Photosynthesis
This lesson covers:
- What 'photosynthesis' is
- The word and symbol equations for photosynthesis
- What a plant needs glucose for
Which of the following absorbs the energy required for photosynthesis?
Chlorophyll
Glucose
Starch
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In what part of the cell does photosynthesis take place?
In the cytoplasm
In the cell wall
In chloroplasts
In ribosomes
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What is the word equation for photosynthesis?
Carbon dioxide + ➔ glucose +
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What is CO2?
Carbon Dioxide
Water
Glucose
Oxygen
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What is H2O?
Carbon Dioxide
Glucose
Water
Oxygen
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What is the chemical symbol equation for photosynthesis?
O2 + H2O ➔ C6H12O6 + CO2
6CO2 + 6H2O ➔ C6H12O6 + 6O2
6O2 + 6H2O ➔ C6H12O6 + 6CO2
CO2 + H2O ➔ C6H12O6 + O2
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Which type of reaction is photosynthesis?
Ectothermic
Thermal
Endothermic
Exothermic
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What can the glucose made during photosynthesis be used for?
Photosynthesis
Stored as starch for later
Respiration
Osmosis
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What is the molecular formula for glucose?
C16H2O6
C6H2O
C8H13O3
C6H12O6
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How do plants get the carbon dioxide required for photosynthesis?
It diffuses from the air into the leaves via stomata
They absorb it by active transport
It diffuses from the soil into the root hair cells by osmosis
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How do plants get the water required for photosynthesis?
It diffuses from the air into the leaves via stomata
It diffuses from the soil into the root hair cells by osmosis
They absorb it by active transport
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What makes starch a useful long term storage molecule?
(Select all that apply)
It requires energy to make
It is insoluble in water
It can easily be broken down when needed
It is compact
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One use of glucose is to make amino acids.
What else do plants need to make amino acids?
Nitrate ions
Potassium ions
Phosphate ions
Magnesium ions
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What are the main uses of glucose in plants?
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Which useful energy transfer or conversion happens overall in photosynthesis?
Chemical ➔ light
Light ➔ heat
Light ➔ chemical
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