Photosynthesis Flashcards

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1
Q

Photoautotrophs

A

Use sunlight to make food (plants, algae, and cyanobacteria).

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2
Q

Chemoautotrophs,such as thermophilic bacteria…

A

Capture energy from inorganic compounds to make food.

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3
Q

Heterotrophs (animals, fungi, and most bacteria)

A

Rely on sugars produced by autotrophs for their energy needs.

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4
Q

What is an autotroph?

A

An organism capable of making its own nutritive organic molecules from inorganic materials.

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5
Q

Photosynthesis

A

Uses solar energy to produce sugar from carbon dioxide and water.

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6
Q

______ is absorbed by the _____ from the _____

A

H₂O; roots; soil

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7
Q

_____ is acquired from _____ as a result of ____

A

CO₂; air; gas

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8
Q

What exits through the stomata?

A

O₂ waste product

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9
Q

What are the 2 metabolic pathways?

A

The light reactions
The Calvin Cycle

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10
Q

Reaction outcome and location of Light Reactions:

A

light energy to chemical energy making ATP and NADPH; Occurs in the thylakoid membranes of Chloroplasts.

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11
Q

Reaction outcome and location of Calvin Cycle:

A

uses ATP and NADPH to make food; Occurs in the stroma of Chloroplasts.

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12
Q

The Chloroplasts Structure includes:

A

*Double membrane
*Stroma
*Grana
*Lumen

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13
Q

What is light energy?

A

Is electromagnetic energy, composed of photon energy particles that travel as waves.

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14
Q

Which waves carry less energy?

A

Longer waves (reds in a wave length)

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15
Q

Which waves carry more energy?

A

Shorter waves (violets in a wave length)

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16
Q

What are the main thylakiod pigments of membranes?

A

*Chlorophyll (a)
*Chlorophyll (b)
*B-carotene

17
Q

Chlorophyll a and b

A

capture light for photosynthesis which is why the leaves are green

18
Q

B-carotene

A

helps protect photosystems by dissipating excess energy

19
Q

Absorption spectrum

A

Wavelengths of light that chlorophyll can absorb and capture E

20
Q

Action spectrum

A

Range of wavelengths at which the plant can carry out photosynthesis