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Biology: A Level > Chapter 13: Photosynthesis > Flashcards

Chapter 13: Photosynthesis Flashcards

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1
Q

chlorophyll

A

a green pigment that absorbs energy from light, used in photosynthesis

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2
Q

a green pigment that absorbs energy from light, used in photosynthesis

A

chlorophyll

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3
Q

light-dependent stage

A

the first series of reactions that take place in photosynthesis; it requires energy absorbed from light

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4
Q

the first series of reactions that take place in photosynthesis; it requires energy absorbed from light

A

light-dependent stage

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5
Q

light-independent stage

A

the final series of reactions that take place in photosynthesis; it does not require light but does need substances that are produced in the light-dependent stage.

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6
Q

the final series of reactions that take place in photosynthesis; it does not require light but does need substances that are produced in the light-dependent stage.

A

light-independent stage

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7
Q

photolysis

A

splitting a water molecule, using energy from light

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8
Q

splitting a water molecule, using energy from light

A

photolysis

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9
Q

photophosphorylation

A

producing ATP using energy that originated as light

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10
Q

producing ATP using energy that originated as light

A

photophosphorylation

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11
Q

NADP

A

a coenzyme that transfers hydrogen from one substance to another, in the reactions of photosynthesis

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12
Q

a coenzyme that transfers hydrogen from one substance to another, in the reactions of photosynthesis

A

NADP

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13
Q

Calvin cycle

A

a cycle of reactions in the light-independent stage of photosynthesis in which carbon dioxide is reduced to form carbohydrate

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14
Q

a cycle of reactions in the light-independent stage of photosynthesis in which carbon dioxide is reduced to form carbohydrate

A

Calvin cycle

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15
Q

stroma

A

the background material in a chloroplast in which the light-independent stage of photosynthesis takes place

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16
Q

the background material in a chloroplast in which the light-independent stage of photosynthesis takes place

A

stroma

17
Q

lamellae

A

membranes found within a chloroplast

18
Q

membranes found within a chloroplast

A

lamellae

19
Q

thylakoid membranes

A

the membranes inside a chloroplast that enclose fluid-filled sacs; the light-dependent stage of photosynthesis takes place in these membranes

20
Q

the membranes inside a chloroplast that enclose fluid-filled sacs; the light-dependent stage of photosynthesis takes place in these membranes

A

thylakoid membranes

21
Q

thylakoid spaces

A

fluid-filled sacs enclosed by the thylakoid membranes

22
Q

fluid-filled sacs enclosed by the thylakoid membranes

A

thylakoid spaces

23
Q

photosynthetic pigments

A

coloured substances that absorb light of particular wavelengths, supplying energy to drive the reactions in the light-dependent stage of photosynthesis

24
Q

coloured substances that absorb light of particular wavelengths, supplying energy to drive the reactions in the light-dependent stage of photosynthesis

A

photosynthetic pigments

25
Q

absorption spectrum

A

a graph showing the absorbance of different wavelengths of light by a photosythetic pigment

26
Q

a graph showing the absorbance of different wavelengths of light by a photosythetic pigment

A

absorption spectrum

27
Q

photosystem

A

a cluster of light-harvesting pigments surrounding a reaction centre

28
Q

a cluster of light-harvesting pigments surrounding a reaction centre

A

photosystem

29
Q

reaction centre

A

the part of a photosystem towards which energy from light is funnelled; it contains a pair of chlorophyll a molecules, which absorb the energy and emit electrons

30
Q

the part of a photosystem towards which energy from light is funnelled; it contains a pair of chlorophyll a molecules, which absorb the energy and emit electrons

A

reaction centre

31
Q

chromatography

A

a technique that can seperate substances in a mixture according to their solubility in a solvent

32
Q

a technique that can seperate substances in a mixture according to their solubility in a solvent

A

chromatography

33
Q

Rf value

A

a number that indicates how far a substance travels during chromatography, calculated by dividing the distance travelled by the substance by the distance travelled by the solvent

34
Q

a number that indicates how far a substance travels during chromatography, calculated by dividing the distance travelled by the substance by the distance travelled by the solvent

A

Rf value

35
Q

action spectrum

A

a graph showing the effect of different wavelengths of light on a process, for example the rate of photosynthesis

36
Q

a graph showing the effect of different wavelengths of light on a process, for example the rate of photosynthesis

A

action spectrum

Biology: A Level (9 decks)

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