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Combined Science: Biology

GCSE · Edexcel · foundation

QuestionsFlashcards

Disease
Defence Against Disease
Development of Medicines
- Antibiotics
  4
- Discovery & Development of New Drugs
  3
Non-Communicable Diseases
- Lifestyle & Non-Communicable Disease
  7
- Cardiovascular Disease
  6

The Organism in the Environment
Human Influences on the Environment
- Human Impact on Biodiversity
  6
- Benefits of Maintaining Biodiversity
  4
Cycles within Ecosystems

Prokaryotic Organisms Flashcards

All 5 cards in this deck

What is a plasmid?: A small ring of DNA in a bacterial cell, separate from the chromosomal DNA.
What is the function of a bacterial flagellum?: Movement – it allows the bacterium to swim.
True or false? A bacterial cell keeps its chromosomal DNA inside a nucleus.: False. Bacteria have no nucleus – the chromosomal DNA is a single loop free in the cytoplasm.
Give three structures found in both a bacterial cell and a plant cell.: Cell wall, cell membrane and ribosomes (also cytoplasm and DNA).
Which cells are prokaryotic and which are eukaryotic?: Bacteria are prokaryotic; animal and plant cells are eukaryotic. Prokaryotic cells are also much smaller.