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Combined Science: Biology

GCSE · Edexcel · higher

QuestionsFlashcards

Disease
Defence Against Disease
Development of Medicines
- Antibiotics
  4
- Discovery & Development of New Drugs
  6
Non-Communicable Diseases
- Lifestyle & Non-Communicable Disease
  8
- Cardiovascular Disease
  6

The Organism in the Environment
Human Influences on the Environment
- Human Impact on Biodiversity
  6
- Benefits of Maintaining Biodiversity
  6
Cycles within Ecosystems

Parasitism & Mutualism Flashcards

All 6 cards in this deck

What is parasitism?: A relationship where the parasite gains and the host is harmed.
What is mutualism?: A relationship between two species in which both organisms benefit.
Describe the feeding relationship between mistletoe and the tree it grows on.: The tree is the host; the mistletoe gains nutrients/water from the tree and the tree is damaged by it.
Bacteria in the root nodules of a leguminous plant give it nitrogen compounds, and the plant gives the bacteria sugars. What is this relationship called?: Mutualism.
True or false? Fleas living on a dog is an example of mutualism.: False. It is parasitism — the flea gains food (blood) and the dog is harmed.
How are bees and flowering plants an example of mutualism?: The bees get food (nectar) from the flowers, and as they move between flowers they carry pollen, pollinating the plants so they can reproduce.