Bio 1320 Bergh Final Exam Practice
Questions and Answers
What are the 5 characteristics of all living creatures? - Answer️️ -1)
Organization
2)Energy Use
3)Maintains internal constancy
4)Reproduction, Growth, & Development
5)Evolution
Levels of organization from smallest to largest - An...
Biology 1320 :Texas State University
Matter - Answer✔️✔️-anything that takes up space. ex:organisms rocks the
ocean
Atom and the charges that make up an atom - Answer✔️✔️-Atom:the
smallest possible "piece" of an element that retains the characteristics of the
element.
-proton-positive charge
-neutron=neutral charge
-electron=negative charge
Element - Answer✔️✔️-a pure substance that cannot be broken down by
chemical means into other substances
Atomic Number - Answer✔️✔️-the number of protons in the nucleus
Atomic Mass - Answer✔️✔️-the number of protons and neutrons in the
nucleus
Isotope - Answer✔️✔️-any of the forms of an element, each having a
different number of neutrons in the nucleus
How many electrons reside a complete innermost electron shell, how many
reside in complete outer shells - Answer✔️✔️-innermost=2
Biology 1320 :Texas State University
inert atom - Answer✔️✔️-with a filled outer valence shell an inert atom is
not able to gain or lose an electron and therefore is not able to participate in
any chemical reactions. they are very stable
molecule - Answer✔️✔️-a group of atoms bonded together, representing the
smallest fundamental unit of a chemical compound that can take part in a
chemical reaction
How many pairs of electrons are shared in a single covalent bond -
Answer✔️✔️-2 pairs
Polar covalent bond - Answer✔️✔️-a lopsided union, one nucleus exerts as a
much stronger pull on the shared electron that does the other nucleus.
shares electrons-unequally with less electronegative partner
nonpolar covalent bond - Answer✔️✔️-a "bipartisian" union in which both
atoms exert an equal pull on their shared electrons
ionic bond - Answer✔️✔️-one atom is electronegative that it rips electrons
from another atoms valence shell
hydrogen bond - Answer✔️✔️-opposite partial charges on adjacent
molecules or within a single large molecule attrract each other
Cation - Answer✔️✔️-lost electrons become positively charged ions
Anion - Answer✔️✔️-gained electrons become negatively charged ions
Property of water that results in cohesion - Answer✔️✔️-hydrogen bonds
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