Test
Chapter 9
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Preguntas del test (62)
1sunlight consists of packets of energy called [blank_start]__[blank_end]
- A__ photons
2photons with __ wavelengths have more energy
- Ashorter
- Blonger
- Cwider
- Dthiner
3photosynthesis and human vision only use what kind of light?
- ATV and radio waves
- Bmicrowaves
- Cinfrared
- Dvisible
- Ex-rays
- Fgamma rays
4when certain types of molecules absorb photons, [blank_start]__[blank_end] becomes energized
- A__ electrons
5where are pigments embedded?
- Astroma
- Bthylakoid lumen
- Cthylakoid membrane
- Dinner membrane
- Eouter membrane
6chlorophylls a and b absorb [blank_start]___[blank_end]
carotenoids absorb [blank_start]__[blank_end]- Ablue and red light
- Bblue and blue-green light
7what are the two part structure of chlorophylls
- Aporphyrin ring
- Bcarotenoids
- Chydrocarbon tail
- Dchlorophyll
8what is true about photosynthesis
- Ait is anabolic and endergonic
- Bit is exergonic and catabolic
- CC6H12O6 + 6O2 -> 6CO2 + 6H2O + ATP
- D6CO2 + 6H2O -> C6H12O6 + 6O2
9light energy is converted to chemical energy in photosynthesis
- AVerdadero
- BFalso
10hydrogens from H2O transferred to [blank_start]__[blank_end] (reduced) to form organic molecules
- ACO2
11oxygen atoms from water oxidized, forming O2
- AVerdadero
- BFalso
12what is true about the two phases of photosynthesis
- Alight dependent reactions (thylakoid)
- Blight independent reaction (stroma)
- Ccarbon fixation reactions (stroma)
- Duses light energy to generate ATP and NADPH while the other uses ATP and NADPH to form organic molecules
13[blank_start]___[blank_end] : conversion of carbon in CO2(inorganic) to organic molecules
- Acarbon fixation
14in thylakoids the pigment is located in [blank_start]__[blank_end]
- A__ photosystems
15photosystems:
- Ahave reaction center that includes two chlorophyll a molecules
- Bphotosystem 1 (P700)
- Cphotosystem 1 (P680)
- Dphotosystem 2 (P700)
- Ephotosystem 2 (P680)
16[blank_start]___[blank_end] pass energy to chlorophyll a
- Achlorophyll b and carotenoids
17chlorophyll a is a ___ that transfers electrons to electron carrier molecules when excited by light
- Asecondary photosynthetic pigment
- Bprimary photosynthetic pigment
- Ccarotenoid
18electrons flow from P700 reaction center through series of electron carriers to [blank_start]___[blank_end]
- Aferredoxin
19in photosynthesis what is the final electron acceptor[blank_start]?[blank_end]
- ANADP+
20In photosynthesis, which molecule plays the same role that oxygen does in aerobic respiration?
- ANADH
- BG3P
- CNADP+
- DH20
- EATP
21[blank_start]__[blank_end] : of H2O yields two electrons to replace those lost by P680
- Aphotolysis
22free energy released by electron transport used to
- Apump H+ across thylakoid membrane
- Bstroma -> thylakoid lumen
- Cthylakoid lumen -> stroma
- Dprotons diffuse down concentration gradient
- Eprotons diffuse up concentration gradient
23what is the cytochrome complex ?
- Atransports electron from photosystem 2 to photosystem 1
- Bfunctions as a proton pump
24the electrons for the electron transport chain of photosynthesis ultimately come from:
- Aphotons
- Bco2
- CNADPH
- DH20
- E02
25the Calvin cycle is also know as the [blank_start]__[blank_end]
- AC3 pathway
26[blank_start]__[blank_end] is the carbon fixation enzyme
- Arubisco
27most of the G3P produced during the Calvin cycle is used to:
- Aregenerate ATP
- Bproduce glucose
- Cfix carbon
- Dregenerate RuBP
28the fluid-filled space within a thylakoid is the:
- Agrana
- Bstroma
- Clumen
- Dintermembrane space
29which of these happens first during photosynthesis?
