IGCSE Biology (0970) — May–June 2023, Paper 32

Fig. 1.1 shows a photograph of a pseudoscorpion, with the part labelled A. State two features, visible in Fig. 1.1, that can be used to classify this organism as an arachnid.

Fig. 2.1 is a diagram showing some of the structures found in a plant cell, with structures labelled L, M, N, Q, R, S, T. Table 2.1 shows the names of some plant cell structures,…

Fig. 3.1 shows the action of an enzyme. On Fig. 3.1 use label lines and labels to identify: • an enzyme • a product • a substrate.

A balanced diet includes foods that contain calcium ions. Circle the food that has the highest calcium content. cheese egg orange potato

Complete the sentences about anaerobic respiration in humans, using words or phrases from the list (alcohol, breaks down, builds up, carbon dioxide, element, lactic acid, less,…

The eye is a sense organ that contains receptor cells that respond to light. State three other stimuli that sense organs respond to.

A farmer wanted to use selective breeding to produce goats with a high milk yield. Fig. 7.1 shows a goat being milked. Describe the stages in selective breeding to develop goats…

Explain the importance of the acrosome and the mitochondria for the function of sperm cells.