Key term
AQA GCSE Combined Science Biology 8464
Bioenergetics
Cell Biology
Topic overviewEukaryotes and prokaryotesAnimal and plant cellsCell specialisation and differentiationMicroscopyChromosomes, mitosis and the cell cycleStem cells in embryos, adults and meristemsTherapeutic cloning, its risks, and cloning plantsDiffusion and the factors affecting its rateSurface area to volume ratio and exchange surfacesOsmosisActive transport
Ecology
Topic overviewLevels of organisation in an ecosystem, and what organisms needCompetition, interdependence and stable communitiesAbiotic factorsBiotic factorsAdaptationsProducers, food chains and sampling with quadrats and transectsPredators, prey and measuring population sizeHow materials are cycledWaste management and biodiversityLand use, deforestation and global warmingMaintaining biodiversity
Homeostasis and Response
Infection and Response
Inheritance, Variation and Evolution
Topic overviewSexual and asexual reproductionMeiosisDNA and the genomeGenetic terms, dominant and recessive allelesPunnett squares, probability and genetic crossesInherited disorders and sex determinationVariationEvolutionSelective breedingWhat genetic engineering is, and what it is used forGM crops, their risks, and the steps of the processEvidence for evolution, and extinctionFossilsResistant bacteriaClassification of living organisms
Organisation
Topic overviewLevels of organisation, and how enzymes workAmylase, proteases and lipasesBile, food tests and the effect of pH on amylaseThe heart, the lungs and double circulationThe pacemaker, the blood vessels and the bloodCoronary heart disease: a non-communicable diseaseHealth issuesRisk factors and causal mechanisms in diseaseSampling, correlation and interpreting risk dataCancerPlant tissues, and transpiration and its rateRoot hair cells, xylem, phloem and stomata
Organisation
Amylase, proteases and lipases
- 3 things to know
- Biology Paper 1
Overview
Where amylase, proteases and lipase are made and where they act, word equations for starch and lipid digestion, why food must be digested and absorbed into the blood, and carbohydrases, proteases and lipases with their products.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
Write a word equation for the digestion of starch by amylase.
Key term
Write a word equation for the action of lipase on a lipid.
Questions from this subtopic
Each one with the model answer underneath.
- 1
Where in the body is amylase produced?
Model answer
In the salivary glands, the pancreas and the small intestine.
- 2
Where are proteases produced?
Model answer
In the stomach, the pancreas and the small intestine.
- 3
Where is lipase produced?
Model answer
In the pancreas and the small intestine.
- 4
Which organ produces all three types of digestive enzyme?
Model answer
The pancreas.
- 5
State where the digestive enzymes made by the pancreas do their work.
Model answer
In the small intestine, into which they are released.
- 6
Write a word equation for the digestion of starch by amylase.
Model answer
Starch → sugars, with amylase as the catalyst.
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