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Biology > Chapter 5- Key Terms And Concepts > Flashcards

Chapter 5- Key Terms And Concepts Flashcards

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1
Q

Explain the transformation of energy during photosynthesis.

A

Plants capture kinetic energy in sunlight and convert it to potential energy in covalent bonds of glucose and other carbs

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2
Q

What type of reaction is photosynthesis?

A

Redox reaction

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3
Q

What molecule is reduced and what molecule is oxidized in photosynthesis?

A

CO2 is reduced

H2O is oxidized

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4
Q

What do plants use glucose for?

A

Growth
ATP generation
Produce cellulose

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5
Q

How do plants store excess carbs?

A

As starch or sucrose

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6
Q

Which came first? Heterotrophs or autotrophs?

A

Heterotrophs

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7
Q

What molecules make up Earths atmosphere?

A

78% Nitrogen
21% Oxygen
1% Trace gases

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8
Q

What is the primary photosynthetic pigment in plants?

A

Chlorophyll alpha

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9
Q

What light is absorbed by Chlorophyll A?

A

Violet and red light

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10
Q

What light is best absorbed by chlorophyll B?

A

Blue and orange light

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11
Q

Through what do plants exchange gases?

A

Stomata

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12
Q

What is the gelatinous substance in chloroplast?

A

Stroma

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13
Q

What do photo systems consist of?

A

Antenna pigments and a reaction center

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14
Q

What is an autotroph

A

An organism that makes organic matter from something inorganic

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15
Q

What are the two reactions that happen in photosynthesis?

A

Light and Carbon reactions

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16
Q

What does a light reaction produce?

A

ATP and NADPH

17
Q

Which photosystem comes first?

A

Photosystem 2

18
Q

Photosystem 2 uses chlorophyll A and what other molecule?

A

Water

19
Q

What is the waste product of photosystem 2?

A

Oxygen

20
Q

The movement energy throughout the ETC powers what process?

A

Phosphorlyation

21
Q

The coupling of proton gradient and ATP formation is called?

A

Chemiosmotic Phosphorlyation

22
Q

Electrons from photosystem 1 reduce NADP+ to what?

A

NADPH

23
Q

Carbon reactions use _____ and electrons from _____.

A
  • ATP

- NADPH

24
Q

What catalyzes a carbon reaction?

A

RuBisCo

25
Q

What goes into a Carbon Reaction?

A

3 molecules of CO2

26
Q

What comes out of a Carbon Reaction?

A

1/2 molecule of glucose

27
Q

What is photo respiration?

A

The process of converting oxygen into carbon dioxide that will be used in a carbon reaction.

28
Q

In the CAM pathway, when do plants open their stomata?

A

At night

Biology (8 decks)

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