Bio 212: Exam 1 (Manz) Questions and
Answers Verified by Experts
What is the idea that all organisms are made of cells and that cells come from preexisting cells?
Cell theory
What is the substance made up of two or more atoms held together by covalent bonds?
Molecule
What is the number of protons in an element called? Atomic number
What is the number of protons & neutrons in an element called? Mass number
What is the mass number of the carbon isotope?
What is the atomic number of the carbon isotope?
What bond is formed when 2 atoms share one or more pairs of electrons? Covalent
, Bio 212: Exam 1 (Manz) Questions and
Answers Verified by Experts
What bond is formed when a weak interaction between 2 molecules resulting from an
electrostatic attraction between a proton in one molecule & an electronegative atom in the other?
Hydrogen
What bond is formed when an electron is completely transferred from one atom to another?
Ionic
List chemical bonds from strongest to weakest. Ionic, covalent, hydrogen
What is the measure of how strongly an atom pulls shared electrons toward itself in a bond?
Electronegativity
What covalent bond is formed when electrons are shared unequally between atoms differing in
electronegativity (results: one atom with partial negative charge & one atom with partial positive
charge)? Polar
What covalent bond is formed when electrons are equally shared between two atoms of the came
or similar electronegativity? Nonpolar
, Bio 212: Exam 1 (Manz) Questions and
Answers Verified by Experts
What is a small organic molecule with a central carbon atom bonded to an amino group (-NH3),
a carboxyl group (-COOH), a hydrogen atom, and a side-group called? Amino acid
What are amino acids called when they are linked together to form proteins? Residues
What is the term for any liquid in which one or more solids or gasses can dissolve?
Solvent
What is the term for any substance that is dissolved in a liquid called? Solute
What does "water-lover" mean? Hydrophilic
What does water afraid mean? Hydrophobic
Why is water such an effective solvent? Polar molecules
Answers Verified by Experts
What is the idea that all organisms are made of cells and that cells come from preexisting cells?
Cell theory
What is the substance made up of two or more atoms held together by covalent bonds?
Molecule
What is the number of protons in an element called? Atomic number
What is the number of protons & neutrons in an element called? Mass number
What is the mass number of the carbon isotope?
What is the atomic number of the carbon isotope?
What bond is formed when 2 atoms share one or more pairs of electrons? Covalent
, Bio 212: Exam 1 (Manz) Questions and
Answers Verified by Experts
What bond is formed when a weak interaction between 2 molecules resulting from an
electrostatic attraction between a proton in one molecule & an electronegative atom in the other?
Hydrogen
What bond is formed when an electron is completely transferred from one atom to another?
Ionic
List chemical bonds from strongest to weakest. Ionic, covalent, hydrogen
What is the measure of how strongly an atom pulls shared electrons toward itself in a bond?
Electronegativity
What covalent bond is formed when electrons are shared unequally between atoms differing in
electronegativity (results: one atom with partial negative charge & one atom with partial positive
charge)? Polar
What covalent bond is formed when electrons are equally shared between two atoms of the came
or similar electronegativity? Nonpolar
, Bio 212: Exam 1 (Manz) Questions and
Answers Verified by Experts
What is a small organic molecule with a central carbon atom bonded to an amino group (-NH3),
a carboxyl group (-COOH), a hydrogen atom, and a side-group called? Amino acid
What are amino acids called when they are linked together to form proteins? Residues
What is the term for any liquid in which one or more solids or gasses can dissolve?
Solvent
What is the term for any substance that is dissolved in a liquid called? Solute
What does "water-lover" mean? Hydrophilic
What does water afraid mean? Hydrophobic
Why is water such an effective solvent? Polar molecules
