photosynthesis what the fuck

Question 1

What is the chloroplast?

Answer 1

It is a eukaryotic organelle that absorbs energy from sunlight

Question 2

What does the spilting of H20 do?

Answer 2

it provides the electrons for photosynthesis

Question 3

What is the stroma? What occurs here?

Answer 3

it is a dense fluid within the chloroplast

the calvin cycle

Question 4

What are thylakoids? What occurs here

Answer 4

they are sacs within the stroma, they contain plant pigments and are the sites of light reactions

Question 5

What are granums?

Answer 5

they are thylakoids stacked in columns

Question 6

What is the stomata

Answer 6

pores on the leaf where CO2 enters and O2 exits

Question 7

What is chlorophyll? What does it do?

Answer 7

the green pigment that resides in the thylakoid membranes of the chloroplasts

it absorbs light energy that drives the synthesis of organic molecules within the chloroplast

Question 8

what is a photosystem? Where is it?

Answer 8

it is found within the thylakoid membranes where the chlorophyll molecules are organized into photosystems

Question 9

what does a photosystem consist of ?

Answer 9

Light harvesting complexes
Reaction center complex

Question 10

What is a light-harvesting complex?

Answer 10

they are pigment molecules within the system that funnel the energy of photons (through passing of excited e- states) to the reaction center

Question 11

what is the reaction center?

Answer 11

It consists of one of more chlorophyll a molecules and passes excited electrons out of the photosystem

Question 12

What wavelength does photosystem II absorb?

Answer 12

680nm (P680)

Question 13

What wavelength does photosystem I absorb

Answer 13

700 nm (P700)

Question 14

What is oxidized and reduced in photosynthesis?

Answer 14

H2O is oxidized, CO2 is reduced

Question 15

what are pigments

Answer 15

they are substances that absorb visible light

Question 16

what is chlorophyll a

Answer 16

it is the main photosynthetic pigment, it absorbs blue-violet and red

Question 17

what is chlorophyll b?

Answer 17

it is an accessory pigment used to broaden the spectrum for photosynthesis

Question 18

what are carotenoids

Answer 18

they are accessory pigments that absorb excessive light that would damage chlorphyll

Question 19

what happens when a pigment absorbs light?

Answer 19

it goes from a ground state to an excited state

Question 20

What are the primary events of light reactions

Answer 20

1. Primary photoevent
2. Charge Separation
3. Electron Transport
4. Chemiosmosis

Question 21

1. Primary photoevent

Answer 21

photon of light is captured by a pigment

Question 22

Charge Separation

Answer 22

energy is transferred to the reaction center, an excited electron is transferred to an acceptor molecule

Question 23

electron transport

Answer 23

electrons move through carriers to reduce NADP+ to NADPH

Question 24

what happens in the chemiosmosis of light reactions?

Answer 24

produces ATP

Question 25

what is the difference in atp production between the mitochondria and the chloroplast?

Answer 25

ATP is produced in the mitochondrial matrix

Atp and NADPH are produced on the side facing the stroma so they are available to the Calvin cycle

Question 26

what are the similarities and differences between the chloroplasts and the mitochondria in ATP production?

Answer 26

they both generate ATP by chemiosmosis

Mitochondria transfer chemical energy from food to ATP

Chloroplasts transform light energy into the chem energy of ATP

Question 27

What are the differences in spatial organization of chemiosmosis between the chloroplasts and mitochondria?

Answer 27

in the mitochondria, the protons are pumped to the intermembrane space and drive ATP synthesis as they diffuse back into the matrix

in chloroplasts, protons are pumped into the thylakoid space and drive ATP synthesis as they diffuse back into the stroma

Question 28

what are the primary events of light reactions

Answer 28

H2O is spilt to release electrons to replace the lost e- in P680

Oxygen is released

NADP+ is reduced to NADPH at photosystem I

ATP is generated by photophosphorylation

Question 29

what are the primary events of the Calvin Cycle

Answer 29

it begins with Carbon fixation and turns 3x to produce one G3P molecule using ATP and NADPH

Question 30

what are primary electron acceptors

Answer 30

they accept an excited electron from chlorophyll a

Question 31

what wavelength does photosystem II absorb?

Answer 31

680

Question 32

what is the name of the reaction center in PS II

Answer 32

P680

Question 33

What wavelength does photosystem I absorb?

Answer 33

P700

Question 34

what are light harvesting complexes

Answer 34

pigment molecules bound to proteins that funnel energy from photons to the reaction center

Question 35

what is the reaction center complex?

Answer 35

consists of one or more chlorophyll a molecules, they pass the excited electrons out of the photosystem and down the electron transport chain

Question 36

what is the name of the sugar produced by the calvin cycle and how many cycles does it require

Answer 36

glyceraldehyde 3-phosphate, it cycles 3 times for 1 G3P

Question 37

what are the three phases of the calvin cycle

Answer 37

carbon fixation, reduction, and the regeneration of the CO2 acceptor

Question 38

whats the name of the enzyme that catalyzes carbon fixation

Answer 38

Rubisco