Photosynthesis - Sheet1

Question 1

What is the chemical equation for photosynthesis in words?

Answer 1

water+carbon dioxide+light=oxygen and sugar

Question 2

What is the primary pigment found in cells that capture the sun’s energy?

Answer 2

chlorophyll

Question 3

What reaction occurs in thylakoids?

Answer 3

light-dependent

Question 4

Where does the calvin cycle occur?

Answer 4

stroma

Question 5

What two type of energies does the calvin cycle use?

Answer 5

ATP and NADPH

Question 6

What does the calvin cycle do?

Answer 6

converts carbon dioxide into sugars

Question 7

what molecule does light-dependent reactions split and what does it produce?

Answer 7

water and oxygen

Question 8

What does light-dependent reactions convert?

Answer 8

ADP and NADP+ into ATP and NADPH

Question 9

What three factors affect the rate of photosynthesis?

Answer 9

intensity of light, amount of water, temperature

Question 10

carbon fixation

Answer 10

converting carbon dioxide into sugars

Question 11

redox reaction

Answer 11

requires energy

Question 12

what type of reaction is carbon fixation?

Answer 12

redox reaction

Question 13

what happens in light reactions

Answer 13

one molecule of chlorophyll absorbs one photon and loses one electron

Question 14

light-dependent reactions

Answer 14

occur in the thylakoid membranes of the chloroplasts and use light energy to synthesize ATP and NADPH

Question 15

How are the cyclic cylce and non-cylic cycle different?

Answer 15

Cyclic generates only ATP, and no reduced NADP (NADPH) is created. Only in photo 1.

Question 16

cyclic cycle

Answer 16

returns back to photosystem one. Cycle.

Question 17

Non-cyclic cycle

Answer 17

the photons are captured in the light-harvesting antenna complexes of photosystem II by chlorophyll and other accessory pigments.

Question 18

photoinduced charge separation

Answer 18

an electron is transferred to the primary electron-acceptor molecule, pheophytin. Non-cyclic.

Question 19

The light reactions of photosynthesis supply the Calvin cycle with ____

Answer 19

ATP and NADPH

Question 20

What is the correct sequnece of the flow of electrons during photosynthesis?

Answer 20

H20-NADPH-Calvin cycle

Question 21

Cooperation of the two photosystems of the chloroplast is required for

Answer 21

reduction of NADP+

Question 22

In “mechanism” photophosphorylation is most similar to ___

Answer 22

oxidative phosphorylation in cellular respiration

Question 23

In what respects are the photosynthetic adaptations of the C4 plants and the CAM plants similar?

Answer 23

both make most of their sugar in the dark

Question 24

which process is most directly driven by light energy?

Answer 24

removal of electrons from membrane-bound chlorophyll molecules

Question 25

Chloroplast is to ____ as mitochondria is to cellular respiration

Answer 25

photosynthesis

Question 26

What color of light is least effective in driving photosynthesis?

Answer 26

green

Question 27

How would you expect the relative abundance of C3 versus C4 and CAM species to chnage in a geographic region whose climate becomes much hotter and drier?

Answer 27

C4 and CAM would replace many of the C3 species

Question 28

How does the ETC help produce ATP?

Answer 28

As the electrons fall down the chain to a lower energy level they produce ATP since the fall is exergonic.

Question 29

photosystems

Answer 29

how chlorophyll, proteins, and small organic molecules are organized

Question 30

reaction center

Answer 30

where the first light-driven chemical reaction of photosynthesis occurs

Question 31

mesophyll

Answer 31

where chloroplasts are mainly found in cells

Question 32

stomata

Answer 32

pores that allow oxygen to exit and carbon dioxide to enter

Question 33

Where do plants get their oxygen?

Answer 33

water

Question 34

photophosphorylation

Answer 34

adding a phosophate group to ADP to create ATP

Question 35

electromagnetic spectrum

Answer 35

the entire range of radiation

Question 36

visible light

Answer 36

wavelength 380-750nm

Question 37

photons

Answer 37

particles of light

Question 38

absorption spectrum

Answer 38

pigment's light absorption versus wavelength

Question 39

carotenoids

Answer 39

accessory pigments

Question 40

chlorophyll b

Answer 40

yellow-green

Question 41

chlorophyll a

Answer 41

blue-green

Question 42

rubisco

Answer 42

enzyme that catalyzes the first step of the Calvin cycle

Question 43

C3 plants

Answer 43

rice, wheat, and soybenas. Produce less food during droughts.

Question 44

photorespiration

Answer 44

When mitochondria nd peroxisomes break the two-carbon molecule down to CO2.

Question 45

Bundle-sheath cells

Answer 45

tightly packed sheaths around the veins of the leaf

Question 46

mesophyll cells

Answer 46

between the bundle sheath and the leaf surface

Question 47

PEP carboxylase

Answer 47

adds CO2 to PEP

Question 48

CAM

Answer 48

crassulacean acid metabolism