GCE Biology 2024
Past Questions

A cell has a surface area of $600 \mu m^2$ and a volume of $1000 \mu m^3$. If the cell grows such that its volume doubles while its shape remains the same, what is the new surface area-to-volume ratio…

Which of the following organelles is responsible for the synthesis of proteins in a cell?

Which of the following correctly represents the hierarchy of biological classification from the largest to the smallest group?

Which of the following pairs of organisms are BOTH members of the phylum Arthropoda?

Which of the following correctly describes the role of bile in fat digestion?

A food sample was tested with Fehling's solution and produced a brick-red precipitate. Which of the following substances is most likely present in the sample?

A student measured the diameter of a cross-section of a plant stem and found that the xylem vessels occupied a total cross-sectional area of $12 \ mm^2$ out of a total stem area of $80 \ mm^2$. What p…

Which of the following correctly describes the role of companion cells in phloem transport?

A respiratory quotient (RQ) of 0.7 indicates that the substrate being respired is

The net gain of ATP molecules from the complete aerobic respiration of one molecule of glucose is

In the mammalian kidney, which structure is responsible for the selective reabsorption of glucose from the glomerular filtrate?

The process by which a single organism produces offspring genetically identical to itself is known as

Which of the following correctly describes the sigmoid growth curve of a population?

A seedling measured 2 cm at the end of week 1 and 8 cm at the end of week 3. What is the mean growth rate of the seedling over this period?

Which of the following is an example of discontinuous variation in humans?

Which of the following best describes a food chain?

The process by which a bare rock surface in a tropical region is gradually colonized by organisms, eventually leading to the development of a stable forest community, is called

A patient is unable to maintain balance and coordinate voluntary muscle movements after sustaining a head injury. Which part of the brain is most likely damaged?

a) Define the term 'nutrition' as used in biology. (2 marks) b) State FOUR differences between autotrophic nutrition and heterotrophic nutrition. (8 marks) c) List THREE examples of organisms that exh…

(a) State four components of blood and give one function of each. (8 marks) (b) Describe how oxygen is transported from the lungs to the body tissues in mammals. (5 marks) (c) State two differences be…

a) Define the term excretion. (2 marks) b) State TWO differences between excretion and egestion. (4 marks) c) Name the excretory organs in mammals and state ONE excretory product of each organ. (6 mar…

a) Define the term 'evolution' as used in biology. (2 marks) b) State FOUR pieces of evidence that support the theory of organic evolution. (4 marks) c) Explain how each of the following concepts cont…