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Pigments Pretty

Pigments!

Give meLight!

The Dark Side! Photo Labs Grab Bag

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Chlorophyll reflects this color of light.

What is green? 5

This is the role that chlorophyll plays in photosynthesis.

What is to absorb light energy?

10

This is what happens to electrons in a chlorophyll “a” molecule when they

absorb light.

15What is they are

excited to a higher energy level?

This is what we call pigments other than

chlorophyll.

What are accessory pigments? 20

This yellow pigment is found in plants but is not directly involved in photosynthesis.

25What is

xanthrophyll?

This is the location in the chloroplasts where the light

reactions take place.

5What is the thylakoid

membrane?

These are the two products of the light reactions that provide

energy for the Calvin cycle.

What are ATP and NADPH? 10

This is the source of the oxygen that is released during

photosynthesis.

What is water?

15

The electrons lost by Photosystem 1 are replaced by

electrons coming from here.

What is Photosystem II?

20

This process, that happens in the thylakoid membrane, is responsible for

providing energy to produce ATP molecules.

What is chemiosmosis.

25

This is the location in the chloroplasts where the Calvin

Cycle takes place.

5What is the stroma?

In the Calvin Cycle, the carbon required to make organic molecules

comes from this compound.

What is carbon dioxide?

10

In the Calvin Cycle, the hydrogen required to make organic molecules

comes from this compound.

What is NADPH? 15

At the start of the Calvin Cycle, 3 molecules of carbon dioxide combine

with this molecule to make 6 molecules of 3-PGA.

What is RuBP?(Ribulose Biphosphate)

20

One molecule of this compound is produced during the Calvin Cycle

and used to make glucose or starch.

What is G3P?(Glyceraldehyde 3-Phosphate)

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What is chromatography? 5

This technique is used to separate pigments based on their solubility in a solvent.

It is possible to demonstrate that photosynthesis is occurring by measuring the uptake of this

molecule by a plant.

What is carbon dioxide? 10

In lab, we demonstrated that photosynthesis was occurring in

geranium leaves by measuring the production of this molecule.

What is starch?

15

This pigment traveled the farthest on our chromatography

strip.

What is carotene?

20

This is the color of phenol red in a very acidic solution.

What is yellow?

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These are organisms that can make their own food.

What are autotrophs?

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These are organisms that must eat food.

What are heterotrophs?10

This is the equation for photosynthesis.

What is 6CO2 + 6H20 C6H1206 + 602

15

This is the plant organelle required for photosynthesis.

What is the chloroplast?20

These are two types of organisms other than plants that

can perform photosynthesis.

What are some bacteria and some protists?

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