Practise O/L exam questions on The Cell and Cell Structure with worked solutions
2020 · Paper II · 5 marks
The diagram below shows two cells X and Y. Cell X has a cell wall, large central vacuole, chloroplasts and a nucleus. Cell Y has a nucleus, cell membrane and mitochondria only.
(i) Identify cell X and cell Y, giving ONE reason for each.
(ii) State the function of the mitochondrion.
(iii) Name the process that takes place in the chloroplast.
Show worked solution
(i) X is a PLANT cell — because it has a cell wall, chloroplasts and a large central vacuole (features absent in animal cells). Y is an ANIMAL cell — because it lacks a cell wall and chloroplasts.
(ii) Mitochondria are the site of aerobic respiration — they release energy (ATP) from glucose for cell activities.
(iii) Photosynthesis occurs in the chloroplast.