3.5: Photosynthesis Introduction Flashcards

1
Q

What is photosynthesis?

A
  • The conversion of light energy to chemical energy

- plants are autotrophs (specifically photautotrophs)

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2
Q

What are autotrophs?

A
  • organisms that produce their own food (organic molecules) from simple substances in their surroundings
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3
Q

What are heterotrophs?

A
  • organisms unable to make their own food so they live off of other organisms
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4
Q

Where did photosynthesis first evolve from?

A
  • prokaryotic organisms
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5
Q

What are cyanobacteria? (2)

A
  • early prokaryotes capable of photosynthesis

- oxygenated the atmosphere of early Earth

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6
Q

What are the foundation of eukaryotic photosynthesis (protists, algae, plants)?

A
  • prokaryotic photosynthesis pathways
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7
Q

Which eukaryotic organisms are the #1 producers of oxygen on Earth?

A

Algae

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8
Q

Where in plants is the primary location of photosynthesis?

A
  • leaves
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9
Q

What is a chloroplast?

A
  • organelle for the location of photosynthesis
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10
Q

Whede is chloroplast found?

A
  • found in the mesophyll, the cells that make up the interior tissue of the leaf
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11
Q

What is a stomata?

A
  • pores in leaves that allow CO2 in and O2 out
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12
Q

Chloroplasts are surrounded by a __ ___.

A

Double membrane

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13
Q

What is the stroma of a chloroplast?

A

Aqueous internal fluid (similar to matrix)

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14
Q

What are thylakoids?

A
  • from stacks known as grana (similar to cristae)
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15
Q

What is chlorophyll?

A

Green pigment in thylakoid membranes

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