The table contains names and descriptions of processes involved in the human digestive system.
Complete the table by filling in the missing names (1, 3, and 4) and descriptions (2 and 5).
| Name of process | Description of process |
|---|---|
| (1) ............................................... | food is taken into the body through the mouth |
| Digestion | (2) ........................................................................... |
| (3) ............................................... | small, soluble food molecules and ions move through the wall of the small intestine into the blood |
| (4) ............................................... | digested food molecules move into body cells where they are used to become part of the cells |
| Egestion | (5) ........................................................................... |
Describe the process of digestion in the mouth.
A student carried out food tests on two different food samples, A and B. The results are shown in the table below.
| Sample | Reagent/Test used | Observation |
|---|---|---|
| A | Ethanol emulsion test | cloudy white emulsion |
| B | Benedict's reagent (heated) | brick-red precipitate |
The student concluded that both food samples contained lipids.
Do you agree with this conclusion? Give reasons for your answer.
65 exam-style questions on Edexcel IGCSE Biology Nutrition. Each one has a worked solution and a mark scheme showing where the marks go.