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FOUN004 Biology > Photosynthesis (Biology 010) > Flashcards

Photosynthesis (Biology 010) Flashcards

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1
Q

What is the purpose of photosynthesis

A

To produce food in the form of glucose using light

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2
Q

What are the reactants of photosynthesis

A

Carbon dioxide and water

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3
Q

What are the products of photosynthesis

A

Glucose, water and oxygen

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4
Q

What are the two processes of photosynthesis

A

Light independent and light dependent processes

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5
Q

What is the pigment used to absorb light for photosynthesis

A

Chlorophyll

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6
Q

What is the organelle that consists of chlorophyll

A

Chloroplast

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7
Q

What is the structure of a chloroplast

A

Outer/Inner membrane, thylakoid, thylakoid space, granum and stroma

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8
Q

What is a thylakoid

A

A small sub-unit of a granum

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9
Q

What is a granum

A

A stack of thylakoids

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10
Q

The stroma is similar to what?

A

The cytoplasm

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11
Q

What kind of light does chlorophyll absorb and what is reflected

A

Absorbs red and violet light, in which green light is reflected

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12
Q

What is the light dependent phase (*)

A

Absorbed light is used to split water into hydrogen and carbon and electrons in which carries the hydrogen to the light independent stage

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13
Q

What is the process called of light splitting water

A

Photolysis

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14
Q

In-depth explanation of the light dependent phase

A

Hydrogen creates a proton gradient in which ATP synthase creates ATP (energy). Those two electron are passed through the electron transfer chain generating more ATP (energy). This will also produce NADPH as the electrons and hydrogen are transferred to the NADPH.

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15
Q

Where in the chloroplast is NADPH and ATP produced

A

In the grana

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16
Q

What is the light independent phase

A

Forming glucose using hydrogen, NADPH and carbon dioxide

17
Q

What are the three stages of the light independent phase

A

Carbon fixation, reduction and regeneration

18
Q

What happens in carbon fixation

A

When carbon dioxide is fixed into an organic molecule

19
Q

What happens in reduction

A

NADPH and ATP (energy) is used to reduce the fixed carbon into glucose

20
Q

What happens in regeneration

A

The carbon dioxide acceptor (RuBP) regenerates itself in which cycles back to the first stage

21
Q

How many Calvin cycles is needed to produce glucose

A

Two

22
Q

What does glucose have to turn into and why

A

Because glucose is soluble, glucose needs to turn into a insoluble starch because glucose can upset the osmotic balance as well as for storage energy

FOUN004 Biology (16 decks)

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