Photosynthesis

Question 1

Photosynthesis

Answer 1

Plant makes its own food (sugar)

Question 2

Plants use ____ to make sugar

Answer 2

Light energy (sunlight)

Question 3

Inputs of photosynthesis

Answer 3

CO2
H2O
Photon Energy

Question 4

Outputs of photosynthesis

Answer 4

O2
Storable chemical energy (sugars, C-H bonds)

Question 5

Light dependent reactions

Answer 5

Uses captured light energy to split H2O, which is used to synthesize ATP and NADPH

Question 6

Light Independent reactions

Answer 6

Calvin cycle, carbon fixation using energy from light dependent reactions

Question 7

Chloroplast

Answer 7

Photosynthetic organelle found within the leaf mesophyll

Question 8

Any ____ part of a plant can photosynthesize

Answer 8

Green

Question 9

How are chloroplasts organized?

Answer 9

-Double membrane (completely smooth)

-Thylakoid (disc shaped membranes)

-

Question 10

What are imbedded inside thylakoids?

Answer 10

Photosynthetic pigments and e-transport chain(s)

Question 11

Granum

Answer 11

Thylakoid stack

Question 12

Thylakoid space

Answer 12

Fluid filled space between thylakoids

Question 13

Stroma

Answer 13

Liquid-like interior
Enzymes used to convert CO2 into sugar

Question 14

Chlorophyll a

Answer 14

Green in color

Question 15

Accessory pigments

Answer 15

Chlorophyll b and carotenoids

Question 16

Longer wavelengths mean

Answer 16

Lower energy

Question 17

Shorter wavelengths mean

Answer 17

Higher energy

Question 18

Different pigments absorb….

Answer 18

Different wavelengths of light

Question 19

Most plants do not absorb green wavelengths because…

Answer 19

Most plants are REFLECTING green light (they are green)

Question 20

What does a chlorophyll molecule look like?

Answer 20

Porphyrin ring with a hydrocarbon tail

Question 21

What happens when light is absorbed?

Answer 21

Electrons within photosynthetic pigments enter an excited state

Question 22

Resonance

Answer 22

AYO LISTEN UP

-Energy in an electron is transferred to a nearby pigment

Question 23

Reduction/Oxidation

Answer 23

An electron is transferred to a new compound

Question 24

Fluorescence

Answer 24

An electron drops back down to lower energy levels; heat and fluorescence are emitted

Question 25

What does PEA stand for?

Answer 25

Primary electron acceptor

Question 26

What substance flows across a membrane that generates energy for ATP synthesis?

Answer 26

Hydrogen

Question 27

A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are NOT being absorbed by this pigment?

Answer 27

Red & Yellow

Question 28

Chloroplasts, like mitochondria, _________.

Answer 28

utilize an electron transport chain and chemiosmosis

Question 29

Oxidation of water and reduction of NADP+ occurs during

Answer 29

Photosynthesis

Question 30

Electrons flow along an electron transport chain during

Answer 30

Photosynthesis and cellular respiration

Question 31

Oxidative phosphorylation and the generation of proton gradients occur during

Answer 31

Photosynthesis and cellular respiration

Question 32

Oxygen is reduced during

Answer 32

Cellular respiration

Question 33

What are the final products (or “outputs”) of the light-dependent reactions of photosynthesis?

Answer 33

O2 NADPH ATP

Question 34

What are the molecules that go into (are the “inputs” for) the light-dependent reactions of photosynthesis?

Answer 34

Light NADP+ ADP+P Water

Question 35

What are the molecules that go into (are the “inputs” for) the Calvin cycle?

Answer 35

NADPH ATP CO2

Question 36

What are the final products (or “outputs”) of the Calvin cycle?

Answer 36

NADP+ Sugar ADP+P Water

Question 37

Carbon fixation involves the addition of carbon dioxide to

Answer 37

RuBP using RuBisCo

Question 38

After 3-PGA is phosphorylated, it is reduced by

Answer 38

NADPH

Question 39

How many carbon dioxide molecules must be added to RuBP to make a single molecule of glucose?

Answer 39

six

Question 40

In the Calvin cycle, how many ATP molecules are required to regenerate RuBP from five G3P molecules?

Answer 40

three

Question 41

What are the three main steps of the calvin cycle?

Answer 41

carbon fixation reverse glycolysis reformation of rubp

Question 42

what is the calvin cycle also known as?

Answer 42

light-independent reactions

Question 43

reverse glycolysis forms

Answer 43

energy rich CH bonds

Question 44

how many G3P are needed to make one glucose molecule?

Answer 44

2

Question 45

In an experiment, the thylakoids are removed from the chloroplasts of a plant cell and kept in a culture medium. The culture is exposed to sunlight, CO2, and water, but no sugars are formed. What is the most likely explanation for this result?

Answer 45

The area within a plant cell where sugar is created is no longer present