PAX NLN Nursing/Ecology/Osmosis
Exam Prep Questions & Answers 2024
The plasma membrane controls entry to and exit from the cell by means of either passive or active
mechanisms. True or false: - ANSWERSTrue
Active transport - ANSWERSinvolves the use of energy in the form or ATP to move substances across the
membrane.
Passive transport - ANSWERSdoes not require energy and makes use of diffusion and filtration.
Diffusion - ANSWERSparticles move in a random manner, spreading evenly throughout an available space
and moving from regions of high concentration to those of low concentration.
a specific type of diffusion is that of water, or _______ - ANSWERSosmosis
Osmosis - ANSWERSdiffusion of water, water moves from an area of high water concentration (low
particle), to an area of low water concentration (high particle)
Isotonic - ANSWERSwhen the concentration of two solutions is the same (water is the same as inside the
cell)
Hypertonic - ANSWERSwhen the solute is more concentrated outside the cell than inside.
water leaves the cell Due to osmosis: from high water/low particle to low water/high particle.. as a
result: - ANSWERSthe cell shrinks
Hypotonic - ANSWERSthe solute concentration outside the cell is lower than that inside the cell.
Exam Prep Questions & Answers 2024
The plasma membrane controls entry to and exit from the cell by means of either passive or active
mechanisms. True or false: - ANSWERSTrue
Active transport - ANSWERSinvolves the use of energy in the form or ATP to move substances across the
membrane.
Passive transport - ANSWERSdoes not require energy and makes use of diffusion and filtration.
Diffusion - ANSWERSparticles move in a random manner, spreading evenly throughout an available space
and moving from regions of high concentration to those of low concentration.
a specific type of diffusion is that of water, or _______ - ANSWERSosmosis
Osmosis - ANSWERSdiffusion of water, water moves from an area of high water concentration (low
particle), to an area of low water concentration (high particle)
Isotonic - ANSWERSwhen the concentration of two solutions is the same (water is the same as inside the
cell)
Hypertonic - ANSWERSwhen the solute is more concentrated outside the cell than inside.
water leaves the cell Due to osmosis: from high water/low particle to low water/high particle.. as a
result: - ANSWERSthe cell shrinks
Hypotonic - ANSWERSthe solute concentration outside the cell is lower than that inside the cell.
