BIO 669 BUNDLE QUIZ 1 6 AND EXAMS 1 3
EXAM SCRIPT FULL QUESTIONS AND VERIFIED
ANSWERS
◉ All cells need: boundary.
Answer: A discrete boundary that separates the interior of the cell
from its exterior environment
◉ All cells need: materials and energy.
Answer: Ability to harness materials and energy from the
environment
◉ Atom.
Answer: The basic unit of matter
◉ Proton.
Answer: Subatomic particle with a positive charge
◉ Neutron.
Answer: Subatomic particle with no charge
◉ Electron.
,Answer: Subatomic particle with a negative charge
◉ Electron orbital.
Answer: Region around the nucleus where an electron is likely to be
found
◉ Electron shell.
Answer: Energy level containing orbitals around the nucleus
◉ Valence electrons.
Answer: Electrons in the outermost electron shell that largely
determine how an element behaves and interacts with other
elements
◉ Electron shell filling.
Answer: Electrons fill available orbitals and the outermost shell is
generally most stable when it contains eight electrons
◉ Electronegativity.
Answer: Measure of how strongly an atom attracts electrons
involved in a bond
◉ Cause of electronegativity.
,Answer: How strongly the nucleus pulls on electrons involved in a
bond
◉ Chemical bond.
Answer: An attraction that holds atoms or molecules together
◉ Unfilled electron orbitals.
Answer: Allow atoms to form chemical bonds
◉ Stable atoms.
Answer: Atoms are most stable when their electron orbitals are
filled
◉ Covalent bond.
Answer: A bond in which valence electrons are shared between two
atoms
◉ Covalent bond analogy.
Answer: Think of a covalent bond like glue
◉ Nonpolar covalent bond.
Answer: A covalent bond in which electrons are shared equally
, ◉ Nonpolar covalent bond electronegativity.
Answer: Atoms in the bond have similar electronegativities
◉ Polar covalent bond.
Answer: A covalent bond in which electrons are not shared equally
◉ Polar covalent bond electronegativity.
Answer: Atoms in the bond have different electronegativities
◉ Highly electronegative atom in a polar bond.
Answer: Holds the shared electrons more tightly and develops a
partial negative charge
◉ Other atom in a polar bond.
Answer: Develops a partial positive charge because the shared
electrons are pulled away from it
◉ Electronegativity order.
Answer: O > N > C = H
◉ Most electronegative of O N C and H.
EXAM SCRIPT FULL QUESTIONS AND VERIFIED
ANSWERS
◉ All cells need: boundary.
Answer: A discrete boundary that separates the interior of the cell
from its exterior environment
◉ All cells need: materials and energy.
Answer: Ability to harness materials and energy from the
environment
◉ Atom.
Answer: The basic unit of matter
◉ Proton.
Answer: Subatomic particle with a positive charge
◉ Neutron.
Answer: Subatomic particle with no charge
◉ Electron.
,Answer: Subatomic particle with a negative charge
◉ Electron orbital.
Answer: Region around the nucleus where an electron is likely to be
found
◉ Electron shell.
Answer: Energy level containing orbitals around the nucleus
◉ Valence electrons.
Answer: Electrons in the outermost electron shell that largely
determine how an element behaves and interacts with other
elements
◉ Electron shell filling.
Answer: Electrons fill available orbitals and the outermost shell is
generally most stable when it contains eight electrons
◉ Electronegativity.
Answer: Measure of how strongly an atom attracts electrons
involved in a bond
◉ Cause of electronegativity.
,Answer: How strongly the nucleus pulls on electrons involved in a
bond
◉ Chemical bond.
Answer: An attraction that holds atoms or molecules together
◉ Unfilled electron orbitals.
Answer: Allow atoms to form chemical bonds
◉ Stable atoms.
Answer: Atoms are most stable when their electron orbitals are
filled
◉ Covalent bond.
Answer: A bond in which valence electrons are shared between two
atoms
◉ Covalent bond analogy.
Answer: Think of a covalent bond like glue
◉ Nonpolar covalent bond.
Answer: A covalent bond in which electrons are shared equally
, ◉ Nonpolar covalent bond electronegativity.
Answer: Atoms in the bond have similar electronegativities
◉ Polar covalent bond.
Answer: A covalent bond in which electrons are not shared equally
◉ Polar covalent bond electronegativity.
Answer: Atoms in the bond have different electronegativities
◉ Highly electronegative atom in a polar bond.
Answer: Holds the shared electrons more tightly and develops a
partial negative charge
◉ Other atom in a polar bond.
Answer: Develops a partial positive charge because the shared
electrons are pulled away from it
◉ Electronegativity order.
Answer: O > N > C = H
◉ Most electronegative of O N C and H.
