OSMOSIS EXPERIMENTS CONCLUSIONS

Question 1

Would the mass of potato cylinders in the distilled water increase or decrease?

Answer 1

Increase= there’s a GREATER CONC GRADIENT in this beaker=between the distilled water (HWP) and the potato cells (LWP)

Question 2

Explain what will happened to the potato cylinders in the distilled water?

Answer 2

More water molecules will move INTO the potato cell=

PUSHING the 𝙘𝙚𝙡𝙡 𝙢𝙚𝙢𝙗𝙧𝙖𝙣𝙚 AGAINST the CELL WALL =

𝗺𝗮𝗸𝗶𝗻𝗴 𝘁𝗵𝗲 cylinder 𝘁𝘂𝗿𝗴𝗶𝗱 (𝗳𝗲𝗲𝗹 𝗵𝗮𝗿𝗱)

Question 3

Would the mass of potato cylinders in the strongest sucrose solution increase or decrease?

Answer 3

The cylinders will decrease in mass

As there is a greater CONC GRADIENT between the potato (HWP) and the sucrose solution (LWP)

Question 4

EXPLAIN what will happened to the potato cylinders in the strongest sucrose solution?

Answer 4

More water will move OUT of the potato cells

Making them FLACCID (feel floppy)

UNDER MICROSCOPE might look plasmolysed,

Question 5

What does plasmolysed mean?

Answer 5

The cell membrane has pulled away from the cell wall

Question 6

Explain the results when the potato has not gained nor lost any mass.

Answer 6

There wasn’t ANY net movement of water INTO or OUT of the potato cells

=The solution the cylinder was in had the same solution found in the cytoplasm of the potato cells

NO CONC gradient