Question

A wet-mount slide of red onion cells is studied using a compound light microscope. A drawing of one of the cells as seen under high power is shown below.
Part A: In the space below, identify the name of each structure, A, B, and C. Use the terms listed as a word bank. (2 points)

Part B: A highly concentrated salt solution has been added to the slide that this plant cell is on. Explain, in detail, what you would expect to see happening to the plant cell as a result. (2 points)

Answer 1

Answer:

Part A: A= cytoplasm, B= cell wall and C= cell membrane.

Part B under this condition we expected to see the phenomena called plasmolysis.

Explanation:

Eukaryotic cells consist on a cytoplasm (internal medium) which contains different organelles. Covering the cytoplasm we found a first thin layer called cell membrane and an external rigid layer called cell wall.

When a cell is subjected to a media with a salt concentration higher than salt concentration inside the cell (hypertonic media), water inside the vacuole (an organelle that constitues almost 90 % of cell volume and contains water) tends to move out of the cell in response to concentration gradient. This phenomena is called plasmolysis and is possible because of permeability characteristics of cell membrane and cell wall.

Answer 2

Part A:A = cytoplasmB = cell membraneC= cell wall
Part B: When a highly concentrate salt solution has been added to the slide that the plant cell is on, plasmolysis will take place. Plasmolysis is the shrinking of the cytoplasm of a plant cell in response to diffusion of water out of the cell and into high salt concentration solutions.

Hope this helps you! (:
-PsychoChicken4040