BIOLOGY PROCTORED EXAM PENN FOSTER ACTUAL EXAM/ LATEST UPDATE 2024 WITH 200 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS)|A+GRADE

BIOLOGY PROCTORED EXAM PENN FOSTER ACTUAL EXAM/ LATEST UPDATE
2024 WITH 200 QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS)|A+GRADE

Characteristicsofliving things rk kr kr rk




- CorrectAnswer-
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-All are composed ofcells kr kr kr kr




-All obtain energy and use itto develop
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-Can sensechanges in the environmentand adjustin response to change
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-Exhibitmodifications thatrepresentadaptations to their environment kr kr kr rk kr kr kr




Levels ofBiologicalOrganization kr rk rk kr




-CorrectAnswer-atom,molecule,organelle,cell,tissue,organ, organ system, organism
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Howare organisms classified? kr kr kr




- CorrectAnswer-on thebasis of theirevolutionary/genetic relatedness
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Whatis the scientific method? Whatisi t'simportance in biologicalsciences?
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-CorrectAnswer-Process used to validate observations while minimizing observer bias
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It's goalis for researchto beconduced ina fair,unbiasedandrepeatable manner.Thebestway to discover howand why the w
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orld works kr




Whatis matter? kr kr rk




- CorrectAnswer-Anything that has mass and takes up space
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Whatis an atom? kr kr kr




- Correct Answer-
kr kr kr




smallest unit of matter that retains all the chemical properties ofan element. Theycombine to form molecules which then fo
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rm into a solid,gas or liquid
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Whatis the s tructureofana tom? kr kr kr rk kr rk kr




- CorrectAnswer-
kr rk




Nucleus in the center thatcontainsprotons (positively charged) and neutrons (no charge). The outermostregion is calle
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d an electron shell thatcontain the electrons (negatively charged)
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Whatis an ionic bond? kr kr kr kr kr




-CorrectAnswer-Achemicalbond that's formed when an atomtransfers and electron to anotherAtom
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Whatis acovalentbond? kr kr kr kr

,- CorrectAnswer-Results when 2 atoms share electrons inorder to have a completed outer shell
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Whatis adouble covalentbond? kr kr rk kr kr kr




- CorrectAnswer-Occurs when 2 atoms share 2 pairsof electroms
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In order to be an organic moleculeitmustcontain what?
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-CorrectAnswer-Carbon andhydrogen
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Whatare the maingroups oforganicmolecules thatbuild cellsand theirparts?
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-CorrectAnswer-Carbohydrates, proteins, lipids, nucleic acid
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Whatare the properties ofwater? kr kr kr kr kr kr




-CorrectAnswer-Its attraction to polarmolecules.High-specific heat.
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Highheatof vaporization. The lower de
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nsity of ice. Highpolarity. kr kr kr kr




Carbohydrates kr




-CorrectAnswer-Broken down to glucose to provideenergy.
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Whatare the differentkindsofcarbs? kr kr kr kr rk kr rk




-CorrectAnswer-Glucose=monosaccharide thatserves as blood sugar
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Sucrose=disaccharide which is table sugar rk kr kr kr kr




Polysaccharides= include s tarch, which s toresenergyin plantsGlycogen= stores ene kr kr kr kr kr kr kr rk kr kr




rgy in animals kr kr




Cellulose=makes up the structure of plantcell walls kr kr kr kr kr kr kr kr




Protein rk




-CorrectAnswer-
rk rk




macromolecule thatcontains carbon,hydrogen,oxygen,andnitrogen; needed by the body for growth and repair kr kr kr kr rk kr rk kr kr kr kr kr kr kr kr




Lipid kr




- CorrectAnswer-Energy-
kr rk




rich organic compounds, such as fats, oils,and waxes,thatare made of carbon, hydrogen,and oxygen.
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Serve as a long term energy source kr kr kr kr kr kr




Nucleicacid rk kr




-CorrectAnswer-macromolecule containing hydrogen,oxygen,nitrogen,carbon, and phosphorus
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Form DNAwhich acts to store genetic information
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Whatis the cell theory? kr kr kr kr kr




-CorrectAnswer-
rk rk

, Allliving organismsaremade upofcellsThe cell is the smalleststructural and functional unitofall living organisms
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Allcells arisefrom pre-existing cells
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Ribosome
-CorrectAnswer-Makes proteins
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Endoplasmic Reticulum kr kr




- Correct Answer-
kr kr




A cell structure that forms a maze of passageways in which proteins and other materials are carried from one partof the
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cellto another. rk kr




SmoothER kr rk




- CorrectAnswer-Makes lipids
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RoughER - CorrectAnswer-That portion ofthe endoplasmic reticulum s tudded withribosomes.
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GolgiApparatus -CorrectAnswer-Sorts and packs protein into vesicles and transportsthem
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Lysosome
-CorrectAnswer-Digests food,bacteria and worn outorganelles
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Vacuole
- CorrectAnswer-Storesfood, enzymesand other material
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Mitochondria kr




-CorrectAnswer-Powerhouse ofthe cell- produces energyfor growth,development and movement
rk rk rk kr kr kr kr kr kr rk kr kr




Nucleus
- CorrectAnswer-Apart ofthecellcontaining DNAand RNAand responsiblefor growth and reproduction
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Cellwall rk kr




- CorrectAnswer-Arigid s tructure thatsurrounds the cellmembrane andprovides support to the cell
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Explain theprocessofdiffusion: rk kr rk kr kr




-CorrectAnswer-
rk rk




Molecules move from an area ofhigher concentration to an area of lower concentration until the concentration of mole
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cules is the same atboth sites kr kr kr kr kr kr




Explain the processofosmosis: rk kr rk rk




- CorrectAnswer-Water moves fromareas oflowsoluteconcentration to areas of high solute concentration
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Describeabasic enzymatic reaction: -CorrectAnswer-S+E= P+E rk kr kr rk kr kr rk kr