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Scientific processes

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Question 280

A marine biology student conducted a laboratory experiment to investigate the effect of water salinity on the activity level of brine shrimp (Artemia salina).

Two groups of 30 brine shrimp each were observed under different conditions:

  • Group A (Normal Salinity): Placed in water with a salinity of 35 g/L.
  • Group B (High Salinity): Placed in water with a salinity of 50 g/L.

The student measured the activity level of each brine shrimp by counting the number of swimming strokes completed in a 30-second interval.

Write a non-directional hypothesis for this experiment.

[2]
Markscheme

Scientific processes Questions

  1. A Level
  2. /Psychology
  3. /Scientific processes

689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.

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