Skip to content

Course home

Sign up

2.2 Animal tissues, organs and organ systems

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123
Question 3

Scientists used a computer model to predict oxygen transfer in a human lung. They changed one factor at a time.

The table shows the predicted volume of oxygen entering the blood each minute.

SettingVentilationBlood flowVolume of oxygen entering the blood in cm3 per minute
Anormalnormal250
Breducednormal170
Cnormalreduced190
a.

Calculate the decrease in the volume of oxygen entering the blood each minute from setting A to setting B.

[1]
b.

Explain why reducing ventilation caused the result shown for setting B.

[2]
c.

Explain why reducing blood flow caused the result shown for setting C.

[2]
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.

Question bank