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National 5 Biology > Unit 3-Photosynthesis > Flashcards

Unit 3-Photosynthesis Flashcards

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1
Q

Number of stages in photosynthesis

A

2

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2
Q

First stage of photosynthesis in which water is split

A

Light reactions

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3
Q

Molecule which traps light energy from the sun

A

Chlorophyll

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4
Q

Leaf structure which contains chlorophyll and is the site of photosynthesis

A

Chloroplast

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5
Q

Energy rich molecule synthesised during the light reaction

A

ATP (adenosine triphosphate)

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6
Q

Type of energy in ATP

A

Chemical energy

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7
Q

Required to synthesis ATP

A

ADP + Pi + energy

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8
Q

Produced when water is split

A

Hydrogen and oxygen (and energy)

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9
Q

A by-product of water splitting that diffuses out of the leaf

A

Oxygen

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10
Q

Carries hydrogen from the first to the second stage

A

Hydrogen Acceptor

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11
Q

Second stage of photosynthesis where glucose is synthesised

A

Carbon fixation

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12
Q

Controls the series of photosynthesis reactions

A

Enzymes

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13
Q

Produced by water splitting and combines with carbon dioxide to produce glucose

A

Hydrogen

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14
Q

Substance required to produce glucose

A

Hydrogen, carbon dioxide and ATP

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15
Q

Product of photosynthesis that can be used in respiration or converted to other molecules

A

Glucose

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16
Q

Structural carbohydrate used to make cell walls

A

Cellulose

17
Q

Storage carbohydrate in plants

A

Starch

18
Q

Word equation for photosynthesis

A

Water + Carbon dioxide —–> Glucose + Oxygen

19
Q

Term for an essential input in short supply that reduces the rate of photosynthesis

A

Limiting factor

20
Q

Limiting factor on a cloudy day in summer

A

Light intensity

21
Q

Limiting factor on a sunny day in winter

A

Temperature

22
Q

Three factors that may limit the rate of photosynthesis

A

Light intensity & temperature & carbon dioxide concentration

National 5 Biology (19 decks)

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