A red blood cell travels from the vena cava to the aorta in a healthy person. Which sequence gives the heart chambers it passes through, in order?
right atrium →\rightarrow→ left atrium →\rightarrow→ right ventricle →\rightarrow→ left ventricle
left atrium →\rightarrow→ left ventricle →\rightarrow→ right atrium →\rightarrow→ right ventricle
right atrium →\rightarrow→ right ventricle →\rightarrow→ left atrium →\rightarrow→ left ventricle
left atrium →\rightarrow→ right atrium →\rightarrow→ left ventricle →\rightarrow→ right ventricle
42 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.