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
Starch
Glucose
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In what part of the cell does photosynthesis take place?
In ribosomes
In the cytoplasm
In chloroplasts
In the cell wall
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What is the word equation for photosynthesis?
Carbon dioxide + ➔ glucose +
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What is CO2?
Carbon Dioxide
Water
Oxygen
Glucose
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What is H2O?
Carbon Dioxide
Glucose
Oxygen
Water
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What is the chemical symbol equation for photosynthesis?
6CO2 + 6H2O ➔ C6H12O6 + 6O2
6O2 + 6H2O ➔ C6H12O6 + 6CO2
O2 + H2O ➔ C6H12O6 + CO2
CO2 + H2O ➔ C6H12O6 + O2
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Which type of reaction is photosynthesis?
Endothermic
Exothermic
Ectothermic
Thermal
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What can the glucose made during photosynthesis be used for?
Osmosis
Respiration
Photosynthesis
Stored as starch for later
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What is the molecular formula for glucose?
C6H2O
C6H12O6
C8H13O3
C16H2O6
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How do plants get the carbon dioxide required for photosynthesis?
They absorb it by active transport
It diffuses from the soil into the root hair cells by osmosis
It diffuses from the air into the leaves via stomata
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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 can easily be broken down when needed
It requires energy to make
It is insoluble in water
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?
Magnesium ions
Phosphate ions
Potassium ions
Nitrate 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?
Light ➔ chemical
Light ➔ heat
Chemical ➔ light
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