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CB - Photosynthesis
Cell Biology - Topic 8 - Photosynthesis
Question | Answer |
---|---|
In which cell structure does photosynthesis occur? | chloroplasts |
What pigment inside the chloroplast traps light energy from the Sun? | chlorophyll |
What are the 2 products of photosynthesis? | oxygen & glucose |
What type of molecule controls each step in the photosynthesis reaction? | enzymes |
What does light energy do to water? | splits it into hydrogen and oxygen |
What does chlorophyll convert light energy into? | chemical energy |
What products from stage 1 of photosynthesis are needed for stage 2? | hydrogen & ATP |
What happens to the oxygen produced during stage 1? | diffuses out of leaves as a by-product |
What is stage 1 of photosynthesis called? | light dependent stage |
What is stage 2 of photosynthesis called? | carbon fixation |
What molecule combines with hydrogen during carbon fixation? | carbon dioxide |
What is the product of the carbon fixation stage? | glucose |
What molecule can glucose be turned into which helps strengthen cell walls? | cellulose |
What molecule can glucose be turned into which acts as a storage carbohydrate? | starch |
Describe what is meant by a limiting factor of photosynthesis. | something that when in short supply limits the rate of photosynthesis |
Limiting factors of photosynthesis include temperature, carbon dioxide concentration and... | light intensity |