(a(i))[2]
Give the name of one substance excreted by the lungs and say where in the body it is produced.
(a(ii))[2]
State the name of one nitrogen-containing excretory substance removed by the kidneys. Explain why it is excreted.
(b(i))[1]
State the name of the structure in the kidney that filters blood.
(b(ii))[2]
State two blood components that are unable to pass through the filter.
(c(i))[3]
Complete the table by giving the letter in Fig. 1.1 that labels each structure.
(c(ii))[1]
State one role of the nucleus.
(c(iii))[1]
State the name of one part of the mammalian body, other than the kidney, that contains cells with microvilli.
(c(iv))[4]
Use Fig. 1.1 to explain how the cells are adapted for absorption.