Effects of Salt Solutions on Cells

The video tutorial demonstrates an osmosis experiment using Elodia, an aquatic plant. The instructor sets up a slide with a leaf and DI water, observes it under a microscope, and then adds a 5% salt solution. The effects of osmosis are observed as chloroplasts clump due to water moving out of the cells. The tutorial concludes with a summary of the osmosis process and its impact on Elodia cells.

What type of plant is Elodia?

• Tropical plant

• Mountain plant

• Aquatic plant

• Desert plant

What is the purpose of using DI water in the experiment?

• To stain the cells

• To provide nutrients

• To observe the cells in pure water

• To dissolve the leaf

Which tool is used for fine adjustment of the microscope focus?

• Stage control

• Large focus knob

• Fine adjustment knob

• Light intensity knob

What are the green blobs observed in the Elodia cells?

• Mitochondria

• Vacuoles

• Chloroplasts

• Nuclei

How is the 5% salt solution added to the slide without removing it from the microscope?

• By lifting the cover slip

• By using a dropper bottle and chem wipe

• By tilting the microscope

• By using a pipette

What happens to the chloroplasts when the 5% salt solution is added?

• They dissolve

• They move faster

• They start to clump

• They disappear

What is the effect of the 10% salt solution on the Elodia cells?

• Cells grow larger

• Chloroplasts multiply

• Cell membrane shrinks

• Cells burst

Why does the cell membrane shrink when exposed to a 10% salt solution?

• Water enters the cell

• Salt enters the cell

• Salt leaves the cell

• Water leaves the cell

What is observed in the cells after adding the 10% salt solution?

• Chloroplasts are clumped together

• Cells are unchanged

• Chloroplasts are evenly distributed

• Cells are larger

What is the main reason for the changes observed in the Elodia cells when salt solutions are added?

• Osmosis

• Diffusion

• Active transport

• Photosynthesis