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Week two Koslow Botany
Week two Koslow Botany
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cell walls and basic photosynthesis
Flashcards
49 cards
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Practice quiz
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Questions
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Answers
1
What makes up the middle lamella that "glues" neighboring plant cells together?
pectin
hemicellulose
cellulose
lignin
2
Which species is used as a model system for plant biology?
Arabidopsis thaliana
Pinus strobus
Drosophila melanogaster
Liriodendron tulipifera
3
What are the reactants for photosynthesis?
Carbon dioxide and water
oxygen and glucose
light and oxygen
4
Where in the cell does (cellular) respiration occur?
Mitochondria
Vacuole
Chloroplast
Nucleus
5
What colour is the chloroplasts' stroma?
Blue
Yellow
Nothing
Green
6
What reaction takes place in the stroma of the chloroplast?
Kreb's Cycle
Synthesis (Calvin-Benson Cycle)
Photo (Light) Reaction
Citric Acid Cycle
7
Which of the following is NOT a function of a plant cell wall?
defense
assist in water movement
define shape of the cell
perform photosynthesis
8
The step of photosynthesis that produces ATP and NADPH
Synthesis reaction
Light Independent reaction
Photo reaction
Glycolysis
9
What is produced by the photo reactions of photosynthesis?
Water, sugar and oxygen
NADPH, ATP, and Oxygen
Sugar, NADP+, and ADP + Pi
ATP, carbon dioxide, NADPH
10
Which component of a plant cell looks like fiberglass when viewed under electron microscopy?
plastid
nucleus
vacuole
cell wall
11
What happens FIRST in Photosystem II?
Photons are absorbed and excite electrons.
Molecular Oxygen is released
Excited electrons go to an electron acceptor.
Photolysis (splitting of water) occurs
12
What happens to the electron that leaves Photosystem II?
It is added to NADP+
It passes down the ETC to Photosystem I
It is passed onto the Calvin Cycle
It gains energy
13
Which is not a function of the vacuole?
exert turgor pressure (support, cell expansion)
store compounds (salts, tannins, sugars)
photosynthesis
recycle organelles
14
How is energy moved from one pigment to another in the antenna complex?
resonance transfer
conduction
diffusion
absorption
15
What is the name of the pigment that absorbs sunlight to power photosynthesis?
chloroplasts
chlorophyll
anthocyanin
carotenoid
16
The stroma is the region outside of the:
thylakoids
plant cells
all of the above
chloroplasts
17
What is the main component of the primary cell wall?
hemicellulose
pectin
cellulose
lignin
18
What are plasmodesmata?
Channels within the cell walls
Immature cells
Sugar transporters
Channels between cells
19
Oxygen is used in lactic acid and alcoholic fermentation
true
false
20
After water splits, electrons get carried down _______ to produce ATP and NADPH.
Potassium channels
Sodium channels
Stroma
Electron transport chain
21
Which molecule enters the Synthesis Reactions (Calvin-Benson Cycle)?
O2
glucose
carbon dioxide
water
22
In yeast and plants, anaerobic respiration produces ethanol and lactic acid.
True
False
23
Plasmodesmata allow the flow of ions between two plant cells.
True
False
24
Replacement electrons for the reaction center of photosystem II are derived from
CO2.
NADP+.
NADPH.
H2O.
25
The symplast is:
The network of endoplasmic reticulum through the plant
The network of cell walls and spaces in the plant
A type of plastid
The contiguous region of cytoplasm in the plant
26
What is the lumen?
Light-absorbing colored molecule
Space inside the thylakoid membranes
Fluid-filled space outside the grana
The major electron carrier
27
Do photosynthesis and respiration both occur at night?
No, neither can
Yes, they both can
No, only respiration can
No, only photosynthesis can
28
Which statement is NOT true about ALL plastids?
They have their own DNA & it's circular
They can change into each other
They all come from pre-existing plastids via binary fission
They all contain color pigments
29
Which carrier provides high-energy electrons needed to make C-H bonds during the Synthesis Reactions?
ATP
ADP
NADPH
NAD+
30
(BLANK) contain Photosystem I and Photosystem II
Cristae of mitochondria
Stroma
Photons
Thylakoids
31
Glycolysis requires oxygen
True
False
32
According to the serial endosymbiotic theory, chloroplasts evolved from:
protists
fungi
bacteria
portions of the plasma membrane
33
All of the following are true about the thylakoid membrane EXCEPT that it
is the site of the Synthesis Reactions (Calvin cycle)
is composed of lipids and proteins.
is the site of chorophyll molecules
contains photosystems I and II
34
Where in the cell does (cellular) respiration occur?
Vacuole
Nucleus
Mitochondria
Chloroplast
35
Carbon dioxide diffuses into leaves through stomata during the day because_______________?
that is what has to happen for photosynthesis to occur.
the plant needs the carbon dioxide
the concentration of CO2 is lower in the leaf than in the air.
the concentration of CO2 is higher in the leaf than the air.
36
Synthesis (Light independent) reactions take place in the thylakoid membrane
False
True
37
What is created as a result of Photosystem I?
NADPH is created
H2O is created
CO2 is created
NADP is created
38
Rubisco is the enzyme that
Reduces PGA to G3P
Reduces NADP+ to NADPH
Fixes CO2 with RuBP
Regenerates RuBP from G3P
39
What directly provides the energy for ATP synthase to produce ATP in the thylakoid membrane?
energized electrons
photons of sunlight
NADPH
the proton concentration gradient
40
What are the stages of photosynthesis?
Sun and tree cycle
The Calvin Cycle
Light-Dependent Reactions
Photo Reactions & the Synthesis Reactions
41
During the day, the concentration of H+ ions is ______ inside of the thylakoid
Lower
Higher
42
Where in a plant cell would one find pectin?
cell wall
chloroplast
amyloplast
nucleus
43
Which products of the photo (light) reactions are used during the Calvin Cycle?
ATP and water
water and carbon dioxide
ATP and NADPH
electrons and carbon dioxide
44
From where does photosystem II get an electron?
sunlight
carbon dioxide
ATP
water molecule
45
Sunlight energizes _______________ in photosystems I and II.
protons
electrons
oxygen
atoms
46
What is the function of the antenna molecules?
Accept electrons from the Oxygen Evolving Complex
Concentration of hydrogen ions into the inner thylakoid space
Channel light energy to the reaction center of the photosystem
Reflect green light from the photosystem
47
How can protons leave the thylakoid when they become concentrated during the Photo (light) reactions?
By reacting with CO2
They get excited and leave
Through an ATP synthase molecule
48
Glycolysis is the?
Pathway by which glucose is degraded into 3-carbon units.
Oxidation of pyruvate and acetyl-CoA to CO2 and H2O.
Production of glucose from non-carbohydrate intermediates.
49
Cellulose is the most important carbohydrate for energy storage in plants.
True
False
