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Virtual Lab – Operation of Bright Field Microscope How does changing light intensity affect the contrast of an image in a microscope?

Virtual Lab – Osmosis – Tonicity in Elodea Cells (Plant Cells) When solute concentration is lower in an environment compared to the other side of the membrane, it is known as a _____________ environment.

Virtual Lab – Diffusion Across a Selective Permeable Membrane How do we test for the presence of starch using iodine (IKI)?

Virtual Lab – Microscopy – Plant Cells (Onion Epidermal Cells) Follow the steps provided in the reading section of this study guide for assistance to calculate the estimated width (in

Virtual Lab – Operation of Bright Field Microscope What is the difference between resolution and contrast?

Virtual Lab – Operation of Bright Field Microscope What is the relationship between objective, magnification power and the field of view?

Dialysis tubing is a selectively permeable membrane made with the macromolecule, cellulose. Starch, glucose, water and the IKI reagent arecontained within the dialysis membrane in solution B shown below. Solution A in the beaker, at the start of the experiment in panel (a) contains just water. Diffusion of these molecules occurs, over time, from panels (a)-(c). The only selective criterion for diffusion across a dialysis membrane is the size of the molecule. Which of these molecules will diffuse the fastest? 

Virtual Lab – Diffusion Across a Selective Permeable Membrane Diffusion is a passive process that moves substances from an area of [word1] concentration to an area of [word2] concentration.

Virtual Lab – Microscopy – Wet Mount (Euglena) What organelle assists the Euglena in osmoregulation?

Virtual Lab – Osmosis – Tonicity in Red Blood Cells (Animal Cells) Which osmotic conditions will result in cloudy blood solutions? Why?