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Biology 311C > Lecture 14: Intro to Photosynthesis > Flashcards

Lecture 14: Intro to Photosynthesis Flashcards

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1
Q

Energy

A

-flows through living systems by a series of energy transformations

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2
Q

matter

A

-in the form of molecules, cycles through living systems

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3
Q

energy from sunlight

A

transformed to chemical bond energy in the chloroplast

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4
Q

2 processes of energy from sunlight

A
  1. conversion of light energy (photon) to proton gradient -> ATP
  2. ATP and H used to make glucose
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5
Q

photosynthesis equation

A

energy + 6CO2 + 6H2O -> C6H12O6 +6O2

  • CO2 is reduced to glucose
  • H2O is oxidized to O2
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6
Q

what best explains the increase in weight of the tree?

A

plants take in CO2 through their leaves

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7
Q

Photosynthesis explained

A
  • light energy is converted to chemical bond energy of glucose
  • splitting of water is source of O2
  • plants take in water through their roots
  • glucose produced to power cellular respirations
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8
Q

Stomata

A

small openings in the leaf that allow for the diffusion of O2, CO2, H2O vapor

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9
Q

Chloroplast

A

-site of photosynthesis

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10
Q

thylakoid membrane

A

site of ETC and ATP synthase

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11
Q

stroma

A

site of proteins that reduce CO2 to C6H12O6

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12
Q

thylakoid space (lumen)

A

is surrounded by the thylakoid membrane which is surrounded by the stroll space

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13
Q

matter equation of photosynthesis

A

6 CO2 + 6H2O -> C6H12O6 + 6O2

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14
Q

two stage flow of energy in photosynthesis

A

Stage 1: light reactions: splitting water and chemiosmosis

  • Radient energy ->
  • chemical bonds of ATP, NADPH

Stage 2: carbon fixation and reduction reactions

  • chemical bonds of ATP, NADPH ->
  • chemical bonds of glucose
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15
Q

what kind of reaction is glucose production?

A

exergonic reaction

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16
Q

photosynthesis in words

A
  • phosphorylation of ATP
  • oxidation of H2O
  • reduction of NADP+ to NADPH
  • oxidation of NADPH
  • reduction of CO2 to glucose
17
Q

phosphorylation

A

couples the energy of photons to the phosphorylation of ATP

18
Q

Solar radiation from the sun

A

-form of electromagnetic energy

visible spectrum: 400-700 nm

19
Q

visible light

A
  • in plants, visible light can be reflected, transmitted or absorbed by a molecule
  • reflected visible light appears as a color to our eyes
  • absorbed visible light powers photosynthesis
20
Q

pigment

A

a molecule that absorbs photons in the visible spectrum

21
Q

main pigments found in photosynthesis

A
  • chlorophyll a
  • carotenoids
  • chlorophyll b
22
Q

which of the following is an example of the transmission of visible light

A

light shining through a window

Biology 311C (47 decks)

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