BSC 2010 - Final Exam (Dennis - FSU) Questions and Correct Answers/ Latest Update / Already Graded

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BSC 2010 - Final Exam (Dennis - FSU)
Questions and Correct Answers/ Latest
Update / Already Graded
Protons

Ans: postive charge (in nucleus)


Atom

Ans: smallest unit of matter that still retains the properties of
an element.


Element

Ans: a substance that cannot be broken down to other
substances by chemical reactions.


matter

Ans: anything that takes up space and has mass


cell

Ans: ___ is the basic unit of structure and function in an
organism.


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Neutrons

Ans: no charge (in nucleus)


Electrons

Ans: negative charge (form a cloud around nucleus)


First shell of table

Ans: 2 e-


Second shell of table

Ans: 8 e-


Third shell of table

Ans: 8 e-


Isotopes

Ans: two atoms of an element that differ in the amount of
neutrons



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electronegativity

Ans: describes an atoms attraction for electrons


RNA; protein

Ans: central dogma: DNA is transcribed into ______ then
translated into a ______.


Eukaryotic; prokaryotic

Ans: a _____ cell has membrane-enclosed organelles while a
_____ cell is simpler, usually smaller; and does not contain any
membrane-enclosed organelles.


valence electrons

Ans: those electrons that are found in the outermost
shell/valence shell. Chemical behavior is determined by _____
______.


the more electronegative an atom

Ans: the more strongly it pulls shared electrons toward itself.


covalent bonds

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Ans: the sharing of a pair of valence electrons by two atoms


non-polar

Ans: e- are evenly shared


polar

Ans: e- are unevenly shared (H20 is a polar molecule)


ionic bond

Ans: an attraction between an anion and a cation


cation

Ans: positively charged ion


anion

Ans: negatively charged ion


hydrogen, oxygen, carbon and nitrogen




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