Photosynthesis, the Chloroplast, and Pigments (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which evidence supports chloroplasts evolved from prokaryotes via endosymbiosis?
Which evidence supports chloroplasts evolved from prokaryotes via endosymbiosis?
Chloroplasts have circular DNA & 70S ribosomes
What is the key difference between the outer and inner chloroplast envelope membranes?
What is the key difference between the outer and inner chloroplast envelope membranes?
Inner is selectively permeable; outer is not
Where does the light-dependent stage of photosynthesis occur?
Where does the light-dependent stage of photosynthesis occur?
On thylakoid membranes within the grana
What does the stroma of a chloroplast contain?
What does the stroma of a chloroplast contain?
Enzymes, starch grains, circular DNA, 70S ribs
What are the maximum absorption wavelengths for PSI and PSII?
What are the maximum absorption wavelengths for PSI and PSII?
PSI at 700 nm (P700); PSII at 680 nm (P680)
What is at the centre of chlorophyll's porphyrin group?
What is at the centre of chlorophyll's porphyrin group?
Magnesium atom
What is the main function of accessory pigments like chlorophyll b and carotenoids?
What is the main function of accessory pigments like chlorophyll b and carotenoids?
Capture light & transfer energy to chloro a
What does the close match between absorption spectra and action spectrum demonstrate?
What does the close match between absorption spectra and action spectrum demonstrate?
Absorbed light by pigments drives photosynth
In chromatography, which pigment travels furthest up the plate?
In chromatography, which pigment travels furthest up the plate?
β-Carotene (orange-yellow pigment)
How is the Rf value calculated in chromatography?
How is the Rf value calculated in chromatography?
Distance moved by pigment ÷ distance by solv