BIOLOGY 100 FINAL EXAM | QUESTIONS AND ANSWERS | 100%
CORRECT ANSWERS | LATEST EXAM
Atom - CORRECT ANSWER - the basic unit of a chemical element (OMG so
'basic')
Molecules - CORRECT ANSWER - a group of atoms bonded together,
representing the smallest fundamental unit of a chemical compound that can
take part in a chemical reaction
Elements - CORRECT ANSWER - each of more than one hundred substances
that cannot be chemically inter-converted or broken down into simpler
substances and are primary constituents of matter. Each element is distinguished
by its atomic number, i.e the number of protons in the nuclei of its atoms.
Nucleus - CORRECT ANSWER - a dense organelle present in most
eukaryotic cells, typically a single rounded structure bounded by a double
membrane, containing the genetic material.
Eukaryote - CORRECT ANSWER - an organism consisting of a cell or cells in
which the genetic material is DNA in the form of chromosomes contained
within a distinct nucleus. Eukaryotes include all living organisms other than the
eubacteria and archaebacteria.
Prokaryote - CORRECT ANSWER - a microscopic single-celled organism
that neither has a distinct nucleus with a membrane nor other specialized
organelles. Prokaryotes include the bacteria and the cyanobacteria.
,Electron - CORRECT ANSWER - a stable subatomic particle with a charge of
negative electricity, found in all atoms and acting as the primary carrier of
electricity in solids.
Proton - CORRECT ANSWER - a stable subatomic particle occurring in all
atomic nuclei, with a positive electric charge equal in magnitude to that of an
electron, but of opposite sign.
Neutron - CORRECT ANSWER - a subatomic particle of the same mass as a
proton but without an electric charge, present in all atomic nuclei except those
of ordinary hydrogen.
Ion - CORRECT ANSWER - an atom or molecule with a net electric charge
due to the loss or gain of one or more electrons.
Isotope - CORRECT ANSWER - each of two or more forms of the same
element that contain equal numbers of protons but different numbers of neutrons
in their nuclei, and hence differ in relative atomic mass but not in chemical
properties; in particular, a radioactive form of an element.
Ionic bond - CORRECT ANSWER - a chemical bond in which one atom loses
an electron to form a positive ion and the other atom gains an electron to form a
negative ion.
Covalent bond - CORRECT ANSWER - a chemical bond formed when
electrons are shared between two atoms. Usually each atom contributes one
electron to form a pair of electrons that are shared by both atoms. Two types:
Polar and Nonpolar
Hydrogen bond - CORRECT ANSWER - a weak bond between two molecules
resulting from an electrostatic attraction between a proton in one molecule and
an electronegative atom in the other.
,Solvent - CORRECT ANSWER - able to dissolve other substances
Solute - CORRECT ANSWER - the minor component in a solution, dissolved
in the solvent
Surface tension - CORRECT ANSWER - the tension of the surface film of a
liquid caused by the attraction of the particles in the surface layer by the bulk of
the liquid, which tends to minimize surface area.
Organic - CORRECT ANSWER - carbon based
Macromolecules - CORRECT ANSWER - a molecule containing a very large
number of atoms. Types: carbohydrates, lipids, nucleic acids, proteins.
Polymer - CORRECT ANSWER - chains of molecules
Monomer - CORRECT ANSWER - a molecule that can be bonded to other
identical molecules to form a polymer
Hydrophilic - CORRECT ANSWER - water-luv'n
Hydrophobic - CORRECT ANSWER - water-h8'n
Saturated fat - CORRECT ANSWER - a fat that contains only saturated fatty
acids, is at a solid room temperature, and comes chiefly from animal food
products.
Unsaturated fat - CORRECT ANSWER - a fat derived from plant and some
animal sources that is liquid at room temperature
, Trans-fatty acid - CORRECT ANSWER - an unsaturated fatty acid of a type
occurring in margarine and manufactured cooking oils as a result of the
hydrogen process, having a trans arrangement of the carbon atoms adjacent to
its double bonds. Consumption of such acids is thought to increase the risk of
atherosclerosis.
Atherosclerosis - CORRECT ANSWER - a disease of the arteries
characterized by the deposition of plaques of fatty material on their inner walls
Lipoprotein - CORRECT ANSWER - any of a group of soluble proteins that
combine with and transport fat or other lipids in the blood plasma
Phospolipid - CORRECT ANSWER - a lipid containing a phosphate group in
its molecule
Starch - CORRECT ANSWER - Starch or amylum is a carbohydrate
consisting of a large number of glucose units joined by glycosidic bonds. This
polysaccharide is produced by most green plants as an energy store.
Glycogen - CORRECT ANSWER - Glycogen is a multibranched
polysaccharide of glucose that serves as a form of energy storage in animals and
fungi. The polysaccharide structure represents the main storage form of glucose
in the body
Glucose - CORRECT ANSWER - a simple sugar that is an important energy
source in living organisms and is a component of many carbohydrates.
LDLs - CORRECT ANSWER - Low Density Lipoproteins- the form of
lipoprotein in which cholesterol is transported in the blood.
