NLN NEX ACTUAL EXAM QUESTIONS AND
COMPLETE STUDY GUIDE 2026
▶ Organ System. Answer: made up of a number of organs working
together to carry out a major function.
▶ Organism. Answer: The highest level of organization, such as the
human body.
▶ Active transport. Answer: involves the use of energy in the form of ATP
to move substances across the membrane.
▶ Passive Transport. Answer: does not require energy and uses diffusion
and filtration.
▶ Facilitated diffusion.. Answer: Form of passive transport that involves
the use of membrane proteins.
▶ Diffusion. Answer: Particles move randomly, spreading evenly
throughout an available space and moving from regions of high to low
concentrations
▶ Osmosis. Answer: Water moves from an area of high-water
concentration to an area of low-water concentration
▶ Isotonic. Answer: When the solute concentration of the water is the
same as that inside the cell. The amount of water that leaves the cell and
the amount that enters it are equal
▶ Hypertonic. Answer: When the solute is more concentrated outside the
cell than inside it. The cell shrinks.
▶ Hypotonic. Answer: The solute concentration is less concentrated
outside the cell than inside it. The cell expands.
, ▶ Filtration. Answer: The movement of water and solutes through the
membrane by fluids or hydrostatic pressure.
▶ Natural Selection. Answer: Variations that give individuals an advantage
in the struggle for survival
▶ Adaptation. Answer: The individuals best suited to their environment
survive and pass on those traits to their offspring.
▶ Fossil Record. Answer: information about past life, including the
structure of organisms, what they ate, what ate them, in what environment
they lived, and the order in which they lived
▶ vertebrates. Answer: animals with backbones
▶ biogeography. Answer: the geographical distribution of plants and
animals
▶ comparative anatomy. Answer: the comparasion of organisms structure
▶ Evolution. Answer: Change in a kind of organism over time; process by
which modern organisms have descended from ancient organisms.
▶ Molecular biology. Answer: Biology at the molecular level.
▶ Taxonomy. Answer: The study of scientific classification
▶ kingdoms. Answer: Classifications of Living things.
▶ monera. Answer: bacteria
▶ Protists. Answer: protozoa, algae and some molds
▶ Fungi. Answer: molds, mushrooms, yeasts
▶ phylum. Answer: in classification, a group of closely related classes
▶ Genus. Answer: A group of similar species
COMPLETE STUDY GUIDE 2026
▶ Organ System. Answer: made up of a number of organs working
together to carry out a major function.
▶ Organism. Answer: The highest level of organization, such as the
human body.
▶ Active transport. Answer: involves the use of energy in the form of ATP
to move substances across the membrane.
▶ Passive Transport. Answer: does not require energy and uses diffusion
and filtration.
▶ Facilitated diffusion.. Answer: Form of passive transport that involves
the use of membrane proteins.
▶ Diffusion. Answer: Particles move randomly, spreading evenly
throughout an available space and moving from regions of high to low
concentrations
▶ Osmosis. Answer: Water moves from an area of high-water
concentration to an area of low-water concentration
▶ Isotonic. Answer: When the solute concentration of the water is the
same as that inside the cell. The amount of water that leaves the cell and
the amount that enters it are equal
▶ Hypertonic. Answer: When the solute is more concentrated outside the
cell than inside it. The cell shrinks.
▶ Hypotonic. Answer: The solute concentration is less concentrated
outside the cell than inside it. The cell expands.
, ▶ Filtration. Answer: The movement of water and solutes through the
membrane by fluids or hydrostatic pressure.
▶ Natural Selection. Answer: Variations that give individuals an advantage
in the struggle for survival
▶ Adaptation. Answer: The individuals best suited to their environment
survive and pass on those traits to their offspring.
▶ Fossil Record. Answer: information about past life, including the
structure of organisms, what they ate, what ate them, in what environment
they lived, and the order in which they lived
▶ vertebrates. Answer: animals with backbones
▶ biogeography. Answer: the geographical distribution of plants and
animals
▶ comparative anatomy. Answer: the comparasion of organisms structure
▶ Evolution. Answer: Change in a kind of organism over time; process by
which modern organisms have descended from ancient organisms.
▶ Molecular biology. Answer: Biology at the molecular level.
▶ Taxonomy. Answer: The study of scientific classification
▶ kingdoms. Answer: Classifications of Living things.
▶ monera. Answer: bacteria
▶ Protists. Answer: protozoa, algae and some molds
▶ Fungi. Answer: molds, mushrooms, yeasts
▶ phylum. Answer: in classification, a group of closely related classes
▶ Genus. Answer: A group of similar species
