Chapter 10 - Photosynthesis Flashcards

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1
Q

what is photosynthesis?

A

when light energy is converted to chemical energy that is stored in sugar and other organic molecules

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2
Q

what does the sugar formed during photosynthesis do?

A

Sugar made provides chemical energy and carbon skeletons to make other organic molecules

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3
Q

where do plants store excess sugar formed by photosynthesis?

A

Plants store this excess sugar as starch in structures such as roots, tubers, seeds, fruits

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4
Q

what are autotrophs?

A

self feeders that sustain themselves without eating anything derived from other living beings

Source of organic compounds for non-autotrophic organisms = producers

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5
Q

what do autotrophs produce their organic molecules from?

A

Produce their organic molecules from CO2 and other inorganic raw materials from the environment

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6
Q

what are photoautotrophs?

A

Plants are photoautotrophs: organisms that use light as a source of energy to synthesize organic substances

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7
Q

where does photosynthesis occur?

A

Photosynthesis occurs in plants, algae, unicellular eukaryotes, and some prokaryotes (bacteria)

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8
Q

what are heterotrophs?

A

obtain organic material by feeding off of compounds produced by other organisms since they’re unable to make their own food = consumers

  • Rely on photoautotrophs for organic molecules (food) and for O2
  • Decomposers: consume the remains of dead organisms by decomposing and feeding on organic litter like carcasses, feces, leaves (fungi, prokaryotes)
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