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Biology B1-B3 > B1.4.1 - Photosynthesis > Flashcards

B1.4.1 - Photosynthesis Flashcards

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1
Q

What do plants have to take in to create food?

A

Carbon Dioxide
Water
Light

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2
Q

Where does the carbon dioxide diffuse through in photosynthesis?

A

Through the stomata

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3
Q

How do plants obtain water?

How do they obtain light energy?

A

Through the root hair cells from the soil via osmosis

The sun

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4
Q

What are the reactants in photosynthesis?

A

Water
Carbon Dioxide
(Light)

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5
Q

What are the products in photosynthesis?

A

Oxygen and glucose

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6
Q

What is the symbol equation for this?

A

CO2+H2O->C6H12O6+O2

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7
Q

How would you balance this?

A

6CO2+6H2O->C6H12O6+6O2

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8
Q

Where does the wasted oxygen go after some has been used for respiration?

A

It is released into the environment

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9
Q

Where does photosynthesis take place?

A

In the chloroplasts

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10
Q

Why are stems and leaves green?

A

They contain the green pigment chlorophyll in their chloroplasts

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11
Q

Where does glucose store it’s energy during photosynthesis?

A

Within its chemical bonds

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12
Q

How many main stages of photosynthesis reactions are there?

A

2

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13
Q

Explain the light dependant photosynthesis stage

A

Energy transferred from light splits water molecules into oxygen gas and hydrogen ions

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14
Q

Explain the non-light dependant photosynthesis stage

A

Carbon dioxide gas combines with the hydrogen molecules to create glucose

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15
Q

What type of reaction is this?

A

Endothermic

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16
Q

What does photosynthesis being an endothermic reaction mean?

A

It needs to transfer energy from its surroundings to keep it going

17
Q

What do the plants use the glucose produced for?

A 
Respiration
Energy storage (as starch)
Creation of proteins
Creation of cellulose
Growth
18
Q

Why do plants convert unneeded glucose into starch?

A

It provides a store of energy and can be used at night for respiration when the plant is not photosynthesising

19
Q

What can chemical reactions in plants create?

A

Proteins
Cellulose
Fats

Biology B1-B3 (25 decks)

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