biostudyguide2 - Spears Hinkle Biology 110 Quiz Answers Chapters 1-7 Chapter 1 1 The smallest unit of life is the cell 2 Energy is required to maintain

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Spears HinkleBiology 110Quiz Answers: Chapters 1-7Chapter 1:1.The smallest unit of life is the cell.2.Energyis required to maintain levels of biological organization, from cells to populations, communities, and even entire ecosystems.3.Homeostasisis a state in which the internal environment is being maintained within a tolerable range.4.Researchers assign all species to 1 of 3 domains.5.DNA contains instructions for building proteins, undergoes mutation, and istransmitted from parents to offspring.6.Inheritanceis the acquisition of traits from parents who transmit their DNA to offspring.7.Differences in heritable traits arise through mutation.8.A trait is adaptiveis it improves an organism’s ability to survive and reproduce in the prevailing environment.9.A control group is the standard against which experimental groups can becompared.10. MATCHINGChapter 2:1.Every type of atom does notconsist of protons, neutrons, and electrons.2.Electrons carry a negativecharge.3.A traceris any molecule to which radioisotope has been attached for research or diagnostic purposes.4.Atoms share electrons unequally in a polar covalentbond.5.In a hydrogen bond, a covalently bound hydrogen atom weakly attracts an electronegativeatom in a different molecule or a different region of the same molecule.
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