Chapter 2- Photosynthesis Flashcards Preview

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Flashcards in Chapter 2- Photosynthesis Deck (14):
1

What is light made up of?

Of wavelengths

2

Visible light has a range of what?

Wavelengths which are on a spectrum of electromagnetic radiation with violet the shortest and red the longest

3

What does chlorophyll absorb and reflect ?

Absorbs red and blue light most effectively and reflects green light more than other colours

4

What are the first stages of photosynthesis?

Absorption of sunlight - involves chemical substances called pigments

5

Why does chlorophyll appear green to us?

Absorbs red and blue light effectively and reflects the green light back to us

6

Oxygen is produced in photosynthesis from what?

Photolysis of water

7

What are one of the consequences of photosynthesis

The rise in the oxygen concentration of the atmosphere- known as the great oxidation event

8

Photosynthesis caused what?

Changes to the earths atmosphere, oceans and rock deposition

9

Why is energy needed in the production of carbohydrate?

To produce carbohydrates and other carbon compounds from carbon dioxide

10

What is the formula for plants to make carbohydrate?

Carbon dioxide + water --> carbohydrates + oxygen

11

How is the energy produced for the conversion of carbon dioxide into carbohydrates?

Obtained by absorbing light

12

What are the limiting factors on the rate of photosynthesis?

Temperature, light intensity and carbon dioxide concentration

13

What is said according to the concept of limiting factors ?

Only one of the factors is actually limiting the rate of photosynthesis

14

What is photosynthesis?

Is the production of carbon compounds in cells using light energy

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