Lab 6 Photosynthesis

Question 1

What is the photosynthesis equation?

Answer 1

6 H2O + 6 CO2 —> C6H12O6 + 6 O2

Question 2

What is the ecological role of photosynthetic organisms?

Answer 2

They take in light energy and produce food (a different kind of energy)

Question 3

What are pigments?

Answer 3

Substances that absorb certain wavelengths and reflect other wavelengths

Question 4

What is the primary photosynthetic pigment?

Answer 4

Chlorophyll A

Question 5

What are the secondary pigments?

Answer 5

Chlorophyll B, Carotenoids, Xanthophylls

Question 6

Function of Chlorophyll B

Answer 6

Reflects yellow-green light

Question 7

Function of Carotenoids

Answer 7

Reflects orange and absorbs free radicals

Question 8

Function of Xanthophylls

Answer 8

Reflects yellow

Question 9

For most plants, what structure is the site for photosynthesis?

Answer 9

Leaves are the site for photosynthesis in a lot of plants.

Question 10

Cuticle

Answer 10

waxy outer surface of the leaf

Question 11

Mesophyll Cells

Answer 11

Cells where photosynthesis occurs; made up of both palisade and spongy.

Question 12

Guard Cells

Answer 12

Cells that surround the stoma

Question 13

Stroma

Answer 13

Area of the chloroplast where light independent reactions occur

Question 14

Stomata

Answer 14

small pores on the surface of a leaf that allows for gas exchange

Question 15

Thylakoids

Answer 15

Area of the chloroplast where light dependent reactions occur

Question 16

What is a wavelength?

Answer 16

The movement of photons in a pattern; longer means less energy, shorter means more energy

Question 17

Define Electromagnetic Spectrum

Answer 17

The total range of light energy

Question 18

What organelles do you find in chloroplasts?

Answer 18

Grana (granum), thylakoids, stroma

Question 19

Grana (Granum)

Answer 19

Stacks of thylakoids

Question 20

What is the purpose of phenol red pH indicator?

Answer 20

It is used to show whether CO2 is being consumed or produced in a reaction.