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Biology A2 > 5 Photosynthesis > Flashcards

5 Photosynthesis Flashcards

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1
Q

photosynthesis converts _____ energy into ______ energy

A

light into chemical

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2
Q

what is the main photosynthetic pigment?

A

chlorophyll

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3
Q

what inorganic ion produces chlorophyll?

A

magnesium

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4
Q

what is photolysis?

A

breakdown of water into H+,O and e- to replace excited e- in photosystem II

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5
Q

what is chemiosmosis?

A

movement of H+ from high to concentration, it is used to produce ATP

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6
Q

what is phosphorylation?

A

the addition of phosphate to a molecule

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7
Q

in which organelle does photosynthesis take place in?

A

chloroplast

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8
Q

what deficiency results in a lack of chlorophyl?

A

magnesium

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9
Q

what is the equation for photosynthesis?

A

6CO2 + 6H2O → C6H12O6 + 6O2

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10
Q

what are the 8 components fo a chloroplast?

A
  1. outer membrane
  2. inner membrane
  3. stroma
  4. thylakoids
  5. lumen
  6. granum
  7. lamela
  8. starch granule
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11
Q

where does the light-dependent reaction take place?

A

thylakoid membrane inside a chloroplast

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12
Q

where does the light-independent reaction take place?

A

stroma

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13
Q

what enzyme is used to convert ADP into ATP?

A

ATPsynthase

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14
Q

light energy and water go into the light-dependent reaction to make NADPH, compound x and gas y which are?

A

x= ATP

y= O2

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15
Q

T or F: light is needed for all aspects of photosynthesis

A

False

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16
Q

T or F: the electron acceptor in plants id NAD+

A

False

17
Q

T or F: light energy raises the electrons in chlorophyll from their ground state to an excited state

A

True

18
Q

T or F: the light-dependent reaction releases ATP

A

True

19
Q

T or F: the oxygen released during photosynthesis comes from CO2

A

False

20
Q

T or F: in photosystem II the electrons released by chlorophyll are replaced by electrons from water

A

True

21
Q

T or F: the two photosystems are located in the thylakoid membrane

A

True

22
Q

T or F: the thylakoid lumen becomes alkali during chemiosmosis

A

False

23
Q

the light-independent reaction uses the products ____ and____ from LDR

A

ATP and NADPH

24
Q

LIR is also known as the ______

A

Calvin cycle

25
Q

what does the Calvin cycle form?

A

glucose

26
Q

what are the three stages of the Calvin cycle?

A
  • fixation
  • reduction
  • regeneration
27
Q

what happens during fixation?

A

CO2 is attached to RuBP

28
Q

what enzyme attached RuBP to CO2?

A

RUBISCO

29
Q

what happens in the stage of reduction?

A

phosphorylation and the reduction of the fixed molecules

30
Q

what happens during regeneration?

A

phosphorylation that results in the formation of the CO2 acceptor (RuBP I think)

31
Q

how many GALP form one glucose?

A

2

Biology A2 (15 decks)

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