GCE Biology 2019
Past Questions

A student examines an organism under the microscope and notes that it has a nucleus, chloroplasts, and moves using flagella. This organism is BEST classified as a

A 70 kg adult male requires approximately 0.8 g of protein per kilogram of body weight per day. How many grams of protein does this individual require daily?

Which of the following correctly describes the process of anaerobic respiration in yeast?

Which of the following correctly describes the role of the corpus luteum after ovulation?

A cell at the start of meiosis contains 46 chromosomes. After meiosis I is completed, each resulting cell will contain how many chromosomes, and what will be the chromosome number in each cell at the …

Which hormone is primarily responsible for apical dominance in plants, where the presence of the terminal bud suppresses the growth of lateral buds?

In an experiment, the dry mass of germinating seeds was measured daily. On day 1 the dry mass was 5.0 g, and by day 4 it had fallen to 2.0 g. Which of the following best explains this observation?

Metamorphosis in insects such as the housefly (Musca domestica) is described as holometabolous because it involves

In Drosophila, grey body (G) is dominant over black body (g) and long wing (L) is dominant over vestigial wing (l). A dihybrid cross between two flies heterozygous for both traits is performed. If the…

The existence of similar bone arrangements in the forelimbs of humans, bats, whales and horses is used as evidence for evolution. This type of evidence is referred to as

In a population of 500 beetles, 320 are green and 180 are brown. If green colour is determined by allele G and brown by allele g, and the population is in Hardy-Weinberg equilibrium, what is the appro…

During an ecological study, a population of tilapia fish in a pond was estimated using the mark-recapture method. In the first sample, 60 fish were caught, marked, and released. In the second sample, …

a) Define the term respiration as used in biology. (2 marks) b) State four differences between aerobic respiration and anaerobic respiration. (8 marks) c) Write a balanced chemical equation for aerobi…

a) Define the term 'growth' as used in biology. (2 marks) b) State FOUR characteristics of growth in living organisms. (4 marks) c) Describe the sigmoid (S-shaped) growth curve, explaining what occurs…

a) Explain the term 'metamorphosis' in insects. (2 marks) b) With the aid of a labelled diagram, describe the life cycle of a named insect that undergoes complete metamorphosis (holometabolous develop…