Photosynthesis

Question 1

Photosynthesis

Answer 1

• the most important chemical process on earth
• the process which plants use energy from the sun to make sugars from carbon dioxide and water

Question 2

What does Photosynthesis Provide?

Answer 2

food and energy for all living creatures who eat plants

Question 3

Who relies on Photosynthesis?

Answer 3

Plants

Question 4

Why do Plants rely on Photosynthesis?

Answer 4

to produce glucose

Question 5

Electromagnetic Spectrum

Answer 5

1. radio
2. microwave
3. infrared
4. visible
5. ultraviolet (UV)
6. x-ray
7. gamma ray

Question 6

What light do humans see?

Answer 6

visible

Question 7

Color

Answer 7

• the color of an object is due to the way objects interact with light
• the color perspective is the wavelength of light that is reflected and the rest of the wavelengths are observed

Question 8

Pigments

Answer 8

molecules (protiens) that absorb light energy and determine the color of an object

Question 9

True or False: pigments reflect, transmit and absorb various wavelength on the electromagnetic spectrum?

Answer 9

Ture

Question 10

Where are pigments located in the Plant?

Answer 10

Chlorophyll

Question 11

Chlorophyll A

Answer 11

• absorbs blue-violet and red light, reflects green light
• Primary Pigment in Photosynthesis

Question 12

Chlorophyll B

Answer 12

• absorbs blue and orange light, reflects yellow - green
• assist chlorophyll a in absorbing light energy

Question 13

Carotenoids

Answer 13

reflect yellow-orange/brown, absorbs everywhere else

Question 14

Where does photosynthesis occur?

Answer 14

Chloroplasts

Question 15

Do Plants have many pigments?

Answer 15

Yes, that accounts for the variation of colors in plants.

Question 16

True or False: Chlorophyll A is only responsible for photosynthesis

Answer 16

False; both a and b are responsible for photosynthesis

Question 17

Photosynthesis equation

Answer 17

CO2 + H20 —–> C6 H12 O6+O2
(Carbon Dioxide + Water —–> Glucose + Oxygen)

Question 18

Photosynthesis Reactants

Answer 18

CO2 & H20
(Carbon Dioxide & Water)

Question 19

Photosynthesis Products

Answer 19

C6 H12 O6 & O2
(Glucose ((Sugars)) & Oxygen)

Question 20

Photosynthesis Reactions

Answer 20

1. Light - Dependent Reaction
2. Light - Independent Reaction

Question 21

Light - Dependent Reaction

Answer 21

AKA: Light Reaction
- solar energy is absorbed by pigments in the chloroplast and is used to make ATP and NADPH

Question 22

Light - Independent Reaction

Answer 22

AKA: Calvin Cycle
- ATP & NADPH are used to make sugars from H2O & CO2

Question 23

What do Plants Start Photosynthesis with

Answer 23

Water and Carbon Dioxide = Bulid glucose

Question 24

What do Plants finish Photosynthesis with?

Answer 24

Oxygen - released into the atmosphere
Glucose - used for energy or stored for later usages

Question 25

Limiting Factors of Photosynthesis

Answer 25

1. Light Intensity 2. Temperature 3. CO2 Levels

Question 26

Light Intensity

Answer 26

- as light intensity increases the rate of photosynthesis will also increase - as light becomes faster, it cant photosynthesize faster - light is a necessary reactant to catalyze the reaction (photosynthesis)

Question 27

Temperature

Answer 27

- the process of photosynthesis takes place very slowly at low and high temperatures - a plant photosynthesis faster at warmer temperature, due to it being an ENZYME CATALYZED REACTION

Question 28

CO2 Levels

Answer 28

- the more CO2 a plant is exposed to, the faster photosynthesis will occur - CO2 = reactant of photosynthesis - More reactant = more product