photosynthesis Flashcards

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1
Q

limiting factors of photosynthesis

A

carbon dioxide concentration, light intensity and temperature

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2
Q

word equation for photosynthesis

A

CO2 + water —> sugar + oxygen

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3
Q

photosynthesis

A

series of enzyme controlled reactions which takes place in chloroplasts

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4
Q

light intensity - stage 1

A
  1. light energy from sun is trapped by chlorophyl into chloroplast
  2. converted into chemical energy
  3. some light energy splits water into hydrogen and oxygen
  4. oxygen diffuses into atmosphere
  5. light energy generates ATP
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5
Q

carbon fixation - stage 2

A
  1. consists of enzyme controlled reactions in cycle in chloroplasts
  2. CO2 absorbed by leaf from atmosphere
  3. CO2 reduced to form sugar
  4. ATP from light reactions provide energy for conversion
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6
Q

what is the glucose used for in carbon fixation

A
  • to convert into starch as an energy store
  • used for cell respiration
  • converted into cellulose in cell walls
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7
Q

how to determine rate of photosynthesis

A
  • rate in which green plants produce oxygen
  • number of oxygen bubbles produced over set period of time
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