HUMAN BIOLOGY TEST EXAM 1 NEWEST
VERSION 2026 2027 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS GRADED A+
Biology is the study of
life
dorsal cavity
includes the cranial and spinal cavities.
Distal
Farther from the trunk of the body
,lateral/frontal plane
the plane that divides the body from front to back
Medial
Toward the midline of the body
Proximal
Nearer to the trunk of the body
Homeostasis
process by which organisms maintain a relatively stable internal
environment despite changes to the external environment
,atomic number
the number of protons in an atom
mass number (atomic mass)
number of protons plus the number of neutrons in an atom of
an element
Isotope
Atoms of the same element that have different numbers of
neutrons (different atomic mass)
Electrolytes (ions)
Electrically charged salts that are primarily involved with
extracellular water.
Enzymes
, proteins that act as biological catalysts
How do enzymes work?
speed up reactions by lowering activation energy
active transport
the movement of materials through a cell membrane using
energy
passive transport
the movement of substances across a cell membrane without
the use of energy by the cell
Diffusion
the process by which molecules move from an area of higher
concentration to an area of lower concentration
VERSION 2026 2027 WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS GRADED A+
Biology is the study of
life
dorsal cavity
includes the cranial and spinal cavities.
Distal
Farther from the trunk of the body
,lateral/frontal plane
the plane that divides the body from front to back
Medial
Toward the midline of the body
Proximal
Nearer to the trunk of the body
Homeostasis
process by which organisms maintain a relatively stable internal
environment despite changes to the external environment
,atomic number
the number of protons in an atom
mass number (atomic mass)
number of protons plus the number of neutrons in an atom of
an element
Isotope
Atoms of the same element that have different numbers of
neutrons (different atomic mass)
Electrolytes (ions)
Electrically charged salts that are primarily involved with
extracellular water.
Enzymes
, proteins that act as biological catalysts
How do enzymes work?
speed up reactions by lowering activation energy
active transport
the movement of materials through a cell membrane using
energy
passive transport
the movement of substances across a cell membrane without
the use of energy by the cell
Diffusion
the process by which molecules move from an area of higher
concentration to an area of lower concentration
