Describe the functions of red blood cells.

Important Questions on Respiration and Circulation

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 11

Describe the functions of white blood cells.

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 11

Describe the functions of platelets. 

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 12

Which parts of your respiratory system move to make your chest volume increase?

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 12

Explain why air flows into your lungs when your chest volume increases?

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 13

A student breathes in and out 7 times in 30 seconds. Calculate the breathing rate. 

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 17

Draw a labelled diagram to explain how specialised cells in the tubes of your lungs to keep them clean.

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 17

Explain what happens if the specialised cells in the tubes of our respiratory system stop working. 

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Student's book>Chapter 2 - Respiration and Circulation>End of chapter review>Q 18

Carbon monoxide is a poisonous gas. It sticks to haemoglobin. This stops other substances from sticking to haemoglobin. One of the early symptoms of carbon monoxide poisoning is an increase in breathing rate. Explain this symptom.