GCE Biology 2020
Past Questions

A student observed a plant cell under the microscope and noticed a large central vacuole, a cell wall, and chloroplasts. Which of the following structures would NOT be found in an animal cell performi…

Which of the following pairs correctly matches a cell organelle with its function?

Two organisms, P and Q, share the same family but belong to different genera. Which of the following statements about P and Q is MOST accurate?

In a study of five organisms — Amoeba, Spirogyra, Rhizopus, Paramecium, and Volvox — a student groups them based on the presence of chlorophyll. Which of the following correctly identifies organisms w…

Which of the following nutrients is responsible for the synthesis of haemoglobin in the human body?

In which part of the human alimentary canal does the enzymatic digestion of proteins begin?

The opening and closing of stomata is directly controlled by the

Which of the following sequences correctly represents the stages of aerobic respiration?

Which of the following correctly pairs an excretory organ with its primary excretory product in humans?

A man produces 180 litres of glomerular filtrate per day but excretes only 1.8 litres of urine. What percentage of the filtrate is reabsorbed by the kidney tubules?

During the menstrual cycle of a woman with a regular 28-day cycle, ovulation typically occurs on day

A botanist recorded the following fresh masses of a plant shoot over five weeks: Week 0 = 4 g, Week 1 = 8 g, Week 2 = 16 g, Week 3 = 32 g, Week 4 = 64 g. Which mathematical expression correctly repres…

In a population of 200 guinea pigs, 32 are white-furred. If white fur is controlled by a recessive allele and the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant all…

Lamarck's theory of evolution was largely rejected because

In a grassland ecosystem in Nigeria, grass is eaten by grasshoppers, which are eaten by lizards, which are eaten by hawks. If the grass contains 10,000 kJ of energy, how much energy is available to th…

Which of the following abiotic factors is MOST responsible for determining the distribution of vegetation zones across Nigeria, from the mangrove swamps in the south to the Sahel savanna in the north?

Which of the following correctly describes the function of the myelin sheath in a neurone?

a) The diagram below describes the stages of aerobic respiration. Study it and answer the questions that follow. Stage I: Glucose → Pyruvate (Cytoplasm) Stage II: Pyruvate → Acetyl CoA (Mitochondrial…