Photosynthesis

Question 1

Life is powered by

Answer 1

Sunshine

Question 2

Form of photosynthesis that does not produce oxygen

Answer 2

Anoxygenic

Question 3

Form of photosynthesis that produces oxygen

Answer 3

Oxygenic

Question 4

What plant leaf organelle carries out the process of photosynthesis?

Answer 4

Chloroplasts

Question 5

What are the three stages in photosynthesis?

Answer 5

1. Capturing energy from sunlight
2. Using the energy to make ATP and to reduce the compound to NADP+, an electron carrier, to NADPH;
3. Using the ATP and NADPH to power the synthesis of organic molecules from CO2 in the air

Question 6

What absorbs the photons of light in photosynthesis?

Answer 6

Photosystems in Thylakoids

Question 7

What do the photosystems in the thylakoids generate from the photons energy?

Answer 7

ATP and NADPH

Question 8

First two stages of of photosynthesis are called the ?

Answer 8

Light- dependent reactions

Question 9

The third stage of photosynthesis is called ? When the formation of organic molecules from CO2 occurs.

Answer 9

Carbon fixation

Question 10

A series of carbon fixation reactions that are light independent that form organic molecules

Answer 10

Calvin cycle

Question 11

The thylakoids contains this for capturing light energy

Answer 11

Chlorophyll

Question 12

This semi liquid substance surrounding the thylakoids membrane is called

Answer 12

Stroma

Question 13

These act as large Antennas gathering the light energy harvested by many individual pigment molecules that are clustered together

Answer 13

Photosystems

Question 14

Columns of sacs where chlorophyll are located ( light dependent)

Answer 14

Granum (grana)

Question 15

This is outside the grana and where carbon fixation occurs

Answer 15

Stroma

Question 16

Molecules that can absorb energy from visible light

Answer 16

Pigament molecules ( chlorophyll)

Question 17

Cluster of chlorophyll and other pigment molecules and as a group it’s job is to absorb photons of light

Answer 17

Photosystems

Question 18

Shorter the wavelength of light the ________ its energy

Answer 18

Greater

Question 19

This is when A beam of light is able to remove electrons from certain molecules creating an electrical current; the photons transfer energy to electrons

Answer 19

Photoelectric effect

Question 20

Two general types of pigments that are used in green plant photosynthesis that are capable of absorbing light in the visible range

Answer 20

Chlorophylls and carotenoids

Question 21

Chlorophyll a and b absorb violet-blue and red light of the spectrum and reflect what color ?

Answer 21

Green

Question 22

____________ absorb mostly blue and green light in the spectrum and reflect orange and yellow.

Answer 22

Carotenoids

Question 23

This is the main photosynthetic pigment and the only pigment that can act directly to convert light energy to chemical energy

Answer 23

Chlorophyll a

Question 24

This acts as a accessory pigment and compliments chlorophyll a; absorbs the green wave lengths that chlorophyll a cannot

Answer 24

Chlorophyll b

Question 25

Pigment that scavenge free radicals to help protect cells ; acts as a antioxidant

Answer 25

Carotenoids

Question 26

Where individual chlorophyll molecules in a photosystem send there excited energy from the light they absorb

Answer 26

Lower level energy molecule called Reaction center chlorophyll

Question 27

Hundreds of chlorophyll pigment molecules that gather photons and feed the captured light energy to the reaction center

Answer 27

Antenna complex

Question 28

Consisting of one or more chlorophyll a molecules in a matrix protein that passes excited electrons out of the photosystem

Answer 28

Reaction center

Question 29

This is where the excited electron is transferred

Answer 29

Reaction center

Question 30

In the antenna complex ________ is passed from one pigment molecule to the next

Answer 30

Energy

Question 31

Transmembrane protein pigment complex

Answer 31

Reaction center

Question 32

4 stages of the light dependent reactions

Answer 32

1)primary photo event 2)charge separation 3) electron transport 4chemiosmosis

Question 33

The name of the reaction center pigment in the chloroplast photosystem I

Answer 33

P | 700

Question 34

The name of the reaction center chlorophyll in photosystem 2

Answer 34

P 680

Question 35

Which photosystem of the chloroplasts can generate an oxidation potential high enough to oxidize water it is also the the one that operates 1st in the light dependent reaction

Answer 35

Photosystem 2

Question 36

The process in which plants use photosystem 1&2 to produce both ATP NADPH and the electrons path do not return to the photosystems but rather end up in NADPH

Answer 36

Noncyclic photophosphorylation

Question 37

How are the photosystems replenished with electrons

Answer 37

Oxidation of water( splitting water)

Question 38

What 4 atoms in in the reaction center of photosystem 2 are important for the oxidation of water

Answer 38

Maganese

Question 39

What is the name of the protein that carries the electron pair from the electron transport chain to photosystem 1

Answer 39

Plastocyanin

Question 40

The name of the proton pump that is embedded in the thylakoid membrane ; where atp is produced

Answer 40

B6 f complex

Question 41

Where are the enzymes located that catalyze the light independent reactions of the Calvin cycle

Answer 41

Stroma

Question 42

How are mitochondria and chloroplasts similar

Answer 42

Using chemiosmosis to generate ATP

Question 43

What forms a channel that allows protons to cross back into the stroma

Answer 43

ATP synthase enzyme

Question 44

Photosystem 2 oxidizes water to

Answer 44

O2

Question 45

Photosystem 1 reduces NADP+ to

Answer 45

NADPH

Question 46

1 st phase in the Calvin cycle that contain 3 carbon atoms

Answer 46

C3 photosynthesis

Question 47

Consider to be the most abundant protein on earth

Answer 47

Rubisco

Question 48

When the RuBP reacts with the CO2 what happens after and what is this overall reaction called

Answer 48

It immediately forms a 6 carbon intermediate and splits immediately into two molecules of if 3 -PGA; carbon fixation

Question 49

What sluggish enzyme carries carries out the carbon fixation reaction

Answer 49

Rubisco

Question 50

How many molecules of RuBP does rubisco catalyze?

Answer 50

3 molecules

Question 51

How many turns of the Calvin cycle must happen in order to produce one glucose molecule

Answer 51

6

Question 52

How many phases are in the Calvin cycle

Answer 52

3 Carbon fixation Reduction Regeneration of RuBP

Question 53

What type of plants are capable of storing CO2 as a 4 carbon molecule in a hot dry environment

Answer 53

C4 plants

Question 54

What two types of C 4 plants have

Answer 54

Mesophyll cell Bundle -sheath cell

Question 55

How do C4 and CAM plants differ

Answer 55

The CAM plants use the C3 and C4 pathways in the same cell where C 4 plants use the pathways in separate cells

Question 56

The light dependent reactions of photosynthesis

Answer 56

Produce ATP , reduce NADP+ and occur in the stroma

Question 57

Which molecule in a photosystem takes energy it receives and uses it to boost electrons to a high energy state

Answer 57

Reaction center

Question 58

Which molecule is split to release electrons to replace ones boosted from the molecule of the reaction center

Answer 58

Water

Question 59

What does RuBisco do

Answer 59

Picks up CO2 from the atmosphere and attaches it to RuBP | Takes energy from NADPH and uses it to make G3 P

Question 60

In a C 4 plant

Answer 60

Co 2 is taken up by outer leaf cells and bound to a 3 carbon molecule to make a 4 carbon molecule