Photosynthesis Flashcards

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1
Q

Photosynthesis forms energy by

A

Photosynthesis

Captures energy from light turns into organic molecules

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2
Q

what is Photoautotrophs

A

use light as a
source of energy to synthesize
organic molecules

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3
Q

what is Chemoautotrophs

A
use 
inorganic energy sources such 
as hydrogen sulfide, elemental 
sulfur, ferrous iron, molecular 
hydrogen, and ammonia
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4
Q

what are Autotrophs

A

self feeders

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5
Q

what are Heterotrophs

A

other feeders, do not get energy from ligh

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6
Q

where does Photosynthesis occurs in

A

chloroplasts

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7
Q

What are Mesophyll cells and the stroma

A

Receive water, and little door ways that can let gasses in and out

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8
Q

Photosynthesis as a redox reaction

A

Endergonic and Not spontaneous (requires energy). 6 carbon +6 hydrogen +light energy.

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9
Q

Cellular respiration as a redox reaction

A

Basically reversed photosyntesis redox reaction

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10
Q

The “photo” part

A

light reactions. h2o source of electrons and proteins. ATP- chemical energy. NADPH- reducing power

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11
Q

The “synthesis”part

A

Calvin cycle

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12
Q

what happens to oxygen in “photo” part

A

oxygen become oxidized

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13
Q

whats happens to carbon

A

carbon becomes reduced

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14
Q

what is NADP+

A

electron carrier in photosynthesis

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15
Q

porphyrin ring purpose in harvesting light energy

A

light-absorbing head of molecule; magnesium atom center

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16
Q

Hydrocarbon tail purpose

A

interacts with hydrophobic regions of proteins in thylakoid membranes

17
Q

what are photons and wavelengths

A

light behaves in particle-like photons. the shorter the wavelength the greater the energy of each photon

18
Q

what is Chlorophyll b

A

absorbs light energy, has carbonyl group

19
Q

what is Chlorophyll a

A

chlorophyll a is the primary pigment of photosynthesis. It’s responsible for absorbing light in the orange to red and violet to blue spectrum that provides the energy

20
Q

what are Carotenoids

A

pigmants that are produced by plants and algae

21
Q

what happens when a Chlorophyll molecule absorbs a photon of light

A

one of the molecules electrons get elevated to where it has more potential energy

22
Q

what is a photosystem

A

complex where chlorophyll molecules are organized with other small molecules

23
Q

what is the photoystem composed of

A

reaction center complex. light-harvesting complexes.

24
Q

what is reaction-center complex

A

holds chlorophyll

a and the primary electron acceptor.

25
Q

what is the primary electron acceptor

A

is a molecule
capable of accepting electrons and becoming
reduced

26
Q

what is ight-harvesting complex

A

hold pigment
molecules bound to proteins that allow plant
to harvest light over larger area and larger
part of visible spectrum. They are the
antennae for the reaction center complex.

27
Q

what is Linear electron flow

A

Energy is transferred as electrons move through

the photosystems and other molecules in the thylakoid membrane.

28
Q

The Calvin Cycle components

A

Carbon enters the Calvin
cycle as CO2and leaves in the form of sugar. cycle expends ATP as an energy source and consumes NADPH adding high potential-energy electrons to make the sugar

29
Q

what is Carbon fixation

A

Carbon fixation is the process of incorporating CO2into organic material