CHAPTER 2 ANATOMY AND
PHYSIOLOGY (MCGRAW HILL)
WITH ACCURATE ANSWERS
GRADED A+ 2026 VERSION!!
biochemistry - answer-the study of the molecules that compose living organisms -
especially molecules unique to living things, such as carbohydrates, fats, proteins, and
nucleic acid
Element - answer-the simplest form of matter that has a unique set of chemical
properties
Minerals - answer-inorganic elements extracted from the soil by plants and passed up
the food chain to humans and other organisms
trace elements - answer-An element indispensable for life but required in extremely
minute amounts.
atomic number - answer-the number of protons in the nucleus of an atom
Atoms - answer-smallest unit of matter
Protons - answer-Positively charged particles
Neutrons - answer-the particles of the nucleus that have no charge
Electrons - answer-Negatively charged particles
, Isotopes - answer-Atoms with the same number of protons but different numbers of
neutrons
atomic weight - answer-the total number of protons and neutrons in the nucleus of an
atom
Radioisotopes - answer-unstable isotopes
Radioactivity - answer-the process of decay of radioisotopes
ionizing radiation - answer-high energy radiation that ejects electrons from atoms,
converting atoms to ions
physical half-life - answer-the time required for 50% of a radioisotopes atoms to decay
to a more stable state
biological half life - answer-the time required for half of a radioisotope to disappear from
the body
ions - answer-charged particles with unequal numbers of protons and electrons
Ionization - answer-the process of adding or removing electrons from an atom or
molecule, which gives the atom or molecule a net charge
Anion - answer-A negatively charged ion
Cation - answer-A positively charged ion
electrolytes - answer-substances that ionize in water, (acids, bases, or salts) and form
Solutions capable of conducting electricity
PHYSIOLOGY (MCGRAW HILL)
WITH ACCURATE ANSWERS
GRADED A+ 2026 VERSION!!
biochemistry - answer-the study of the molecules that compose living organisms -
especially molecules unique to living things, such as carbohydrates, fats, proteins, and
nucleic acid
Element - answer-the simplest form of matter that has a unique set of chemical
properties
Minerals - answer-inorganic elements extracted from the soil by plants and passed up
the food chain to humans and other organisms
trace elements - answer-An element indispensable for life but required in extremely
minute amounts.
atomic number - answer-the number of protons in the nucleus of an atom
Atoms - answer-smallest unit of matter
Protons - answer-Positively charged particles
Neutrons - answer-the particles of the nucleus that have no charge
Electrons - answer-Negatively charged particles
, Isotopes - answer-Atoms with the same number of protons but different numbers of
neutrons
atomic weight - answer-the total number of protons and neutrons in the nucleus of an
atom
Radioisotopes - answer-unstable isotopes
Radioactivity - answer-the process of decay of radioisotopes
ionizing radiation - answer-high energy radiation that ejects electrons from atoms,
converting atoms to ions
physical half-life - answer-the time required for 50% of a radioisotopes atoms to decay
to a more stable state
biological half life - answer-the time required for half of a radioisotope to disappear from
the body
ions - answer-charged particles with unequal numbers of protons and electrons
Ionization - answer-the process of adding or removing electrons from an atom or
molecule, which gives the atom or molecule a net charge
Anion - answer-A negatively charged ion
Cation - answer-A positively charged ion
electrolytes - answer-substances that ionize in water, (acids, bases, or salts) and form
Solutions capable of conducting electricity