- ACO2 consumption
- BO2 generation
- CNADPH breakdown
- Dsugar generation
30in the light-dependent reactions, protons stored in the thylakoid lumen flow through:
- AATP synthase
- Bphotosystem 2
- Cphotosystem 1
- Dchlorophyll
31Some of the requirements for the light-dependent reactions of photosynthesis include:
- ACarbohydrates
- BOxygen
- CPhotons
- DNADP+
- EWater
32The carbon fixation reactions of photosynthesis:
- ARequires NADPH
- BTakes place in the stroma
- CRequire ATP
- DGenerate oxygen
- EGenerate PGA
33Thylakoids:
- AComprise grana
- BPossess the basic fluid mosaic membrane structure
- CAre surrounded by the stroma
- DAre continuous with the plasma membrane
- ECarry out the carbon fixation reactions
34Chlorophyll
- ADissolves in water
- BContains magnesium in a porphyria ring
- CIs green because it absorbs green portions of the visible light spectrum
- DIs the only pigment found in most plants
- EIs found mostly in the stroma
35[blank_start]__[blank_end] has a magnesium atom at its center is the part of a chlorophyll molecule that absorbs light energy
- APorphyrin ring
36C4 fixation takes place in bundle sheath cells
- AVerdadero
- BFalso
37The reactions of photo system 2:
- AProduce O2
- BProduce H2O
- CAssist in producing a concentration gradient across the thylakoid membrane
- DInclude splitting water
38In plant cells that have chloroplasts, chlorophyll is found in the:
- AThylakoid membranes
- BInter membrane spaces
- CStroma
- DCristae
- ELumen
39An __ spectrum measures wavelengths of light absorbed by a pigment.
- AActivity
- BAction
- CAbsorption
40In the ground state, an atom:
- AHas filled its outer orbital of electrons
- BHas all of its electrons at their lowest energy level
- CHas electrons that are fluorescing as they lose energy
- DIs unable to absorb energy
41Carotenoids:
- AAbsorb different wavelengths than chlorophyll
- BAre nonpolar
- CAre polar
- DExpand the spectrum of light for photosynthesis
- ECan transfer energy to chlorophyll a
42A chlorophyll molecule:
- AContains an iron atom
- BContains carbon and nitrogen atoms
- CContains a magnesium atom
- DIs largely nonpolar
- EHas a porphyrin ring
43Carbon fixation reactions:
- AProduce ADP
- BHave no direct requirement for light
- CHave enzymes that are more active in light
- DProduce carbohydrates
- ERequire darkness
44ATP synthase releases ATP into the stroma
- AVerdadero
- BFalso
45Chemiosmosis
- AOccurs in aerobic respiration
- BBuilds up protons in the thylakoid lumen
- CConnects the electron transport chain to ATP formation
- DBuilds up protons in the inter membrane space of the mitochondria
- EBuilds up protons in the stroma
46Using the basic raw materials [blank_start]___,[blank_end] photosynthetic organisms use light energy to make ATP and other molecules that hold chemical energy. However, this energy cannot be stored
- ALight and water
- BWater and carbon dioxide
47When a molecule [blank_start]__[blank_end] a photon, an electron becomes energized.
- AAbsorbs
48In photosynthesis, energized electrons leave atoms and pass to an [blank_start]___[blank_end] molecule. In the process, these molecules become [blank_start]_.[blank_end]
- AElectron acceptor
- BReduced
49The lumen is the fluid-filled region within the inner membrane of chloroplasts that contains the enzymes for the Calvin cycle.
- AVerdadero
- BFalso
50Chlorophyll is located in the thylakoid membrane
- AVerdadero
- BFalso
51Chlorophylll absorbs light mainly in what portions of the visible spectrum?
- ARed and green
- BGreen and yellow
- CGreen and blue
- DBlue and red
52Chlorophyll a initiates the [blank_start]__[blank_end] reactions.
- ALight-dependent
53Photosynthesis involves the pigment chlorophyll capturing light energy and converting ___ into __ and releasing __ as a by-product
- ACarbon dioxide
- BLight energy
- CChemical energy
- DGlucose (G3P)
- EHydrogen
- FOxygen
54Carbon fixation reactions transfer the energy from ATP and NADPH to the bonds in organic molecules and occur in the stroma
- AVerdadero
- BFalso
55Carbon fixation “fixes” carbon atoms from __ to existing skeletons of organic molecules.
- ARubisco
- BCO2
56The light-dependent reactions use light energy to phosphorylation ___ to form ___ and reduce __ to form ___.
- AH2O -> O2
- BADP-> ATP
- CWater to hydrogen
- DNADP+ -> NADPH
57Photosystems, which consist of pigment molecules and proteins, absorb light energy and transfer it to a
- ACytochrome
- BReaction center
58The enzyme ATP synthase uses energy from a proton gradient to make ATP
- AVerdadero
- BFalso
59Coupling ATP production to the transfer of electrons energized by photons is called [blank_start]__[blank_end]
- APhotophosphorylation
60Protons accumulate in the __ and flow back across the membrane through __
- AThylakoid lumen; ATP synthase
- BStroma; proton pump
61Molecular oxygen is constantly replenished by the splitting of water that releases the oxygen that all aerobic organisms require for respiration
- AVerdadero
- BFalso
62The enzyme directly responsible for most of the carbon fixation on earth is
- AATP synthase
- BPEP carboxylase
- CCytochrome
- DRubisco
- EFerredoxin
Información
- Descripción
- Test sobre Chapter 9 , creado por Blakely Eller el 25/02/2020.
- Autor
- Blakely Eller
- Idioma
- English
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