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2.2 Animal tissues, organs and organ systems

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Question 24

A thin tube containing three pressure sensors is placed in a person's oesophagus. Sensor A is nearest the mouth and sensor C is nearest the stomach.

The person swallows a small, soft ball of food. The table shows when each sensor records the greatest pressure.

SensorTime after swallowing in seconds
A1.2
B2.5
C3.9

Using the data, explain how the ball of food is moved towards the stomach. Predict the effect on the movement of the food if the muscles at sensor B did not contract.

[4]
Markscheme

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

304 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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