BIOLOGY 107 QUIZ 1
2 divisions of pure substances - Correct Answers -Compounds & Elements
Atom - Correct Answers -Basic chemical Unit and consists of protons(1) neutrons(0)
and {(electrons(-) which rotate around nucleus }
isotopes - Correct Answers -Same number of protons and electrons but different
number of neutrons
goiter - Correct Answers -An iodine deficiency prevents
production of thyroid hormones,
resulting in a
molecules - Correct Answers -the combination of two or more atoms
compounds - Correct Answers -molecules composed of 2 or more different atoms in a
fixed ratio H2O, NH3, CO2, NaCl
3 types of chemical bonds - Correct Answers -Ionic, covalent, and hydrogen bonds
Ionic Bonds - Correct Answers -Losing or gaining electrons, strong bonds for dry solids,
weak in water (e.g. Na+ + Cl- = NaCl (table salt)
High Fructose Corn Syrup - Correct Answers -glucose atoms are
rearranged to make the glucose isomer,
fructose.
Polysaccharides - Correct Answers --long chains of sugar units
-are usually water loving(hydrophilic)
-like cotton comprised mostly of cellulose bath towels for example
Excitotoxins - Correct Answers -Laboratory studies have shown they cause
degeneration
and even death in important nerve cells.
*Parkinson's disease
*Multiple sclerosis
*Alzheimer's disease
like splenda
, Ion - Correct Answers -an atom or molecule with an electrical charge resulting from the
gain or loss of electrons
covalent bonds - Correct Answers -sharing of electrons(two types polar and non polar)
polar covalent bonds - Correct Answers -unequal sharing of electrons
non-polar covalent bonds - Correct Answers -equal sharing of electrons
hydrogen bonds - Correct Answers -bonding between polar molecules example is water
cohesion - Correct Answers -stickiness at the top surface of water is due to
adhesion - Correct Answers -stickiness or drag
surface tension - Correct Answers -a measure of how difficult it is to break a liquids
surface
How are hydrogen bonds broken and formed - Correct Answers -absorption of
heat/release of heat cooling
solution - Correct Answers -a liquid consisting of a of a mixture of 2 or more substances
regular ph levels - Correct Answers -majority of functions ph 6.5-7.5 the ph of blood 7.4
buffer - Correct Answers -substance the minimizes changes in ph
Oxidation-Reduction - Correct Answers -atom loses an electron and atom gains an
electron
Dehydration Synthesis - Correct Answers -loss of water as a result of chemical change
hydrolysis - Correct Answers -Digestion( water is used to break one of the reactants into
smaller products)
Phosphorylation - Correct Answers -A phosphate group is added to another molecule
The result is the transfer of their potential energy
to another molecule.
ACID - BASE - Correct Answers -Ion exchange reactions
4 major molecules of life - Correct Answers -carbohydrates, lipids, proteins, and nucleic
acids
Carbohydrates - Correct Answers --function as energy source
-contain carbon, oxygen, and hydrogen
2 divisions of pure substances - Correct Answers -Compounds & Elements
Atom - Correct Answers -Basic chemical Unit and consists of protons(1) neutrons(0)
and {(electrons(-) which rotate around nucleus }
isotopes - Correct Answers -Same number of protons and electrons but different
number of neutrons
goiter - Correct Answers -An iodine deficiency prevents
production of thyroid hormones,
resulting in a
molecules - Correct Answers -the combination of two or more atoms
compounds - Correct Answers -molecules composed of 2 or more different atoms in a
fixed ratio H2O, NH3, CO2, NaCl
3 types of chemical bonds - Correct Answers -Ionic, covalent, and hydrogen bonds
Ionic Bonds - Correct Answers -Losing or gaining electrons, strong bonds for dry solids,
weak in water (e.g. Na+ + Cl- = NaCl (table salt)
High Fructose Corn Syrup - Correct Answers -glucose atoms are
rearranged to make the glucose isomer,
fructose.
Polysaccharides - Correct Answers --long chains of sugar units
-are usually water loving(hydrophilic)
-like cotton comprised mostly of cellulose bath towels for example
Excitotoxins - Correct Answers -Laboratory studies have shown they cause
degeneration
and even death in important nerve cells.
*Parkinson's disease
*Multiple sclerosis
*Alzheimer's disease
like splenda
, Ion - Correct Answers -an atom or molecule with an electrical charge resulting from the
gain or loss of electrons
covalent bonds - Correct Answers -sharing of electrons(two types polar and non polar)
polar covalent bonds - Correct Answers -unequal sharing of electrons
non-polar covalent bonds - Correct Answers -equal sharing of electrons
hydrogen bonds - Correct Answers -bonding between polar molecules example is water
cohesion - Correct Answers -stickiness at the top surface of water is due to
adhesion - Correct Answers -stickiness or drag
surface tension - Correct Answers -a measure of how difficult it is to break a liquids
surface
How are hydrogen bonds broken and formed - Correct Answers -absorption of
heat/release of heat cooling
solution - Correct Answers -a liquid consisting of a of a mixture of 2 or more substances
regular ph levels - Correct Answers -majority of functions ph 6.5-7.5 the ph of blood 7.4
buffer - Correct Answers -substance the minimizes changes in ph
Oxidation-Reduction - Correct Answers -atom loses an electron and atom gains an
electron
Dehydration Synthesis - Correct Answers -loss of water as a result of chemical change
hydrolysis - Correct Answers -Digestion( water is used to break one of the reactants into
smaller products)
Phosphorylation - Correct Answers -A phosphate group is added to another molecule
The result is the transfer of their potential energy
to another molecule.
ACID - BASE - Correct Answers -Ion exchange reactions
4 major molecules of life - Correct Answers -carbohydrates, lipids, proteins, and nucleic
acids
Carbohydrates - Correct Answers --function as energy source
-contain carbon, oxygen, and hydrogen
