Tag: inter cellular movement

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Questions Related to inter cellular movement

Multiple choice biology movement in and out of the cell diffusion across cells diffusion and osmosis inter cellular movement

Why does the skin of your finger shrink, when you wash clothes for a long time?

  1. Soap is hypotonic, so water is moved out of finger by osmosis.

  2. Soap is hypertonic, so water is moved out of finger by osmosis.

  3. Soap is isotonic, so water is moved into finger by osmosis.

  4. Finger skin is very tender.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Soap contains a lot of solutes. Hence, when washing clothes, solute concentration is more in soap water than in cells of hand. Due to this, the water molecules present in cells of hand move out in soap solution. 
  • This is an osmotic process in which the water molecules move from lower solute concentration to higher solute concentration, i.e., from dilute solutions to concentrated solution through a semi-permeable membrane. Soap is a hypertonic solution with high amounts of salts. 
Multiple choice biology movement in and out of the cell diffusion across cells diffusion and osmosis inter cellular movement

When a cell is placed in a hypertonic solution:

  1. solute exits the cell to equalize the concentration on both sides of the membrane

  2. water exits the cell toward the area of lower solute concentration

  3. water exits the cell toward the area of higher solute concentration

  4. solute exits and water enters the cell
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A hypertonic solution is a solution which has higher osmotic pressure i.e; having more solute concentration outside the cell than inside. When a cell is placed in a hypertonic solution, the water moves to the surrounding from inside the cell as it moves from higher water concentration to lower water concentration.

So, the correct option is 'water exits and solute enters the cell'.

Multiple choice biology movement in and out of the cell diffusion across cells diffusion and osmosis inter cellular movement

When Amoeba is placed in a hypertonic medium, it 

  1. Shrinks

  2. Swells

  3. Bursts

  4. No change
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If Amoeba is kept in a hypertonic solution, then exosmosis occurs in which, the water molecules move from inside of the cell to outside of the cell through the cell membrane and thus, Amoeba will shrink because water moves from the region of higher concentration to the region of lower concentration region.