GCE Biology 2021
Past Questions

The cell membrane is described as selectively permeable. This means that it

The scientific name of the domestic dog is Canis lupus familiaris. From this name, it can be deduced that the dog belongs to the genus

During a practical exercise, a student placed a piece of fresh yam in a concentrated salt solution and observed that it became flaccid after 30 minutes. Which of the following best explains this obser…

During vigorous exercise, a student's muscles begin to ache. This is most likely because

In an experiment, a student used a respirometer to measure the oxygen consumed by 5 g of germinating seeds over 30 minutes. The capillary tube showed a fluid movement of 25 mm, and the cross-sectional…

Which of the following animals excretes nitrogenous waste mainly as uric acid?

Which of the following best describes a genotype?

In a monohybrid cross between two heterozygous tall pea plants (Tt × Tt), what is the probability that an offspring will be homozygous recessive?

A woman with normal vision whose father was colour-blind marries a man with normal vision. What is the probability that their son will be colour-blind? (Colour blindness is X-linked recessive)

The peppered moth (Biston betularia) exists in a light-coloured form and a dark-coloured (melanic) form. During the Industrial Revolution in England, the dark form became more common in polluted, soot…

a) Draw and label a diagram of a typical animal cell as seen under the electron microscope. (6 marks) b) State THREE structural differences between a plant cell and an animal cell. (3 marks) c) State …

a) Define the term 'classification' as used in biology. (2 marks) b) State five reasons why living organisms are classified. (5 marks) c) List the hierarchical levels of classification from the highes…

a) Define the term reproduction as used in biology. (2 marks) b) State FOUR differences between sexual and asexual reproduction. (8 marks) c) Describe briefly how vegetative propagation occurs in ONE …