Osmosis and Simple Diffusion

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Study guide questions: Movements through membrances
1.Prepare a graph that illustrate the diffusion distance of potassium in 10 minutes 2.Explain your graph :

3.Define simple diffusion:
4.Define osmosis: Osmosis can be defined as the movement of solvent molecules across a semipermeable or selectively permeable membrane ,from a region of lower concentration of the solute to that of a higher concentration till equilibrium is attained.

5.What is the change in the level of molasses in 10 minutes? 6.What is the change in the level of molasses in 30 minutes?

7.What force is responsible for the movement of substances through the filter paper? The filtration by the fiter paper is done by the volume and the surface 8.What substance did not pass through the filter paper

9.What factor prevented these substances from passing through 10.Define filtration
11.Which stage (phase) of the cell cycle was the most numerous in the blastula? Explain your answer 12.In what ways are the new cells (daughter cells), which result from a cell cycle similar? 13.How does the new cell slightly differ?

14.Abdominal impact injuries often involve the spleen. Explain the structural tissue characteristics that make the spleen so vulnerable to serious injury. 15.Explain the advantage for melanin granules being located in the deep layer of the epidermis 16.Explain how a hair is formed?

17.What cells produce the pigment in hair?
18.Distinguish the locations and tissues among epidermis, dermis, and subcutaneous layer 19.How do the cells of stratum corneum and stratum basale differ? 20.What part of hair extends from the hair papilla to the body surface 21.In which layer of skin are sebaceous glands found

22.How are sebaceous gland associated with hair follicles
23.In what layer of skin are sweat glands usually located
24.Explain how bone cells embedded in solid ground substance obtain nutrients and eliminate wastes. By answering yes or no, indicate which...
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