Biology 5090 · O Level · Circulatory system

Circulatory system — practice question

Table 2.1 displays the amount of blood delivered to different body parts at rest and while doing strenuous exercise.
(a(i))[2]

Calculate the volume of blood that is sent to the brain at rest as a percentage of the total sent to the whole body. Show your working in the space below.

(a(ii))[1]

Name the blood vessels that carry blood to each kidney.

(a(iii))[1]

Using the information in Table 2.1, calculate the volume of blood sent to the kidneys during strenuous exercise. Write your answer in the space provided in Table 2.1.

(b)[4]

Use the information in Table 2.1 to name two parts of the body that receive an increased supply of blood during strenuous exercise. Explain the advantage to the body of increasing the supply of blood to each of the parts you name.

(c)[2]

Using the information in Table 2.1, suggest why eating immediately before exercise is not recommended.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: The calculation is (750/5800) \times 100.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI