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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

Growth Flashcards

All 8 cards in this deck

Which two processes bring about growth in animals?: Cell division (by mitosis) and differentiation.
Which three processes bring about growth in plants?: Cell division (by mitosis), cell elongation and differentiation.
Give three ways, other than measuring change in length, of showing the growth of seedlings.: Measure the change in mass; look at the number/size of leaves; measure the width of the seedling.
What does it mean if a child's height is on the 25th percentile for their age?: 25% of children of that age are shorter than them (75% are taller).
True or false? A child whose mass is on the 9th percentile must be growing abnormally.: False. A child can be healthy on any percentile, as long as their growth stays on or around the same percentile as they get older.
Which measurements of a child does a doctor plot on percentile charts to monitor growth?: Height, mass (weight) and head circumference, compared with other children of the same age.
What is growth?: An increase in size or mass.
What is cell elongation in plants?: A plant cell expanding to become larger. It is the main way a plant grows in height.