Key term
Eduqas A-Level Biology A400QS
Biological Molecules
Cell Structure and Organisation
Cell Membranes and Transport
Enzymes
Nucleic Acids and Their Functions
Importance of ATP
Photosynthesis
Respiration
Microbiology
Population Size and Ecosystems
Topic overviewPopulation growth and its measurementThe population growth curve and carrying capacityDensity dependent and density independent factorsSampling abundance and distributionEcosystems, habitats and communitiesEnergy transfer and pyramids of biomassSuccessionDecomposition and the carbon cycleThe nitrogen cycle and human interventionEutrophication and the effects of drainage
Human Impact on the Environment
Classification and Biodiversity
Topic overviewThe need for classification and the taxonomic hierarchyThe three domain and five kingdom systemsCharacteristic features of the five kingdomsAssessing relatedness by physical features and biochemistryThe species concept and the binomial systemBiodiversity, adaptation and natural selectionMeasuring biodiversity in a habitatGenetic and molecular measures of biodiversity
Mitosis and Meiosis
Sexual Reproduction in Humans
Sexual Reproduction in Plants
Inheritance
Variation and Evolution
Application of Reproduction and Genetics
Topic overviewThe Human Genome Project, other sequenced genomes and genomics in healthcareScreening embryos, stem cells and the ethical issuesGenetic fingerprinting, PCR and electrophoresis in forensic workRecombinant DNA and the production of human insulinGenetically modified crops and gene therapy
Adaptations for Gas Exchange
Topic overviewSurface area to volume ratio and gas exchange in small organismsSpecialised respiratory surfaces and the need for ventilationGills and counter current flow in bony fishThe human breathing system and its histologyVentilation and gas exchange in humansThe insect tracheal systemThe angiosperm leaf, stomata and gas exchange
Adaptations for Transport
Topic overviewVascular systems compared across animal groupsThe mammalian heart and blood vesselsThe cardiac cycle and its controlBlood, haemoglobin and dissociation curvesThe Bohr effect, chloride shift and tissue fluidThe root and the uptake of waterThe endodermis and the entry to the xylemXylem, transpiration and cohesion-tensionThe potometer and xerophytes and hydrophytesPhloem and translocation
Adaptations for Nutrition
Homeostasis and the Kidney
The Nervous System
Immunology and Disease: Disease and Its TransmissionImmunology
Immunology and Disease: AntibioticsImmunology
Immunology and Disease: The Immune ResponseImmunology
Human Musculoskeletal Anatomy: Skeletal TissuesMusculoskeletal
Topic overviewCartilage and its three typesThe composition and functions of compact boneBone remodelling and the Haversian systemRickets, osteomalacia, osteoporosis and brittle bone diseaseThe structure of skeletal muscleThe sliding filament theoryFast and slow twitch fibres, and energy for contraction
Human Musculoskeletal Anatomy: Structure and Function of the SkeletonMusculoskeletal
Human Musculoskeletal Anatomy: JointsMusculoskeletal
Neurobiology and Behaviour: The BrainNeurobiology
Neurobiology and Behaviour: NeuroscienceNeurobiology
Adaptations for Nutrition
- 6 subtopics
- 18 things to know
- Component 3
What Adaptations for Nutrition covers
Adaptations for Nutrition is examined in Component 3, Requirements for Life. It covers modes of nutrition, saprotrophic nutrition, holozoic nutrition and the unicellular gut, from a sac-like gut to a tube gut, the human gut and the effect of diet and herbivores, carnivores and parasites.
Where it is assessed
Component 3
Requirements for Life, the compulsory section of the paper.
Check the Eduqas specification ↗The 6 subtopics
Each one has its own page.
- Modes of nutritionAutotrophic nutrition, heterotrophic nutrition and chemoautotroph and the chemical it oxidises.Open →
- Saprotrophic nutritionSequence of saprotrophic nutrition, saprotrophic organism and three kinds of enzyme a saprotroph secretes.Open →
- Holozoic nutrition and the unicellular gutFive stages of holozoic nutrition, term for digestion inside the cell and extracellular digestion.Open →
- From a sac-like gut to a tube gutDigestion does Hydra use, tube gut and regional specialisation of a gut.Open →
- The human gut and the effect of dietFour kinds of human tooth and the job of each and four features adapting the ileum for absorption.Open →
- Herbivores, carnivores and parasitesFour chambers of a ruminant stomach, dentition of a herbivore and dentition of a carnivore.Open →
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What is heterotrophic nutrition, what two kinds of autotroph are there, and where is the food digested in each?
Key term
Name four adaptations of a tapeworm to its way of life.
Process
Describe the sequence of saprotrophic nutrition.
Process
Name the five stages of holozoic nutrition.
Key term
Name the four kinds of human tooth and the job of each.
Key term
What is autotrophic nutrition?
Key term
Give an example of a saprotrophic organism.
Key term
What is ingestion?
Key term
What kind of gut does Hydra have?
Key term
Name the four layers of the gut wall from the outside in.
Key term
Name the four chambers of a ruminant stomach.
Key term
What is heterotrophic nutrition?
Key term
What are hyphae?
Key term
Distinguish absorption from assimilation.
Key term
How does Hydra feed?
Key term
What would a microscope slide of the duodenum show?
Key term
Which of the four chambers of a ruminant stomach is the true stomach?
Take Adaptations for Nutrition further
The same content, four other ways.
Questions from this topic
Each one with the model answer underneath.
- 1
What is autotrophic nutrition?
Model answer
Nutrition in which an organism makes its own organic compounds from inorganic ones.
- 2
What is heterotrophic nutrition?
Model answer
Nutrition in which an organism obtains its organic compounds by consuming those made by other organisms.
- 3
What is a photoautotroph?
Model answer
An autotroph that uses light as its energy source, as green plants and algae do.
- 4
What is a chemoautotroph?
Model answer
An autotroph that obtains its energy by oxidising inorganic chemicals rather than from light.
- 5
Give an example of a chemoautotroph and the chemical it oxidises.
Model answer
Nitrifying bacteria in the soil, which obtain energy by oxidising ammonium compounds to nitrite and nitrate.
- 6
In which ecosystem are chemoautotrophs the only producers?
Model answer
A deep-sea hydrothermal vent community, where no light penetrates and the whole food web rests on bacteria oxidising the chemicals in the vent water.
What is inside Levo
Six ways to work the same material.
Adaptations for Nutrition revision questions
- What does Adaptations for Nutrition cover in Eduqas A-Level Biology?
- 6 subtopics: modes of nutrition, saprotrophic nutrition, holozoic nutrition and the unicellular gut, from a sac-like gut to a tube gut, the human gut and the effect of diet and herbivores, carnivores and parasites. Each one has its own page with questions and model answers.
- How is Adaptations for Nutrition organised?
- By the Eduqas A400QS specification, subtopic by subtopic, so it matches the order you are taught it in.
Every question in Adaptations for Nutrition, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
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