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Bio Test 3
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Questions in this 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
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- Quiz on Bio Test 3, created by Juliette Stevens on 05/04/2016.
- Author
- Juliette Stevens
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