsArteries, veins and capillariesThe heart and the circulatory systemCellular respiration as an exothermic reactionAerobic and anaerobic respiration comparedInvestigating the rate of respirationCardiac output, stroke volume and heart rate
Ecosystems and Material Cycles
Health, Disease and the Development of Medicines
Lifestyle factors and non-communicable disease
- 3 things to know
- Paper 1
Overview
Non-communicable diseases caused by interacting factors, lung, liver and nutrition-related diseases, correlation and cause, calculating body mass index and waist:hip ratio, obesity and malnutrition, and how alcohol damages the liver and smoking and carbon monoxide raise the risk of cardiovascular disease.
What you need to know
Answer each one before you reveal it.
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Key term
Give four groups of non-communicable disease.
Key term
Name one non-communicable disease strongly influenced by nutrition.
Questions from this subtopic
Each one with the model answer underneath.
- 1
Explain what is meant by saying a non-communicable disease is caused by interacting factors.
Model answer
Several factors such as genes, diet, lifestyle and age combine to affect the chance of developing it, rather than one single cause.
- 2
Give four groups of non-communicable disease.
Model answer
Cardiovascular diseases, many forms of cancer, some lung and liver diseases, and diseases influenced by nutrition.
- 3
Name one non-communicable disease strongly influenced by nutrition.
Model answer
Type 2 diabetes.
- 4
Explain why two people with the same lifestyle may not both develop the same non-communicable disease.
Model answer
They inherit different genes, which change how strongly the same lifestyle factors affect them.
- 5
Name one non-communicable lung disease and give a main cause of it.
Model answer
Lung cancer, caused mainly by smoking.
- 6
Name one non-communicable liver disease and give a main cause of it.
Model answer
Cirrhosis of the liver, caused by drinking too much alcohol.
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