Science Combined 0653: B8. Gas exchange and respiration Topical Past Paper Questions
Cambridge IGCSE Science Combined (0653) past-paper questions on B8. Gas exchange and respiration, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
(a) Figure 1.1 is a diagram of the human breathing system. Figure 1.1 (i) Identify the parts labelled A and B on Figure 1.1. A ..... B ..... (ii) Draw a label line and the letter L on Figure 1.1 to identify the larynx. (b) Oxygen diffuses into the blood across the gas exchange su…
A student investigates the effect of exercise on heart rate. The student exercises by lifting a metal block up and down 50 times. The student uses five different blocks, A, B, C, D and E, each with a different mass. The student measures heart rate by counting the number of heart…
(a) Egg cells and sperm cells are the gametes in human reproduction. In Table 7.1: • place E in all the boxes that describe features of egg cells • place S in all the boxes that describe features of sperm cells • place N in all the boxes that do not describe features of either eg…
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