(a)[2]
What does the term physical digestion mean?
(b)[3]
State the letter from Fig. 1.1 for each place where: physical digestion occurs; glucagon is produced; bile is produced.
(c)[3]
Explain the function of bile in physical digestion.
(d)[2]
State the names of two kinds of human teeth and what they do.
(e)[4]
Identify and explain the roles of the parts labelled X and Y in Fig. 1.2.