Exercise 6

Question 1

Photosynthesis formula

Answer 1

12H2O + 6CO2 —> 6O2 + C6H12O6 + 6H2O

Question 2

Light reaction

Answer 2

produces oxygen we breathe, ATP & NADPH

Question 3

Dark Reaction

Answer 3

CO2 + ATP + NADPH —> C6H12O6

Question 4

Where can the dark reaction occur?

Answer 4

In light or dark

Question 5

What do plants store extra sugar as?

Answer 5

Starch

Question 6

Why do we see color?

Answer 6

When light hits a pigmented surface, some wavelengths are absorbed and others are reflected/transmitted. The colors that are reflected are the colors that we see.

Question 7

What reflects the colors?

Answer 7

the photosynthetic pigment chlorophyll

Question 8

Absorption spectrum

Answer 8

a spectrum of light waves absorbed by a particular pigment

Question 9

Order of the color pigments

Answer 9

Yellow
Light Green
Dark Green
Gray
Orange

Question 10

Yellow

Answer 10

xanthophyll

Question 11

Light green

Answer 11

Chl B

Question 12

Dark Green

Answer 12

Chl A

Question 13

Gray

Answer 13

Phaeophytin

Question 14

Orange

Answer 14

Carotene

Question 15

Autotrophs

Answer 15

synthesize organic molecules from inorganic carbon dioxide (make their own food)

Question 16

Heterotrophs

Answer 16

rely directly or indirectly on autotrophs for their nutritional carbon and metabolic energy

Question 17

What happens during the light reaction?

Answer 17

The H2O breaks off and becomes O2

Question 18

A device used for viewing the spectrum of light is a

Answer 18

spectroscope

Question 19

The raw materials used for photosynthesis include

Answer 19

CO2 + H2O

Question 20

Products and byproducts of photosynthesis do NOT include

Answer 20

CO2

Question 21

A paper chromatogram is useful for

Answer 21

Separating pigments based on their physical characteristics

Question 22

What pigments would you find in a geranium leaf

Answer 22

Chlorophyll a, chlorophyll b, carotenoids

Question 23

Which reagent would you use to determine the distribution of carbohydrate stored in leaves?

Answer 23

Benedict’s solution

Question 24

An example of a heterotrophic organism is

Answer 24

a human

Question 25

Organisms are capable of producing their own food are known as

Answer 25

autotrophs

Question 26

Grana are

Answer 26

the site of ATP production within chloroplasts

Question 27

The ultimate source of energy trapped during photosynthesis is

Answer 27

sunlight