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Bio 20 Photosynthesis and Cellular Respiration > Photosynthesis Pigments and Molecules > Flashcards

Photosynthesis Pigments and Molecules Flashcards

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Biology 101 flashcards
1
Q

Light Energy is needed for..

A

Photosynthesis

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2
Q

Light travels in waves called..

A

Photons

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3
Q

Photons is a..

A

Small unit of energy

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4
Q

Protons with short wavelengths have..

A 
HIGH energy (Bad for us)
- Ex. UV rays, X-rays, Gramma rays
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5
Q

Protons with long wavelengths have..

A

LOW energy

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6
Q

Plants uses ___ energy for photosynthesis

A

Visible light energy (Medium light energy)

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7
Q

Chlorophyll pigment is found in..

A

plants, algae, protists and cyanobacteria

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8
Q

A pigment is..

A

A compound that absorbs some colour of light and reflects another colour

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9
Q

Chlorophyll absorbs ___ which begins the process of photosynthesis.

A

Absorbs PHOTONS

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10
Q

What is the most important pigment?

A

Chlorophyll A

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11
Q

What colours does Chlorophyll A reflects when absorbing blue and red light?

A

Green / yellow

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12
Q

What are the 2 other pigments in most plants?

A

Chlorophyll B and Beta-carotene

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13
Q

What is the function of Chlorophyll B and Beta-carotene?

A

Absorbs photon wavelengths and passes their energy to Chlorophyll A

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14
Q

Chlorophyll B absorbs lighter ___ and ___ light

Beta-carotene absorbs ___ and ___ light

A

Chlorophyll B absorbs blue and orange light

Beta-carotene absorbs blue and green light

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15
Q

During fall, the amount of chlorophyll in plants is reduced because of..

A

the decreased rate of Photosynthesis. During the fall, we are given longer nights and less day, due to this, plants receive less sunlight.

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16
Q

What are the 2 energy containing molecules formed during photosynthesis?

A

ATP and NADPH

17
Q

What is ATP?

A

ATP is the principle energy supply molecule for cellular function of all cells

18
Q

ATP is formed by an addition of..

A

ADP and Phosphate

19
Q

What causes the formation of NADPH?

A

During photosynthesis, NADP accepts 1 Hydrogen ion and 2 e- to form NADPH

20
Q

NADPH is an electron donor, thus it can become..

A

NADP

21
Q

NADPH is involved in..

A

Energy transfer

22
Q

Oxidation is an reaction when when an atom or molecule..

A

Loses electrons

23
Q

Reduction is when an atom or molecule..

A

Gains electrons

24
Q

Reduction of NADP

A

NADP + H = NADPH

25
Q

Oxidation of NADPH

A

NADPH = NADP + H

Bio 20 Photosynthesis and Cellular Respiration (6 decks)

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