Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Biology > Chapter 7: Photosynthesis > Flashcards

Chapter 7: Photosynthesis Flashcards

(109 cards)

Start Studying
1
Q

what are two solutions of photorespiration- what plants

A

c4 plants and cam plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what does calvin cycle use

A

ATP and NADPH to synthesize sugars from CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

mesophyll and bundle shealth cells both has

A

chloroplast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what light is reflected in photosynthesis

A

green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

pigments

A

molecules that absorb and reflects different wavelength of sunlight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

stroma

A

semifluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what products does calvin cycle use from light rxns

A

atp and nadph

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

bundle sheath cell of c4 plants

A

calvin cycle occurs in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

photosystem 1 replaces its lost electrons how

A

by electrons from photosystem 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

reaction center

A

contains a pair of chlorophyll a molecules whose electron absorb light energy and becomes excited moving a higher energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how does c4 plants over photoresiration

A

by seperating carbon fixation from the calvin cycle using two different type of cells: mesophyll and bundle sheath cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

example of c4 plants

A

sugar cane and corn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

calvin cycle happens when for cam plants

A

during day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is similar to NADH and why?

A

NADPH, It carries 2e-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The reaction center pair of chloropyll a molecules of photosystem 1 absorb light with wavelength

A

700nm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

both photoautotrophs and heterotrophs have in common

A

carry out cellular respiration - make atp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

example of photosynthetic bacteria

A

cyanobacteria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

light harvesting complexes aka

A

antenna complex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what carries out only photosynthesis - what type of troph

A

photoautotroph

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

troph mean

A

food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

photosystem 2 uses high energy to make

A

atp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

where does photosynthesis occur in the chloroplast

A

thylakoid membrane and stroma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

overall calvin cycle uses ___ atp and ____ NADPH to make ____

A

18,12, to make one molecule of glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

example of photoautotrophs

A

plants, algae, cyanobacteria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
what is a direct product of calvin cycle
g3p, glyceraldehyde 3 phospate
26
where does cellular respiration occur
mitchondria and cytoplasm
27
what is the function of antenna complex
one of the pigments absorbs light energy and passes it to other pigment molecules until it reaches the reaction center
28
photorespiration requires what
sunlight
29
what are heterotrophs
use food made by someone else
30
vein
transport water and sugar to plant
31
what gas goes in the stoma
co2
32
carbon fixation happens when for cam plants
at night
33
photo mean
light
34
granum
stack of thylakoids
35
light reactions
occurs during the day
36
what type of transport with atp synthase and what gradient
passive transport (facillitate difussion), down
37
what is released when electron is in the excited state
heat and photon
38
auto mean
self
39
with chlorophyll molecule, what gets it excited
photon of light
40
what doesn't require sunglight, what reaction
dark reaction or calvin cycle
41
what happens when electrons move from one molecule to another
lose energy
42
what is not a direct product
glucose
43
what kind of process is photorespiration
wasteful process
44
where does calvin cycle occur
in stroma
45
chlorophyll a and b reflects what color
green
46
hetero mean
other
47
concentration of hydrogen in stroma
low on outside
48
step 2 (reduction) calvin cycle (endergonic or exergonic)
12 pga + 12 atp + 12 NADPH ------> 12g3p + 12 NADP+ + 12 ADP + 12 Pi, endergonic
49
what light do we see
reflected light
50
what gas comes out the stoma
o2
51
what happens when leaves don't have anymore chlorophyll
they die and fall off
52
what is the last step with photosystems
high energy electrons are then donated to primary electron acceptor
53
why hot, dry weather is a problem for some plants
in order to reduce water loss, plants keep stomata closed. they prevent co2 from entering and oxygen from exiting the leaf
54
what type of reaction is photosynthesis
endergonic rx
55
example of photosynthetic protist
algae
56
bundle sheath cells
protects leaf vein and are involed in photosynthesis in c4 plants
57
carontenoid reflects what color
red, yelllow, and orange pigments
58
stoma/stomata
responsible for gas exchange
59
step 1 (carbon fixation) of calvin cycle
6 co2 combine with rubp to produdce 12 3-pga; this requires rubisco
60
in fall, what happenes to leaves
leaves has more cartenoids than chlorophyll
61
in spring, what happens to leaves
leaves has more chlorophyll than cartenoids
62
what reaction requires sunlight
light rxn
63
calvin cycle aka...
dark reaction
64
what happens when the concentration of oxygen is too high, what is the name of this condition
rubisco binds to oxygen instead of co2, photorespiration
65
example of heterotrophs
animal, fungi, many protist, and bacteria
66
epidermis
plant skin to protect
67
where does light reactions occur
in thylakoid membrane
68
calvin cycle
doesn't require sunglight, only need products from light reactions
69
in light reactions of photosynthesis electrons always move
from photosystem 2 to photosystem 1
70
step 3 (release of g3p) calvin cycle
2 g3p leave the calvin cycle and are used to make glucose and other sugars
71
cuticle
h20 loss
72
what is reduced in photosynthesis and to what?
co2, glucose
73
light reaction is what type of reaction
exergonic
74
photorespiration uses what
atp
75
ground state
low energy state
76
photosynthesis is what type of reaction
endergonic
77
what are photoautotrophs
make own food using sunlight
78
mesophyll cell of c4 plants
this is where carbon fixation occurs in
79
hydrogen move through atp synthase from _____ to _____
thylakoid space back to the stroma
80
hydrogen pump uses energy from ______ to move hydrgoen from ______ to the ______
electrons, stroma, thylakoid space
81
The reaction center pair of chloropyll a molecules of photosystem 2 absorb light with wavelength
680 nm
82
photosystem
cluster of proteins, chlorophylls and caroteinoids
83
what pigments are needed for photosynthesis
chlorophylls and carotenoids
84
mesophyll
cells that contain chloroplast
85
atp synthase
makes atp from adp and Pi
86
how many types of photosystems
two
87
what is the final electron accepter in light reactions
NADP+
88
what is oxidized in photosynthesis and to what?
water, o2
89
cam plants overcome photorespiration by
performing carbon fixation and calvin cycle in the mesophyll cells but at different times of day
90
light harvesting complexes
consist of protiens and pigments
91
calvin cycle must turn how many times to make _____ to make _____
6 times, 6 carbons, glucose
92
photosystem 1 uses high energy electrons to make
NADPH
93
step 4 ( regeneration of RuBP) calvin cycle (endergonic or exergonic)
the remaining 10 g3p react with 6 atp to produce 6 ruBP and 6 ADP, endergonic
94
example of c4 plants
corn and sugar cane
95
where does photosynthesis occur
in chloroplast
96
how do plants absorb energy from the sun
pigments
97
what does light reactions make
ATP, NADPH, O2
98
what is the equation for photosynthesis
6c02 + 6h2o with light energy ------> glucose + 602
99
photon of light
energy
100
calvin cycle is what type of reaction
endergonic
101
photorespiration uses what to produce _____ and _____
oxygen, co2 and water
102
photosystem 2 replaces is lost electrons by
splitting or oxidizing water
103
guard cells
open and closes the stoma
104
hydrogen pumps - what type of concentraton gradient and what transport
up, active transport
105
cellular respiration is what type of rxn
exergonic
106
concentration of hydrogen in thylakoid space
greater inside
107
example of cam plant
pineapple
108
products or reactants of photosynthesis has more energy
products
109
excited state
high energy level because they gain energy from the sun

Biology (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions