Question

passive cellular transport assignment - teacher edition
i. modified true or false
five sets of two statements (x and y) are written below. decide whether these statements are true or false. select your answer based on the following options.
a. both statement x and statement y are true
b. both statement x and statement y are false.
c. statement x is true but statement y is false
d. statement x is false but statement y is true.
b 1 x - in a hypertonic solution, the water concentration inside and outside the cell is the same
y - a hypertonic solution would cause an animal cell to burst.
a 2 x - osmosis is a form of diffusion involving water
y - the cell membrane is partially permeable to water

1. x - diffusion occurs because particles are always at rest.

y - the total dispersion of particles in a solution is called its net movement.

1. x - facilitated diffusion involves the use of proteins embedded in the cell membrane

y - glucose is transported inside the cell through simple diffusion.

1. x - an animal cell in an isotonic solution will eventually die

y - an animal cell in a hypotonic solution will eventually die.

Explanation:

1. In a hypertonic solution, water concentration outside the cell is lower than inside, and an animal cell will shrink, not burst. So both X and Y are false.
2. Osmosis is water - diffusion across a semi - permeable membrane, and the cell membrane is partially permeable to water. Both X and Y are true.
3. Diffusion occurs because particles are in constant motion, and net movement is the overall direction of particle movement, not total dispersion. Both X and Y are false.
4. Facilitated diffusion uses membrane - embedded proteins, and glucose is transported by facilitated diffusion, not simple diffusion. X is true, Y is false.
5. An animal cell in an isotonic solution remains in a stable state and doesn't necessarily die, while in a hypotonic solution, it may burst but not always die immediately. Both X and Y are false.

Answer:

1. B
2. A
3. B
4. C
5. B