2.9 Photosynthesis

Question 1

Photosynthesis

Answer 1

Energy conversion
Light energy is concerted to chemical energy that is stored in carbon compounds (glucose)

Question 2

Equations of Photosynthesis

Answer 2

6CO2 + 6H20 -> C6H12O6 + 6O2

Question 3

What do organisms require to build cells and carry out life processes?

Answer 3

complex carbon compounds

idk what this question is

Question 4

What kind of light do plants use in photosynthesis?

Answer 4

visible light (light that humans can see)

Question 5

What wavelength range is visible light?

Answer 5

Between 400 and 700 nm.
Violet is the shortest and red is the longest

Question 6

What is chlorophyll?

Answer 6

A green pigment inside chloroplasts that reflects green light and absorbs all others.

Question 7

What colors of light does chlorophyll absorb best?

Answer 7

blue and red

Question 8

Can you draw/recognize a photosynthesis action spectrum?

Answer 8

you better
Link to one

Question 9

Photolysis

Answer 9

How oxygen is produced by water.

Question 10

Is oxygen a waste product or a beneficial product (to the plant)

Answer 10

a waste product. It is expelled, and they want the electrons that are generated from photolysis, not the oxygen.

Question 11

Photolysis equation

Answer 11

2H20 -> 4e- + 4H+ + O2

Question 12

What caused iron ores and glaciers to appear?

Answer 12

The Great Oxidation Event, 2,200 mya, O2 levels reaching 2%

Question 13

Is photosyntehsis endothermic or exothermic

Answer 13

endothermic

Question 14

What reactions need energy?

Answer 14

reactions that make O2 and reactions that make large molecules

Question 15

Where does the energy come from that supplies photosynthesis with energy?

Answer 15

The sunlight that chlorophyll absorbs.

Question 16

How does temperature affect photosynthesis?

Answer 16

Temp causes photosynthesis rate to increase gradually and then a steep drop. (like temp’s effect on enzymes)
link to graph to memorize

Question 17

How does light intensity affect photosynthesis?

Answer 17

Causes photosynthesis to increase drastically until a flatline where the max rate is achieved.
link to graph u need to memorize

Question 18

How does CO2 levels affect photosynthesis?

Answer 18

causes incline until the max rate is achieved and the graph flatlines
Link to graph to memorize

Question 19

When could the factors of photosynthesis become limiting?

Answer 19

When the others are closer to optimal, they can be considered limiting.
The factor farthest from optimal will be the limiting factor