Photosynthesis and Pigments

What is the role of chlorophyll in photosynthesis?

• Chlorophyll absorbs carbon dioxide and releases oxygen.

• Chlorophyll captures light energy and converts it into chemical energy.

• Chlorophyll provides structural support to plants.

• Chlorophyll helps in the process of cell division.

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Name two types of pigments involved in photosynthesis.

• chlorophyll and carotenoids

• cytochromes and flavonoids

• xanthophylls and anthocyanins

• hemoglobin and melanin

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What is the absorption spectra of pigments?

• The absorption spectra of pigments is the range of wavelengths of light that a pigment can emit

• The absorption spectra of pigments is the range of wavelengths of light that a pigment cannot absorb

• The absorption spectra of pigments is the range of wavelengths of light that a pigment can reflect

• Range of wavelengths of light that a pigment can absorb

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NGSS.HS-LS2-5

What is the purpose of paper chromatography in studying pigments?

• To determine the pH level of pigments in a mixture.

• To separate and identify pigments in a mixture.

• To measure the temperature at which pigments separate.

• To calculate the density of pigments in a mixture.

What is fluorescence in chlorophyll?

• Absorption of light by chlorophyll molecules when they emit light energy

• Emission of light by chlorophyll molecules when they absorb light energy

• Emission of light by chlorophyll molecules when they do not absorb light energy

• Emission of heat by chlorophyll molecules when they absorb light energy

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NGSS.HS-LS2-5

Which pigment is responsible for the green color of plants?

• hemoglobin

• carotene

• melanin

• chlorophyll

What are the two main types of chlorophyll?

• Chlorophyll x and chlorophyll y

• Chlorophyll a and chlorophyll b

• Chlorophyll 1 and chlorophyll 2

• Chlorophyll c and chlorophyll d

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How does chlorophyll absorb light energy?

• photosynthesis

• chlorophyll reflects light energy

• chlorophyll emits light energy

• chlorophyll converts light energy into chemical energy

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What is the function of accessory pigments in photosynthesis?

• Accessory pigments help absorb and transfer light energy to chlorophyll molecules.

• Accessory pigments protect chlorophyll molecules from damage.

• Accessory pigments convert light energy into chemical energy.

• Accessory pigments are responsible for storing excess light energy.

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How does the absorption spectrum of chlorophyll differ from that of other pigments?

• Chlorophyll absorbs light most efficiently in the green region of the electromagnetic spectrum.

• Chlorophyll absorbs light equally in all regions of the electromagnetic spectrum.

• Chlorophyll absorbs light most efficiently in the yellow region of the electromagnetic spectrum.

• Chlorophyll absorbs light most efficiently in the red and blue regions of the electromagnetic spectrum, while reflecting or transmitting green light.

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