Quiz
Bio Test 3
Crie uma conta grátis para terminar este quiz
Salve seu progresso e veja sua nota final.
Já tem uma conta? Inicie sessão
Perguntas do quiz (49)
1Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which _____ converts to ATP, the "fuel" used by all living things.
- ASpeciation
- BAdaptation
- CDenaturation
- DCellular Respiration
- EEutrophication
2Life gains most of its energy from:
- AWater
- BSunlight
- CSugar molecules
- DOxygen
- ECarbohydrate Molecules
3Which of the following statements best represents the relationship between respiration and photosynthesis?
- ARespiration occurs only in animals and photosynthesis occurs only in plants.
- BPhotosynthesis occurs only in the day and respiration occurs only in the night.
- CPhotosynthesis stores energy in complex organic molecules, while respiration releases it.
- DRespiration stores energy in complex organic molecules, while photosynthesis releases it.
- EPhotosynthesis reverses the biochemical pathways of respiration.
4Potential energy:
- AIs stored energy unavailable to do work
- BTransfers motion to matter
- CIs contained in matter placed in certain positions or arrangements.
- DContains less energy than kinetic energy
- EIs kinetic energy that has not yet been turned to heat.
5Which of the following is NOT a form of kinetic energy?
- AA ball rolling down a hill
- BFlowing water turning a turbine
- CA chameleon tongue catching a bug
- DA covalent bond linking phosphate molecules
- EA pitcher throwing a baseball
6Every time a source of energy is converted from one form to another:
- AThe total energy of the system increases
- BThe total amount of energy in the universe is reduced by a tiny amount
- CSome of the energy is converted to heat, which is one of the least usable forms of kinetic energy
- DThe first law of thermodynamics is violated
- EThe entropy in the system is reduced
7When ATP is hydrolyzed to ADP, what happens?
- ARibose is removed.
- BTwo phosphates are removed.
- CAdenine is removed.
- DThree phosphates are removed
- EOne phosphate is removed
8Each ATP molecule is composed of three separate subunits. Which of the following is NOT a proper description of one of these subunits?
- AThree carbon-nitrogen rings
- BAn adenine
- CA five-carbon sugar
- DA triphosphate group
- EA ribose
9The phosphate groups in ATP:
- AAre bonded to each other
- BRepresent a significant source of stored energy
- CRepresent potential energy
- DRelease energy when separated from the rest of the molecule.
- EAll of the above are correct
10Which of the following is NOT a product of photosynthesis?
- AGlucose
- BOxygen
- CSugars
- DCarbon Dioxide
- ENone of the above; all are products of photosynthesis
11A green plant can carry out photosynthesis if given nothing more than:
- AWater
- BLight
- CWater, light, and air
- DWater and light
- EAir
12Which by-product of photosynthesis was important in altering the atmosphere of the earth so that aerobic organisms could evolve?
- AAir
- BMethane gas
- CNitrogen
- DCarbon dioxide
- EOxygen
13Carotenoids:
- AAre primary pigments in certain plants and algae chloroplasts that fix carbon in place of chlorophyll.
- BAre the organelles in a leaf cell in which photosynthesis occurs
- CAre the stacks of thylakoid membranes in a chloroplast
- DAre the organelles in a leaf cell in which respiration occurs
- EAre accessory pigments in chloroplasts that protect the chlorophyll by absorbing excessive light energy
14Chlorophyll b and the cartenoids are important as receptors of light energy because they
- ACan absorb green light
- BTransform this energy into chemical energy
- CRespond to wavelengths different from the wavelengths that chlorophyll a responds to
- DCan respond to infrared and ultraviolet light
- EHave their own photosystems
15The most effective position(s) of the visible spectrum in driving photosynthesis is (are):
- AThe violet-blue portion
- BThe yellow-green portion
- CThe red-orange portion
- DBoth a. and b. are correct
- EBoth a. and c. are correct
16Biologically speaking, a pigment:
- AIs a molecule that absorbs carbon dioxide.
- BIs a cell that fixes carbon
- CIs a molecule that absorbs a photon
- DIs a molecule that releases oxygen
- EIs a cell that absorbs a photon
17When a photon strikes a molecule, the photon may do any of the following EXCEPT:
- APass through a molecule
- BBounce off the molecule
- CChange wave lengths
- DBe absorbed by the molecule
- EAll of the above are possible outcomes of a photon striking a molecule.
18A plant whose leaves are reddish-yellow is NOT absorbing light from which wavelengths of the visible-light spectrum?
