Biology 101 Final Exam Questions And Answers Well Illustrated.
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Course
Biology 101
Institution
Biology 101
Biology 101 Final Exam Questions And Answers Well Illustrated.
Neutron - correct answer. A particle with no charge (neither positive nor negative) that is present in the nucleus is called Neutron
Proton - correct answer. a subatomic particle that has a positive charge and that i...
Biology 101 Final Exam Questions And
Answers Well Illustrated.
Neutron - correct answer. A particle with no charge (neither positive nor negative) that
is present in the nucleus is called Neutron
Proton - correct answer. a subatomic particle that has a positive charge and that is
found in the nucleus of an atom
Electron - correct answer. an elementary particle with negative charge, negatively
charged particle; located outside the atomic nucleus
Mass number - correct answer. the total number of protons and neutrons in the
nucleus of an atom
atomic number & mass number - correct answer. atomic number- number of protons
in one atom of the element.
mass number- number of protons + number of neutrons in one atom of the element
Isotope - correct answer. atoms of the same element that have different numbers of
neutrons
ionic bond - correct answer. a chemical bond resulting from the attraction between
oppositely charged ions
nonpolar covalent - correct answer. Bond formed when electron pairs are shared
equally between atoms.
polar covalent - correct answer. a type of bond that forms when electrons are not
shared equally
hydrogen bonds - correct answer. very weak bonds; occurs when a hydrogen atom in
one molecule is attracted to the electrostatic atom in another molecule
adhesion - correct answer. the clinging of 1 substance to another by means of
hydrogen bonds
, cohesion - correct answer. tendency of molecules of the same kind to stick to one
another
surface tension - correct answer. A measure of how difficult it is to stretch or break the
surface of a liquid. Water has a high surface tension because of the hydrogen bonding
of surface molecules.
solute - correct answer. the dissolved substance in a solution
solution - correct answer. a homogeneous mixture of two or more substances
solvent - correct answer. a liquid substance capable of dissolving other substances
acid - correct answer. compound that donates H+ ions to an aqueous solution and
measures less than 7 on the pH scale
base - correct answer. any substance that forms hydroxide ions in water and has a pH
above 7
ph - correct answer. A measure of hydrogen ion concentration equal to -log [H+] and
ranging in value from 0 to 14.
4 classes of macromolecules - correct answer. A. Carbohydrates. B. Lipids. C.
Proteins. D. Nucleic Acids.
dehydration synthesis - correct answer. A chemical reaction in which two molecules
covalently bond to each other with the removal of a water molecule.
hydrolysis - correct answer. Breaking down complex molecules by the chemical
addition of water
proteins - correct answer. contains carbon, hydrogen, oxygen, and nitrogen. source of
energy. needed by tissue for repair and growth. made up of 20 amino acids.
carbohydrates - correct answer. compound made up of carbon, hydrogen, and oxygen
atoms; major source of energy for the human body
lipids - correct answer. biochemicals that do not dissolve in water (fats, oils, and
waxes) make up cell membranes, store energy
nucleic acids - correct answer. Polymers assembled from individual nucleotides; used
to store and transmit hereditary, or genetic, information; the two kinds of nucleic acids
are ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) (p. 47).
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