Photoynthesis Test

Question 1

autotroph

Answer 1

PRODUCE OWN FOOD, sunlight or chemical bond, photosynthesis, chemosynthesis

Question 2

Heterotroph

Answer 2

Energy from food

Question 3

autotroph vs. heterotroph

Answer 3

Produce food vs, get energy from food

Question 4

photosynthesis

Answer 4

Autotrophs, base of terrestrial, aquatic food webs, - included plants, algae, plankton, coral….except for chemiosynthetic organisms

Question 5

light reactions

Answer 5

water splitting, photosystem 2, photosystem 1, ATP synthesis …. Light energy results in chemical energy span the thylakoid membrane

Question 6

water splitting

Answer 6

?

Question 7

photosystem 2

Answer 7

Photosystems are pigments embedded in proteins in the thlyakoid membrane, in system two, energy is passed to chlorphyll a and is excited then leaves chlorophyll a to the primary electron receptor then donates electrons to electon transport chain
as electrons move they lose energy

Question 8

photosystem 1

Answer 8

Only difference from ps2
Electrons + protons + nadp
-> nadph

Question 9

atp synthesis

Answer 9

?

Question 10

calvin cycle

Answer 10

?

Question 11

alternative pathways

Answer 11

c4 plants, CAM plants

Question 12

C4 plants

Answer 12

Plants in hot dry climates, fix c through the c4 pathway, stomata partially closed during hittest part of the day, prevent water loss, enzyme fix CO2 into 4c compounds, calvin cycle ensues even when co2 levelis low, o2 level high—-converts CO2 into C4. Keeps stomata partially closed to keep water in.

Question 13

CAM plants

Answer 13

SOME plants in hot dry climates c fixation at night, minimize water loss; used by plants in hot climates. Process done at night.

Question 14

environmental factors

Answer 14

temp, light, CO2

Question 15

Organelles involved in photosynthesis and cellular respiration

Answer 15

Chloroplast, mitochondria

Question 16

Photosynthesis

Answer 16

Chlorplast, glucose, oxygen

Question 17

Cellular respiration

Answer 17

Mitochondria, atp, water, co2

Question 18

Photsynthesis is a how many stage process

Answer 18

Light reactions and calvin cycle

Question 19

Light reactions

Answer 19

Light energy-> chemical energy atp nadph

occur in thylakoid membrane

Question 20

Calvin cycle

Answer 20

Chemical energy atp nadph -> organic compounds

occurs in stroma

Question 21

Equation of photosynthesis

Answer 21

6co2+ 6h2o _light energy -> c6h12o6 + 6o2

Question 22

Capturing light energy

Answer 22

Chloroplast light reactions
Plants, bacteria, algae
Pigments (chlorophyll a & b)
White light - all colors visible spectrum
Pigments either absorb or reflect

Question 23

Chloroplast pigments are where

Answer 23

Locate in membranes of thylakoid

Question 24

Examples of chloroplast pigments

Answer 24

Chlorophylls and carotenoids; pigments in proteins are chlorophyll

Question 25

Replacing electrons in ps2

Answer 25

Ps2 splitting of water molecules, oxygen diffuses out, h+ remain, electron to etc

Question 26

Replacing electrons in ps1

Answer 26

Electrons from ps2 to ps1

Question 27

Light reactions

Answer 27

H2o split, ps2, ps1, atp synthesis (adp plus phosphate)

Question 28

Making atp

Answer 28

Chemiosmosis, movement of protons through Atp, synthase into the stroma -> energy -> used yo produce atp

Question 29

Calvin cycle

Answer 29

Light reactions made atp and nadph, drive 2nd stage of photsynthesis, co2 INCORPORATED into organic compounds in STROMA of chloroplast, series of enzyme assisted chemical reactions, produces a three carbon sugar, converted to 5c sugar (rubp) keep cycle operating, organic compound acts as energy storage

Question 30

Factors affecting photosynthesis

Answer 30

Light, co2, h2o, temperature - as temp increases the rate of photosynthesis increases to a point and then decreases

Question 31

chemosynthesis

Answer 31

Most life on Earth is dependent upon photosynthesis, the process by which plants make energy from sunlight. However, at HYDROTHERMAL VENTS in the deep ocean a unique ecosystem has evolved in the absense of sunlight, and its source of energy is completely different: chemosynthesis.

Question 32

OIL RIG

Answer 32

OXIDATION is loss, REDUCTION IS GAIN

Question 33

biological reaction series

Answer 33

aka biological pathways (cellular respiration and photosynthesis)

Question 34

as light increases, the rate of photosynthesis

Answer 34

increases and then holds steady

Question 35

as carbon dioxide increases, the rate of potosynthesis

Answer 35

increases and then hold steady

Question 36

as temp increases, the rate of photosynthesis

Answer 36

increases to a point and then decreases

Question 37

chloroplast

Answer 37

membrane, stroma, thylakoid, lumen, grana know all parts

Question 38

photosynthesis

Answer 38

light reactions and calvin cycle

Question 39

light reactions

Answer 39

IN sunlight
OUT PS2 light excites electrons
OUT PS1 electrons make NADPH
OUT ATP Synthases ATO

Question 40

4 main processes in light reaction cycle

Answer 40

PSI, PS2, ATP Synthase and water splitting

Question 41

Calvin Cycle

Answer 41

IN 3 6carbon compounds (NADPH + ATP)
OUT 3 6carbon compounds (ADP and NADP+)
one makes a sugar and the others go back into the cycle when fused with CO2

Question 42

Photosystem 2

Answer 42

light enters the pigments and excites electrons
that move into the primary electron receptor
they continue into the electron transfer
and protons go out the thylakoid membrane

Question 43

Photosystem 1

Answer 43

takes electrons from PSII
adds more electrons get excited
in pigments they charge the NADP+
until it becomes NADPH

Question 44

ATP synthase

Answer 44

in ATP synthesis, the energy from the electrons is used to combine ADP and P+ to create ATP

Question 45

water splitting

Answer 45

uses light energy to break up H2O.
Oxygen diffuses OUT
H is stored for energy
and is moved out into the lower concentration of H in thylakoid space