Phreakin Photosynthesis

Question 2

What is the equation for photosynthesis (with coefficients)

Answer 2

6 CO2 + 12 H2O –> C6H12O6 + 6O2 + 6H2O

Question 3

The experiment they used to decide whether water or carbon dioxide was present in O2 was..

Answer 3

using an isotope O18 to tag both carbaon dioxide and water

Question 4

Molecules become ___ when the absorb photons

Answer 4

excited

Question 5

Two types of photosynthesis reactions

Answer 5

LightDark (light-independent)

Question 6

Types of pigments that absorb energy for photosynthesis

Answer 6

chlorophyllaccessory pigments

Question 7

how many types of chorophyll

Answer 7

2 (a and b)

Question 8

Cholrophyll have long ____ chains that connect to ___ in the ____ in the ____

Answer 8

hydrocrabonproteins in the thylakoids in the chloroplast

Question 9

What colors do chlorophyll absorb?

Answer 9

red and blue light

Question 10

What pigments absorb other colors than red and blue

Answer 10

accessory pigments

Question 11

types of accessory pigments

Answer 11

carotenoids and phycobillins

Question 12

Light absorption results in a _____ change

Answer 12

photochemical

Question 13

pigments are arranged into energy-absorbing

Answer 13

antenna systems (light-harvesting complexes)

Question 14

Antenna systems make up the

Answer 14

photosystem

Question 15

What photosystem spans the ____and surrounds the ____

Answer 15

thylakoidreaction center

Question 16

Chlorophyll has 2 vital roles in photosynthesis, what are they

Answer 16

absorb light into excited electronstransfer elections to chemical changes

Question 17

The excited electron finally ends up at _____ which gets reduced to ____

Answer 17

NADP –> NADPH

Question 18

The two different systems of e- transport

Answer 18

noncycliccyclic

Question 19

Noncyclic electron transport makes

Answer 19

ATP and NADPH and O2

Question 20

Cyclic transport electron transport makes

Answer 20

only ATP

Question 21

Equation for N-cyclic ET

Answer 21

H20 –> 1/2 O2 + 2H+

Question 22

N-cyclic ET ____ water

Answer 22

oxidizes

Question 23

For n-cyclic ET, how many photosystems are req?

Answer 23

2PS IPS II

Question 24

Photosystem I (PS I) does what

Answer 24

reduces NADP+ into NADPH

Question 25

Photosystem II (PS II) does what

Answer 25

oxidizes H2O

Question 26

In n-cyclic ET, the e- follows the "z-scheme", what is the order of events?

Answer 26

photon hits reaction centerPSII (water gets oxidized)ATP synthesizedphoton hits other reaction centerPS I ( reduces NADP+)NADPH synthesized

Question 27

During n-cyclic ET, not enough ATP formed so ______ makes up for it

Answer 27

cyclic ET

Question 28

cyclic ET uses which system?

Answer 28

PS I only

Question 29

Photophosphorylation operates where?

Answer 29

in the choloroplast

Question 30

\_\_\_\_\_\_\_\_ is the sources of ATP made in \_\_\_\_\_

Answer 30

chemiosmosis photophosphorylation

Question 31

What revealed steps in the calvin cycle?

Answer 31

radioisotopes

Question 32

3 parts of the Calvin cycle

Answer 32

fixationreductionregeneration

Question 33

What is the product of the calvin cycle?

Answer 33

Glyceraldehyde 3-phosphate (G3P)

Question 34

What stimulates the calvin cycle?

Answer 34

light

Question 35

What sources of energy does the calvin cycle use?

Answer 35

NADPH and ATP

Question 36

The stroma is the site of

Answer 36

dark reactions

Question 37

Goal of light reactions

Answer 37

make ATP and NADPH to provide power to reducing power to make sugars

Question 38

Mechanism for photosynthesis dependent on

Answer 38

potential energy from H+

Question 39

Light reactions occur in the

Answer 39

thylakoids

Question 40

Describe the chemiosmotic synthesis of ATP

Answer 40

-light increase the potential of an electron-energy from transferring electron drives H+ into thylakoid and makes pH gradient-potential energy of pH drives ATP synthesis

Question 41

photorespiration occurse at

Answer 41

high temperature in light

Question 42

Main cells that are involved in the dark reactions (C3 C4 etf)

Answer 42

bundle sheath cells

Question 43

how many turns of the calvin cycle is needed for 1 sugar?

Answer 43

6

Question 44

C4 plants have ____ separation of fixation and calvin cycle

Answer 44

spatial

Question 45

bundle sheaths are "ringed" by

Answer 45

mesophyll

Question 46

Crassualcean Acid Metabolism

Answer 46

CAM plants

Question 47

CAM plants develop in ___ environments

Answer 47

arid

Question 48

Water loss is minimized in CAM plants by

Answer 48

reversing the stomatal cycle

Question 49

4C compound is stored where in C4 plants? where in CAM plants?

Answer 49

transfered to adjacent cellin vacuole

Question 50

In CAM plants the fixation and calvin cycle are separated

Answer 50

temporally

Question 51

Compount C4 and CAM plants make

Answer 51

OAA

Question 52

Bundle sheaths are characteristic of what dark process?

Answer 52

C4

Question 53

C4 plants require what extra?

Answer 53

extra ATP/CO2 (2)

Question 54

CAM plants avoid dehydration by

Answer 54

temporal separation