Photosynthesis

Question 1

What happens when a photon hits matter

Answer 1

It can be reflected
Transmit straight through
Absorbed
This all depends on the energy (wavelength)

Question 2

Anabolism

Answer 2

metabolic pathways that build more complex molecules from simpler ones.
Requires the input of of energy
Endergonic(requires energy from sunlight

Question 3

Autotrophs

Answer 3

Organisms that produce their own food using light, water, carbon dioxide and other chemicals
some examples, plants, some protist, algae, and cyanobacteria

Question 4

What happens in photosynthesis

Answer 4

energy, carbon dioxide and water are put into the system to create glucose and oxygen

Question 5

What is reduced and oxidized during photosynthesis

Answer 5

carbon dioxide is reduced because it gains electrons
oxygen in the water is oxidized because it loses electrons.
this reaction is endergonic: it requires energy input

Question 6

What are the two major stages photosynthesis occurs in

Answer 6

Light Reactions, and Calvin Cycle

Question 7

All you know about Light reaction

Answer 7

It takes (water), (light); It also takes (NADP+) from Calvin cycle and (ADP+ (+) Phosphate)
Location is on the Thylakoid membrane
The output is oxygen, It gives (ATP) and (NADPH) to the Calvin Cycle
This reaction only happens in the light

Question 8

Calvin Cycle

Answer 8

It takes carbon dioxide; It takes (NADPH) and (ATP) from light reactions
For the Calvin Cycle to proceed in the dark it needs (NADPH) and (ATP)
ADP and NADP+ are oxidized
The enzymes of the Calvin cycle are in the stroma

Question 9

What are the components of light reactions

Answer 9

Photosystems 1 and 2, ETC, and ATP synthesis

Question 10

Photosystems 1 and 2

Answer 10

Large complexes of proteins and pigments that help collect light energy
PS 1 tends to absorbs light of longer wavelengths (greater than 680) red
PS 2 tends to absorb shorter wavelengths (less than 680) purple

Question 11

Grana

Answer 11

Stacked thylakoids

Question 12

Stroma

Answer 12

Space between the double membrane and the the thylakoid membrane

Question 13

Lumen

Answer 13

Space inside the thylakoid membrane

Question 14

Relationship between the thylakoids and thylakoids membrane

Answer 14

The thylakoid membrane forms the thylakoid

Question 15

Pigments

Answer 15

Molecules that can absorb photons

Question 16

What happens when a molecule absorbs light

Answer 16

when a molecule absorbs light the electron is converted to a higher energy state

Question 17

What are the kinds of pigments used to capture light

Answer 17

Chlorophyll A, Chlorophyll B(these are abundant) and Carotenoids (these are less abundant). Carotenoids are antioxidants that protect and enhance your immune system

Question 18

What lights help in growing plants

Answer 18

Blue : structural/vegetative stage of plants growth. Helps the roots
Red: Flowering

Question 19

Pigment Structure

Answer 19

(Magnesium is the central element of the chlorophyll molecule that is bonded with 4 nitrogen atoms) - Part of the Porphyrin ring: light absorbing head molecule
Hydrocarbon tail - (interacts with the hydrophobic regions of proteins)

Question 20

Reaction centre

Answer 20

Incoming energy is funneled into the Reaction Centre.
This is a pair of specially arranged chlorophyll,
*** These contains the ‘special pair’ and ‘primary electron acceptor’.

Question 21

Light Harvesting Complex/ Antenna Complex

Answer 21

these contain protein and chlorophyll molecules embedded in the thylakoid membrane of plants

***Capture incoming photons

Question 22

What are the two parts of the photosystem?

Answer 22

Light Harvesting Complexes
Reaction Centres