- ARed and yellow
- BGreen, red, and yellow
- CBlue and violet
- DGreen and red
- EGreen and yellow
19During photosynthesis, visible light has enough energy to directly:
- AExcite electons
- BSynthesize NADPH
- CConvert ADP into ATP
- DReflect light in the red spectrum
- ESplit a water molecule into hydrogen and oxygen
20The light reactions of photosynthesis supply the Calvin cycle with:
- AATP, NADPH
- BCO2 and ATP
- CFree electrons
- DSugar and O2
- ELight energy
21Photosystems are:
- AArrangements of thylakoid membranes within the plant cell wall
- BArrangements of the ATP-synthase molecules within chloroplasts
- CArrangements of the chloroplasts within the cells lining the surface of the leaves
- DThe wavelengths of light that reach the earth from the sun
- EArrangements of light-catching pigments within chloroplasts
22What are the resulting products of the splitting of water in photosynthesis?
- AElectrons, oxygen, and hydroxide ions
- BElectrons, carbon dioxide, and hydrogen ions
- CElectrons and oxygen only
- DElectrons, oxygen, and photons
- EElectrons, oxygen, and hydrogen ions
23Energized electrons from the water-splitting photosystem pass down an electron-transport chain to the _____ -producing photosystem.
- AChlorophyll
- BNADPH
- CCarbohydrate
- DOxygen
- EATP
24Which of the following statements about the light reactions of photosynthesis is correct?
- APigments absorb light energy, which excites electrons
- BThe energy of the sun is captured by potential energy
- CWater molecules split, providing a source of electrons
- DOnly a. and c. are correct
- Ea., b., and c. are correct
25Photosynthesizing plants rely on water:
- ATo replace electrons that are excited by light energy and passed from molecule to molecule down an electron transport chain.
- BTo serve as a high-energy electron carrier
- CTo concentrate the beams of light hitting a leaf, focusing them on the reaction center
- DTo provide the proton necessary to produce chlorophyll
- ETo replenish oxygen molecules that are lost during photosynthesis.
26Oxygen gas produced during photosynthesis originates as:
- AOxygen atoms are released by the metabolism of carbohydrates
- BOxygen atoms contained in carbon dioxide are released when the carbon is fixed
- CA by-product of nitrogen-fixing bacteria
- DA molecule of chlorophyll oxidized by a photon
- EOxygen atoms contained in water molecules
27Where does the "photo" part of photosynthesis occur?
- AIn the stroma
- BIn the thylakoid membrane
- CIn the Hobbesian membrane
- DIn the cellular cytoplasm
- EIn the cell membrane
28Where does the Calvin cycle take place?
- AIn the stroma of the chloroplast
- BIn the thylakoid membrane
- CIn the Hobbesian membrane
- DIn the cellular cytoplasm
- EAround the chlorophyll molecule
29The most abundant protein in the world is the enzyme that initiates the fixation of carbon in the Calvin cycle. This enzyme is called:
- ARubisco
- BRibulose biphosphate
- CATP-synthase
- DGlyceraldehyde-3-phosphate
- ECrassulacean acid
30Which of the following does NOT occur during the Calvin cycle?
- AConsumption of ATP
- BOxidation of NADH
- CSplitting water
- DConsumption of carbon dioxide
- ECarbon fixation
31The carbon dioxide needed for photosynthesis enters the plant through the:
- AStroma
- BStomata
- CGrana
- DThylakoid
- ERoots
32Which of the following products of the light reactions of photosynthesis are later employed in the Calvin cycle?
- AADP and RuBP
- BNADPH and ATP
- CNADPH and ADP
- DFree oxygen and water
- ENADP and ATP
33The specialized cells that facilitate gas exchange in plants are known as:
- ABundle-sheaths
- BStomata
- CValves
- DPumps
- EGrana
34Which of the following statements is most correct concerning the movement of materials through the stomata?
- AWater moves out along with CO2; O2 moves in
- BWater and O2 move out; CO2 moves in
- CWater moves out; CO2 and O2 move out
- DWater moves in along with CO2; O2 moves out
- EWater moves in; CO2 and O2 move out
35What is the first step in CAM photosynthesis?
- APlants close their stomata to raise internal temperatures
- BPlants open their stomata at night to take in carbon dioxide
- CPlants release water through their stomata and convert phosphoglyceric acid to phosphoglyceric aldehyde
- DPlants open their stomata at any time to take in carbon dioxide
- EPlants open their stomata to raise internal temperatures
36During C4 photosynthesis:
- APlants are able to continue producing sugars even when they must close their stomata to reduce water loss during hot days.
