OCR Human Biology F225

A Level quiz about topics within the course of F225

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1. What is the definition of a locus?

  • genetic constitutions of an organism
  • specific position on chromosome occupied by specific gene
  • specific length of single strand of DNA coding for single charactersitic
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2. What is a weakness of using xenotransplantation?

  • on demand
  • immunological repsonse and risk of catching disease communicable from animals to humans
  • can't harm the dead when removing organs

3. Bipolar neurone transmits impulses from photoreceptor cells to ganglion cells..

  • True
  • False

4. What is the role of the medulla oblongata?

  • control balance and posture
  • initiate muscle movements and determine intelligence and personality
  • to control autonomic functions and relay nerve signals
  • coordinates mucles to allow precise movements

5. A cholinergic synapse is a synapse in which the neurotransmitter acetylcholine is used

  • True
  • False
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