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Bio Study > Ch 10 > Flashcards

Ch 10 Flashcards

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Biology 101 flashcards
1
Q

Autotrophs

A

Sustain themselves without eating anything derived from other organisms
Producers of the biosphere

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2
Q

Heterotrophs

A

Obtain their organic material from other organisms
Consumers of the biosphere
Defend on autotrophs

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3
Q

Chlorophyll

A

Green pigment within chloroplasts

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4
Q

Mesophyll

A

Interior tissue of the leaf
Contains 30 - 40 chloroplasts

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5
Q

Stomata

A

Microscopic pores where co 2 enters and 02 leaves

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6
Q

Thylakoids

A

Location of where chlorophyll is in cell
Connected sacs in chloroplast

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7
Q

Grana

A

Columns of thylakoids

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8
Q

Stroma

A

Dense interior fluid in chloroplasts

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9
Q

Wavelength of light for photosynthesis

A

Visible light 380 - 750 nm

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10
Q

Absorbption spectrum

A

Graph plotting a pigment’s light absorption versus wavelength

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11
Q

Chlorophyll a

A

Violet-blue and red light, green is the least effective
CH3 methyl group

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12
Q

Chlorophyll b

A

Not a lot of light absorption
Group of pigments called carotenoids
CHO group

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13
Q

Carotenoids

A

Hydrocarbons that are various shades of yellow and orange
Broaden spectrum of colors that drive photosynthesis

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14
Q

Phases of Calvin cycle

A

1) Carbon fixation
2) reduction
3) regeneration of carbon dioxide acceptor

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15
Q

Calvin cycle

A

Occurs in stroma
Uses chemical energy of ATP and NADPH to reduce CO2 to sugar

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16
Q

Light reactions

A

Convert solar energy to the chemical energy of ATP and NADPH
Occurs in thylakoid membranes of chloroplasts

17
Q

C3 plants

A

Exist in hot arid climates
Close stomata conserving 02 and water, keeps co 2 out
Photorespiration occurs

18
Q

photorespiration

A

Rubisco binds to oxygen and releases carbon dioxide
Consumes ATP

19
Q

C 4 plants

A

Another process of carbon fixation
Turns carbon dioxide into four carbon sugar compounds

20
Q

Cam plants

A

Crassulacean acid metabolism
Opens stomata at night
carbon dioxide is released during the day from organic acids

21
Q

Photosystem Il

A

Functions first
Best at absorbing a wavelength of 680 nm
Chlorophyll A

22
Q

Photosystem I

A

Functions second
Best at absorbing 700 nm
Chlorophyll

Bio Study (20 decks)

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