Author: Anonymous

Virtual Lab – Microscopy – Wet Mount (Euglena) In a wet mount preparation: The glass piece that forms the base is called the cover slip. The glass that covers the top of the specimen is called the slide.

Virtual Lab – Osmosis – Tonicity in Red Blood Cells (Animal Cells) One major structural difference between animal cells and plant cells is that plant cells have a rigid cell wall made of cellulose.

Virtual Lab – Operation of Bright Field Microscope The field of view (FOV) refers to the extent of the observable area that is visible through a microscope. It is the radius of the area you can see when you look through the lens or viewfinder.

Virtual Lab – Osmosis – Tonicity in Red Blood Cells (Animal Cells) In an isotonic environment blood cells maintain their normal, biconcave disc shape. This is due to the loss of water from the cells into the surrounding solution, causing the cells to become smaller and more irregular in shape. In a hypertonic environment blood cells undergo crenation, where they appear shrunken and spiky. There is no net movement of water into or out of the cells, so they retain their usual structure.

Virtual Lab – Operation of Bright Field Microscope What is the total magnification of the observed objects in a microscope that is using the 40X objective lens?

Virtual Lab – Osmosis – Tonicity in Elodea Cells (Plant Cells) Plant cells do not “diminish” in overall size when they lose water due to the presence of a rigid vacuole. 

Virtual Lab – Osmosis – Tonicity in Elodea Cells (Plant Cells) Name three different osmotic environments: [word1], [word2], and [word3] solutions.

Virtual Lab – Microscopy – Animal Cells (Human Epidermal Cells) Locating cheek cells is easier at a lower power objective because it provides a larger field of view, meaning you can see more of the sample at once. This makes it easier to scan a broader area and locate the cells.

Virtual Lab – Osmosis – Tonicity in Elodea Cells (Plant Cells) When the solute concentration is greater on one side of the membrane, the environment with the greater solute concentration is known as the _____________________ environment.

Virtual Lab – Osmosis – Tonicity in Red Blood Cells (Animal Cells) Normal red blood cells have a solute concentration of 1%. When the environment contains 1% solute, the cell is in an isotonic environment. When the environment contains a solute concentration greater than 1%, the cell is hypotonic compared to the environment (the environment is hypertonic).