- BPlants utilize less ATP when producing sugar
- CPlants are able to produce sugars without any input of carbon dioxide
- DPlants are able to reduce water loss by producing more rubisco
- EPlants are able to generate water molecules to cool their leaves
37Aerobic bacteria:
- ALack mitochondria
- BHave a true nucleus
- CHave mitochondria and undergo respiration in the same manner as fungi
- DDo not exist
- EBoth a. and b. are correct
38Glycolysis:
- AIs not performed in plants, which get their energy solely through photosynthesis
- BOccurs in all cells
- CIs performed solely on the glucose ingested by the organism
- DIs also referred to as the Krebs cycle
- ECompletely oxidizes glucose to carbon dioxide
39Three different metabolic pathways are responsible for the production of ATP. What are they?
- AGlycolysis, oxidation, and the Calvin cycle reactions
- BHydrolysis, active transport, and the light reactions
- CGlycolysis, the reactions on the electron transport chain, and the Krebs (citric acid) cycle
- DSubstrate inhibition, catabolism, and fermentation
- ENone of the above is correct
40In glycolysis, one molecule of glucose containing six carbons in converted to two molecules of _____ containing three carbons each. This reaction also yields two molecules of _____ and two molecules of _____.
- ALactic acid, O2, acetaldehyde
- BPyruvate, ATP, NADH
- CAcetyl-CoA, ADP, P
- DGalactose, H2O, ATP
- ESucrose, lactic acid, FADH
41Which of the following energy-generating processes is the only one that occurs in all living organisms
- AThe Krebs cycle
- BGluconeogenesis
- CGlycolysis
- DPhotophosphorylation
- ENone of the above. There are no energy-generating processes that occur in all living organisms
42Energy used in cellular respiration can originate from:
- ACarbohydrates and proteins only
- BCarbohydrates only
- CFats only
- DProteins only
- ECarbohydrates, proteins, and fats
43Which of the following statements about glycolysis is INCORRECT?
- AIt occurs in the cytoplasm of the cell
- BIt requires oxygen
- CIt results in the oxidation of glucose
- DIt generates ATP
- EIt leads to the formation of pyruvate
44During the Krebs cycle:
- AThe products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADH
- BCellular respiration can continue even in the absence of oxygen
- CThe products of glycolysis are completely converted into ATP.
- DHigh-energy electron carriers pass their energy to molecules of sugar which store them as potential energy
- EThe products of glycolysis are further broken down, generating additional ATP and the high-energy electron carrier NADPH
45The generation of ATP by the movement of protons down their concentration gradient occurs in:
- AMitochondria
- BChloroplasts
- CEndoplasmic reticula
- DBoth a. and b. are correct
- Ea., b., and c. are correct
46Fermentation reactions generally occur under conditions of;
- ALow glucose levels
- BHigh oxygen concentrations
- CLow methane concentration
- DLow oxygen concentration
- EHigh temperatures
47Which of the following statements about fermentation is NOT correct?
- AFermentation is a less efficient energy producer than aerobic respiration
- BFermentation utilizes the electrons generated in the glycolytic breakdown of glucose
- CFermentation is an anaerobic process
- DIn fermentation, the molecules that are used as final electron acceptors differ from those used when glycolysis occurs in the presence of oxygen
- EAll of the above are correct
48All alcoholic beverages are produced as the result of;
- ACellular respiration by yeast occurring in the absence of free electrons
- BCellular respiration by bacteria occurring in the absence of free electons
- CCellular respiration by bacteria occurring in the absence of oxygen
- DCellular respiration occurring in the absence of sugar
- ECellular respiration by yeast occurring in the absence of oxygen
49In cellular respiration;
- AEnergy-rich carbohydrate molecules are oxidized to carbon dioxide and water
- BEnergy-rich fat molecules are oxidized to carbon dioxide and water
- CEnergy-rich sugar molecules are oxidized to carbon dioxide and water
- DEnergy-rich carbohydrate molecules are oxidized to carbon dioxide and oxygen
- Ea., b., and c. are correct
Informações
- Descrição
- Quiz sobre Bio Test 3, criado por Juliette Stevens em 05-04-2016.
- Autor
- Juliette Stevens
- Idioma
- English
- Visualizações
- 4
- Avaliação
- Ainda sem avaliações Avalie este quiz