Photosythesis

Question 0

Photosythesis formula

Answer 0

6CO2 + 6H2O + sun light ➡️ C6H12O6 + 6O2

Question 1

Photosynthesis

Answer 1

Process of using the sun’s light, water and CO2 to make sugar (glucose) and water

Question 2

Where does photosythesis happen?

Answer 2

Chloroplast

Question 3

What are the two stages?

Answer 3

Light reaction

Calvin cycle

Question 4

What happens during light reaction?

Answer 4

Turns the suns light into usable, chemical energy = ATP

Question 5

What happens during the Calvin cycle?

Answer 5

Uses the ATP made during the light reaction to recombine H2O and CO2 into glucose
Happens in the stroma

Question 6

Photons

Answer 6

Little pockets of light

Question 7

Light can travel as what and what?

Answer 7

Photon and wavelength

Question 8

What colors make up white light?

Answer 8

Roygbiv

Question 9

What is the longest and shortest wavelength

Answer 9

Red is the longest and violet is the shortest

Question 10

White reflects all colors

Answer 10

Black absorbs

Question 11

Pigments

Answer 11

Pigments absorb light energy and turn in into usable energy (ATP)
Chlorophyll (green pigment) is the most important type in most plants (2 types = a and b)
Chlorophyll is stored in the chloroplast and allows the light reaction to occur
There are other pigments in most plants called carotenoids and xanthophyll; these are yellow, red and orange in color

Question 12

Photo system one?

Answer 12

Also called P700 (absorb red light with 700nm wavelength)
First one discover but is the second involved in the light reaction

Question 13

Photosystem two?

Answer 13

P680 (absorbs orange-red light with 680nm wavelength)

Question 14

Steps of light reaction

Answer 14

A chlorophyll molecule at Photosystem II absorbs a photon and an electron from the molecule becomes excited

Question 15

Next

Answer 15

The electron bounces to the next energy level; this is unstable so it quickly loses energy and falls back

Question 16

Then

Answer 16

The electron is passed to an electron acceptor which is reduced and the chlorophyll is oxidized

Question 17

Next

Answer 17

As the electrons move down the electron transport chain, H+ ions are pumped in the thylakoid lumen

Question 18

What does this create

Answer 18

This creates a concentration gradient

Question 19

Next

Answer 19

H+ ions diffuse back into the stroma through the ATP Synthase creating ATP

Question 20

Then

Answer 20

Electrons are re-excited at Photosystem I before they are passed to another electron acceptor

Question 21

Next

Answer 21

Final electron acceptor is NADP+ which is reduced to NADPH

Question 22

Lastly

Answer 22

PSII regains electrons by splitting water; this also makes O2