Syllabus Edition
First teaching 2023
First exams 2025
1 markWhich of the following is true of ribosomes?
Proteins for transport are synthesised by free ribosomes.
Ribosomes consist of a large and a small subunit composed of protein and transfer RNA (tRNA).
Ribosomes exist in the cells of all living organisms.
Ribosomes on the rough endoplasmic reticulum synthesise proteins for retention within the cell.
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1 markThe chloroplast is adapted for photosynthesis.
Which of the following is not an adaptation of the chloroplast for photosynthesis?
A large surface area of thylakoid membranes with photosystems.
A large volume of fluid inside thylakoids.
Compartmentalisation of enzymes and substrates of the Calvin cycle in the stroma.
Chloroplast DNA that contains genes which code for some of the proteins and enzymes used in photosynthesis.
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