BSC 197 Exam 1 Questions With Correct Answers

BSC 197 Exam 1 Questions With Correct
Answers

Scientific Method - CORRECT ANSWER✔✔-Observation, Hypothesis,
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Prediction, Experiment, Theory | |




What is the scientific method used for? - CORRECT ANSWER✔✔-It's an
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attempt to falsify your hypothesis
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Theory - CORRECT ANSWER✔✔-Backed up by substantial amount of
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evidence, well-tested comprehensive explanation for how something
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works


Law - CORRECT ANSWER✔✔-Process that can be explained by
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mathematical equations |




Three domains of organisms - CORRECT ANSWER✔✔-Backteria,
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Archaea, Eukarya |




Archea - CORRECT ANSWER✔✔-ancient bacteria- extremophiles
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,Backteria - CORRECT ANSWER✔✔-Eubacteria - true bacteria
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Eukarya - CORRECT ANSWER✔✔-plants, animals, fungi, protists
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Prokaryote - CORRECT ANSWER✔✔-Dont have a nucleus and derive
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from existing cells
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Eukaryote - CORRECT ANSWER✔✔-true cells that have a nucleus and
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drive from existing cells
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Law of Thermodynamics - CORRECT ANSWER✔✔-Energy cannot be
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created or destroyed, only transformed.
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Entropy/Disorder increases |




Most important elements for life - CORRECT ANSWER✔✔-Carbon(6-
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4V), Oxygen(8- 6V), Hydrogen(1- 1V), Nitrogen(7- 5V). Held by covalent
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bonds.


Atomic Structure - CORRECT ANSWER✔✔-Electron on outer shell,
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neutron and proton in center, nuclei.
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Atomic mass - CORRECT ANSWER✔✔-The average mass of all the
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isotopes of an element | | |

, Atomic number - CORRECT ANSWER✔✔-the number of protons in the
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nucleus of an atom | | |




electron configuration- oxygen - CORRECT ANSWER✔✔-1s2 2s2 2p4
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electron configuration- hydrogen - CORRECT ANSWER✔✔-1s1
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electron configuration- carbon - CORRECT ANSWER✔✔-1s2 2s2 2p2
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electron configuration- nitrogen - CORRECT ANSWER✔✔-1s2 2s2 2p3
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Purpose of chemical bonding - CORRECT ANSWER✔✔-Takes place to
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allow filling valence shells. Active elements don't have full outer shells
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and Stable elements do
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Covalent bond - CORRECT ANSWER✔✔-A chemical bond that involves
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sharing a pair of electrons between atoms in a molecule
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Ionic Bond - CORRECT ANSWER✔✔-Formed when one or more
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electrons are transferred from one atom to another
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