4.2 Kahoot - exam Flashcards

1
Q

What organelle does photosynthesis take place in?

A

chloroplast

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2
Q

what does mesophyll tissue do in plants

A

photosynthesis

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3
Q

what is the role of the stomata

A

to allow gases into and out of the leaves

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4
Q

these open and close the stomata

A

guard cells

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5
Q

together, stomata and guard cells regulate

A

gas exchange and water loss

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6
Q

in c3 plants, when are the stomata open

A

usually during the day

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7
Q

where do protons accumulate during photosynthesis

A

thylakoid space

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8
Q

e’ in plant pigments gain energy by

A

the absorption of light energy

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9
Q

a leaf looks green becayse its chlorophyll molecules ___________.

A

reflect green light and absorb the other frequencies

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10
Q

as the absorbance of chlorophyll a increases, the rate of photosynthesis

A

increases

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11
Q

photosystem

A

a cluster of pigments and proteins that capture light energy

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12
Q

antenna complexes

A

cluster of pigments/proteins that capture light

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13
Q

what is the function of the reaction center

A

to pass excited e’ out of the photosystem

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14
Q

what provides the e’ in the light-dependent reactions with the energy to move from the reaction center to the carrier

A

light

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15
Q

where do the light-dependent reactions occur

A

thylakoid membrane

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16
Q

photosystem I has which reaction centre?

A

P700

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17
Q

photosystem II has which reaction centre

A

P680

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18
Q

what is the last protein in the etc of photosynthesis?

A

NADP+ reductase

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19
Q

what is the function of water in photosynthesis

A

supply e’ to photosystem II

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20
Q

how is oxygen made in photosynthesis

A

its made when water is split apart

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21
Q

what protein creates a high concentration of H+ during the light dependent reaction?

A

b6-f complex

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22
Q

the end product of the light-dependent reactions is glucose

A

false

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23
Q

in what part of the cell do the light-dependent reactions create a high concentration of H+ ions?

A

thylakoid space

24
Q

what happens when a reaction centre is excited

A

e’ are passed to an e’ acceptor

25
what is the final e' acceptor in the etc of photosynthesis
NADP+
26
what is photophosphorylation
synthesis of ATP using photon energy
27
this enzyme is responsible for photophosphorylation
ATP synthase
28
cyclic photophosphorylation accomplishes what
increases H+ pumping to the thylakoid space
29
what is the process called that increases ATP production in photosynthesis
cyclic phosphorylation
30
where do the light-independent reactions occur
stroma
31
the passing of one electron pair along the etc in photosynthesis creates how many molecules
1 ATP and 1 NADPH
32
which photosystem is involved in cyclic phosphorylation
photosystem I
33
describe the path of e' in cyclic phosphorylation
P700 --> e- acceptor --> e- carrier --> b6-f complex -> e- carrier --> P700
34
what supplies the e' in the light dependent reactions
water
35
what is the light-independent phase also known as
the calvin cycle
36
what is the starting material of the calvin cycle
RuBP
37
in the calvin cycle, what is the 3 carbon product that exits the cycle
G3P
38
how many CO2 must enter the calvin cycle to produce a single glucose
6
39
what is the 1st phase of calvin cycle
carbon fixation
40
what enzyme is responsible for "fixing" carbon during photosynthesis
rubisco
41
G3P rearranges to form what molecule in the calvin cycle
RuBP
42
what is the first stable organic compound after carbon is fixed in the calvin cycle
3-phosphoglycerate
43
if 3 CO2 enter the calvin cycle, how many 3-phosphoglycerate molecules are made?
6
44
what occurs in the 2nd phase of calvin cycle
reduction reactions
45
for 3 CO2, how many ATP and NADPH are used during the reduction step of calvin's cycle
6 and 6
46
what molecule is made during the reduction step of calvin's cycle
G3P
47
the G3P that leaves the calvin cycle must always form glucose
false
48
what is required to regenerate RuBP in phase 3 of calvin cycle
5 G3P and 3 ATP
49
to make 1 glucose molecule takes...
6 CO2, 18 ATP, 12 NADPH
50
photorespiration
process of fixing O2 instead of CO2 by rubisco
51
when does rubisco to bind oxygen sometimes?
when oxygen levels in a leaf are high
52
C4 and CAM plants use a different cycle than calvin's to create glucose
false
53
why have some plants adapted to use C4 or CAM photosynthesis
to protect against water loss in dry environments
54
how do CAM and C4 plants store CO2 for later use in calvin's cycle
convert it to a 4-C molecule
55
in what type of cell do C4 plants store CO2
mesophyll cell
56
in what type of cell do C4 plants perform most of Calvin's cycle
bundle-sheath cell
57
how are CAM plants different than C3 plants?
CAM plants open their stomata at night