CORRECT ANSWERS | LATEST EXAM
Atom - CORRECT ANSWER - the basic unit of a chemical element (OMG so
'basic')
Molecules - CORRECT ANSWER - a group of atoms bonded together,
representing the smallest fundamental unit of a chemical compound that can
take part in a chemical reaction
Elements - CORRECT ANSWER - each of more than one hundred substances
that cannot be chemically inter-converted or broken down into simpler
substances and are primary constituents of matter. Each element is distinguished
by its atomic number, i.e the number of protons in the nuclei of its atoms.
Nucleus - CORRECT ANSWER - a dense organelle present in most
eukaryotic cells, typically a single rounded structure bounded by a double
membrane, containing the genetic material.
Eukaryote - CORRECT ANSWER - an organism consisting of a cell or cells in
which the genetic material is DNA in the form of chromosomes contained
within a distinct nucleus. Eukaryotes include all living organisms other than the
eubacteria and archaebacteria.
Prokaryote - CORRECT ANSWER - a microscopic single-celled organism
that neither has a distinct nucleus with a membrane nor other specialized
organelles. Prokaryotes include the bacteria and the cyanobacteria.
,Electron - CORRECT ANSWER - a stable subatomic particle with a charge of
negative electricity, found in all atoms and acting as the primary carrier of
electricity in solids.
Proton - CORRECT ANSWER - a stable subatomic particle occurring in all
atomic nuclei, with a positive electric charge equal in magnitude to that of an
electron, but of opposite sign.
Neutron - CORRECT ANSWER - a subatomic particle of the same mass as a
proton but without an electric charge, present in all atomic nuclei except those
of ordinary hydrogen.
Ion - CORRECT ANSWER - an atom or molecule with a net electric charge
due to the loss or gain of one or more electrons.
Isotope - CORRECT ANSWER - each of two or more forms of the same
element that contain equal numbers of protons but different numbers of neutrons
in their nuclei, and hence differ in relative atomic mass but not in chemical
properties; in particular, a radioactive form of an element.
Ionic bond - CORRECT ANSWER - a chemical bond in which one atom loses
an electron to form a positive ion and the other atom gains an electron to form a
negative ion.
Covalent bond - CORRECT ANSWER - a chemical bond formed when
electrons are shared between two atoms. Usually each atom contributes one
electron to form a pair of electrons that are shared by both atoms. Two types:
Polar and Nonpolar
Hydrogen bond - CORRECT ANSWER - a weak bond between two molecules
resulting from an electrostatic attraction between a proton in one molecule and
an electronegative atom in the other.
,Solvent - CORRECT ANSWER - able to dissolve other substances
Solute - CORRECT ANSWER - the minor component in a solution, dissolved
in the solvent
Surface tension - CORRECT ANSWER - the tension of the surface film of a
liquid caused by the attraction of the particles in the surface layer by the bulk of
the liquid, which tends to minimize surface area.
Organic - CORRECT ANSWER - carbon based
Macromolecules - CORRECT ANSWER - a molecule containing a very large
number of atoms. Types: carbohydrates, lipids, nucleic acids, proteins.
Polymer - CORRECT ANSWER - chains of molecules
Monomer - CORRECT ANSWER - a molecule that can be bonded to other
identical molecules to form a polymer
Hydrophilic - CORRECT ANSWER - water-luv'n
Hydrophobic - CORRECT ANSWER - water-h8'n
Saturated fat - CORRECT ANSWER - a fat that contains only saturated fatty
acids, is at a solid room temperature, and comes chiefly from animal food
products.
Unsaturated fat - CORRECT ANSWER - a fat derived from plant and some
animal sources that is liquid at room temperature
, Trans-fatty acid - CORRECT ANSWER - an unsaturated fatty acid of a type
occurring in margarine and manufactured cooking oils as a result of the
hydrogen process, having a trans arrangement of the carbon atoms adjacent to
its double bonds. Consumption of such acids is thought to increase the risk of
atherosclerosis.
Atherosclerosis - CORRECT ANSWER - a disease of the arteries
characterized by the deposition of plaques of fatty material on their inner walls
Lipoprotein - CORRECT ANSWER - any of a group of soluble proteins that
combine with and transport fat or other lipids in the blood plasma
Phospolipid - CORRECT ANSWER - a lipid containing a phosphate group in
its molecule
Starch - CORRECT ANSWER - Starch or amylum is a carbohydrate
consisting of a large number of glucose units joined by glycosidic bonds. This
polysaccharide is produced by most green plants as an energy store.
Glycogen - CORRECT ANSWER - Glycogen is a multibranched
polysaccharide of glucose that serves as a form of energy storage in animals and
fungi. The polysaccharide structure represents the main storage form of glucose
in the body
Glucose - CORRECT ANSWER - a simple sugar that is an important energy
source in living organisms and is a component of many carbohydrates.
LDLs - CORRECT ANSWER - Low Density Lipoproteins- the form of
lipoprotein in which cholesterol is transported in the blood.
