IGCSE-Biology

What are the products when oil is digested?

• amino acids and glycerol

• fats and amino acids

• fatty acids and glycerol

Why is calcium needed in the diet?

• to make carbohydrates

• to make teeth

• to make enzymes

• to make protein

The diagram shows a section through the human heart. Which two blood vessels are arteries?

• 1 and 2

• 2 and 3

• 3 and 4

• 4 and 1

The diagram shows a plant cell.

In which regions of the cell are the chloroplasts and nucleus found?

• X-chloroplasts, X-nucleus

• X-chloroplasts, Y-nucleus

• Y-chloroplasts, X-nucleus

• Y-chloroplasts, Y-nucleus

Which result with the biuret test would show protein is present?

• blue

• green

• orange

• purple

Which food is high in iron?

• citrus fruit

• milk

• oily fish

• red meat

The ribs are lowered as we breathe out. Which characteristic of living organisms does this illustrate?

• growth

• movement

• respiration

• sensitivity

Which tissue carries water up the stem of a plant?

• epidermis

• phloem

• spongy mesophyll

• xylem

Which structural feature is found in a plant cell but not in an animal cell?

• cell membrane

• cell wall

• cytoplasm

• nucleus

Which characteristic of living organisms involves chemical reactions that break down nutrient molecules to release energy?

• excretion

• nutrition

• reproduction

• respiration