Unit 3 Quiz 2

Question 1

Ancestral ______ were the first to evolve the use of photosynthesis on specialized internal _____

Answer 1

Prokaryotes, membranes

Question 2

The evolution of photosynthesis introduced _____ into early Earth’s atmosphere

Answer 2

Oxygen

Question 3

Eukaryotic cells capable of performing photosynthesis evolved as a result of endosymbiosis between a _______ and _____ prokaryote

Answer 3

Photosynthetic, non-photosynthetic

Question 4

The early atmosphere of Earth had little or no _____

Answer 4

Oxygen gas

Question 5

Define Fermentation

Answer 5

Ancient biochemical pathway that does not require oxygen gas

Question 6

Anaerobic cellular respiration makes use of final electron acceptors other than _____

Answer 6

Oxygen gas

Question 7

All of the oxygen in Earths atmosphere results from _______ by photosynthetic bacteria, algae, and plants

Answer 7

Photosynthesis

Question 8

The ability as an electron donor in photosynthesis first evolved in _____ 2.4 billion years ago

Answer 8

Cyanobacteria

Question 9

What are the three separate parts that work together to generate NADPH and ATP in light dependent reactions?

Answer 9

Photolysis, electron transport chain, chemiosmosis

Question 10

Electron carries for photosynthesis include _____ and _____

Answer 10

NADP+, NADPH

Question 11

Antenna chlorophyll molecules transfer absorbed light energy to the _____

Answer 11

Reaction center (also chlorophyll)

Question 12

Reaction centers transfer electrons to an _____ thus initiating the photosynthetic electron transport chain

Answer 12

Electron acceptor(protein)

Question 13

_____ is the electron donor In the light dependent reactions and _____ is the final electron acceptor

Answer 13

water, NADP+

Question 14

The photosynthetic electrons transports chain consists of what 2 photosystems in a series?

Answer 14

Photosystem II and Photosystem I

Question 15

Photosystem II pulls electrons from _____, resulting in the production of oxygen.

Answer 15

Water

Question 16

Photosystem I reduces NADP+, producing ____

Answer 16

NADPH

Question 17

The movement through the electron transport chain is ______ with the transfer of protons from the stroma to the thylakoid space in the light dependent reactions

Answer 17

Coupled

Question 18

The buildup of protons in the thylakoid space drives the production of ATP by _____

Answer 18

ATP Synthase

Question 19

Define photolysis

Answer 19

Water is struck by a photon of light and broken into O_2, H+ ions and electrons.

Question 20

In the light depends reactions, energy from the moving electrons through the electron transport chain is used to actively transport _____ from the ____ to the ____ creating and maintaining a _____ concentration across the thylakoid membrane

Answer 20

H+, stroma, lumen, H+

Question 21

By the time the electron has gone through the electron transport chain from Photosystem II to Photosystem I, it has ____ energy

Answer 21

Lost

Question 22

An electron is hit by a ____ of ____ and excites it again in Photosystem I (after traveling through the electron transport chain from Photosystem II). This electron is captured by _____ and a _____ to reduce NADP+ to NADPH

Answer 22

Photon of light , NADP+, H+ ion

Question 23

NADPH is transported to the ____ and used in the ________ ______ reactions.

Answer 23

Stroma, light independent

Question 24

Define Chemiosmosis

Answer 24

When H+ ions diffuse through a channel in ATP synthase.

Question 25

The energy of diffusion of chemiosmosis allows ATP synthase to phosphorylate to ____ to make ____

Answer 25

ADP, ATP

Question 26

In the ATP synthase Hydrogen ions move from ___ to ____ concentrations

Answer 26

High, low

Question 27

Define photophosphorylation

Answer 27

The process by which plants use light energy to convert ADP to ATP

Question 28

The Calvin cycle occurs in the ____ of the chloroplast

Answer 28

Stroma

Question 29

The inputs of the Calvin cycle include ___ ___ and _____

Answer 29

CO_2, NADPH, and ATP

Question 30

The outputs of the Calvin cycle are ____ ___ and _____

Answer 30

Glucose, NADP+, ADP

Question 31

in the Calvin cycle _____ and _____ are oxidized, and the energy released from the oxidation is used by the enzyme ______ to reduce and fix inorganic carbon from CO_2 into an organic form in ____. This regenerates ______ and ____, which are recycled back to the light _____ reactions

Answer 31

NADPH, ATP, RuBisCo, glucose, NADP+, ADP, dependent

Question 32

The Calvin cycle must occur ____ before one glucose molecule is produced

Answer 32

Twice

Question 33

Stomata ____ during hot portions of the day to conserve water, however this means ____ can’t enter the plant and ____ levels rise

Answer 33

Close, CO_2, O_2

Question 34

When the stomata is open, water _____ of the stomata and CO_2 ____ the stomata

Answer 34

Evaporates out, enters

Question 35

Photorespiration occurs when ____ is taken up by RuBisCo instead of ____. Which results in the plant losing ____ instead of gaining (which is bad for the plant)

Answer 35

O_2, CO_2, CO_2

Question 36

Photorespiration occurs when there is low ____ concentrations

Answer 36

CO_2