Edexcel IGCSE Biology 2.25 Dietary Sources and Functions Questions

Practise matching carbohydrates, proteins, lipids, vitamins and minerals to their functions, using food labels and deficiency examples including fibre and water.

Syllabus
First assessment 2019
Course
Biology 4BI1

Exam points

  • Match carbohydrate, protein, lipid, vitamins, minerals, water and fibre to their dietary functions.
  • Explain how nutrient shortages and excess can affect growth and health, including low fibre, vitamin or mineral deficiency, and excess sugar or energy.
  • Use food-composition tables and recommended daily amounts to compare dietary needs and identify missing or excess nutrients.

Edexcel IGCSE Biology 2.25 Dietary Sources and Functions Questions question 1

[Maximum number: 4]

The diagram shows a fetus in the uterus of a woman.

Figure for Question Edexcel IGCSE Biology 2.25 Dietary Sources and Functions Questions question 1 — Edexcel IGCSE Biology

The umbilical cord transports blood from the placenta to the fetus.
This blood contains molecules from the mother that are needed by the developing fetus.

Doctors recommend that pregnant women obtain more of some dietary components than women who are not pregnant.

The table shows the recommended percentage increase of some dietary components in the diet of a woman who is pregnant compared to a woman who is not pregnant.

Table for Question Edexcel IGCSE Biology 2.25 Dietary Sources and Functions Questions question 1 — Edexcel IGCSE Biology

Explain why a woman who is pregnant requires more of each of the dietary components listed in the table.

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