Chapter 10: Photosynthesis Flashcards

1
Q

Autotroph

A

Self feeder, sustains itself without eating anything derived from other organisms. The producers of the biosphere

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2
Q

Heterotrophs

A

Obtain organic material from other organisms, the consumers of the biosphere

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3
Q

Chloroplast

A

Location of photosynthesis. Located in special plant cells

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4
Q

Stomata

A

Pores in a leaf that allow CO2 and O2 to enter and leave

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5
Q

Thylakoids

A

Interconnected membrane sacs in the chloroplast

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6
Q

Thylakoid space

A

The space inside of the thylakoid

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7
Q

Stroma

A

Dense fluid in the chloroplast (the cytoplasm of the plant)

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8
Q

Grana

A

Stack of thylakoids

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9
Q

Wavelength

A

The measure of the distance between crests of electromagnetic waves

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10
Q

Electromagnetic spectrum

A

Entire range of electromagnetic energy, or radiation

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11
Q

Visible light

A

Wavelengths from 380nm to 740nm, drives photosynthesis and provides the colors seen by the human eye

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12
Q

Pigment

A

A compound that absorbs light

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13
Q

Chlorophyll A

A

The key light-capturing pigment

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14
Q

Accessory pigments

A

Chlorophyll B and Carotenoids

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15
Q

Photosystems

A

Chlorophyll molecules, other pigments, and proteins organized into clusters that harvest light

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16
Q

Light harvesting complex

A

Pigment molecules that absorb/transfer energy and proteins

17
Q

Reaction center complex

A

Pair of chlorophyll A molecules that use energy of a nearby excited electron to boost an electron to higher energy and transfer it to the primary electron acceptor

18
Q

Primary electron acceptor

A

Accepts electrons and gets reduced

19
Q

Light reactions

A

Light dependent reactions occurring in the thylakoid, captures light energy

20
Q

Calvin cycle

A

Light independent reactions occurring in the stroma, joins ATP, NADH, and CO2 into carbohydrates

21
Q

Carbon fixation

A

Incorporating CO2 into organic molecules

22
Q

Photosystem II

A

Reaction center: P680, first step in photosynthesis

23
Q

Photosystem I

A

Reaction center: P700, makes NADPH, second step in photosynthesis

24
Q

Three products of non-cyclic phosphorylation

A

Oxygen, ATP, NADPH

25
Products of cyclic phosphorylation
ATP. That’s it
26
Photorespiration
Consumes O2 and organic fuel and releases CO2 without producing ATP or sugar
27
C4 and CAM plants
Forms of photorespiration separated spatially (C4), and temporally (CAM)