Bio 211 chapter 2 Questions & answers
stimulus for vision
electromagnetic energy
body mass
body weight and body composition
Electrons
Negatively charged particles
Ions
positively and negatively charged atoms
Neutrons
the particles of the nucleus that have no charge
Carbohydrates
Broken down to glucose to provide energy.
,Chemical Mixtures
contain two or more distinct chemical components in either a heterogeneous or
homogeneous state
Chemical bond
the attractive force that holds atoms or ions together
Water bonds
polar covalent bonds
Single covalent bond
a bond formed when two atoms share a pair of electrons
double covalent bond
a bond in which two atoms share two pairs of electrons
triple covalent bond
a bond formed by sharing three pairs of electrons
, ionic bond
the attraction between oppositely charged ions
an atom that gains one or more electrons is the electron acceptor. It acquires a net
negative charge and is called an anion (an9i-on). The atom that loses electrons is the
electron donor. It acquires a
Factors that accelerate chemical reactions
catalysts
inorganic molecules
molecules that do not contain carbon
Polypeptide
A polymer (chain) of many amino acids linked together by peptide bonds.
polar molecule
molecule with an unequal distribution of charge, resulting in the molecule having a
positive end and a negative end
Salts
stimulus for vision
electromagnetic energy
body mass
body weight and body composition
Electrons
Negatively charged particles
Ions
positively and negatively charged atoms
Neutrons
the particles of the nucleus that have no charge
Carbohydrates
Broken down to glucose to provide energy.
,Chemical Mixtures
contain two or more distinct chemical components in either a heterogeneous or
homogeneous state
Chemical bond
the attractive force that holds atoms or ions together
Water bonds
polar covalent bonds
Single covalent bond
a bond formed when two atoms share a pair of electrons
double covalent bond
a bond in which two atoms share two pairs of electrons
triple covalent bond
a bond formed by sharing three pairs of electrons
, ionic bond
the attraction between oppositely charged ions
an atom that gains one or more electrons is the electron acceptor. It acquires a net
negative charge and is called an anion (an9i-on). The atom that loses electrons is the
electron donor. It acquires a
Factors that accelerate chemical reactions
catalysts
inorganic molecules
molecules that do not contain carbon
Polypeptide
A polymer (chain) of many amino acids linked together by peptide bonds.
polar molecule
molecule with an unequal distribution of charge, resulting in the molecule having a
positive end and a negative end
Salts
