anatomy

Maia Regman Mrs. Magnan Biology Honors 28 October 2013 Plant and Animal Cells Objective The objective of this lab was to learn what a microscope reveals about plant and animal cells. The completion of this lab should teach the participant the differences between plant and animal cells and how to examine samples of the covering tissues of a plant (the onion) and of an animal (the participant) using the epidermis and cells from a cheek swab of epithelial tissue. Materials Packet Pages L14 to L16 Onion Chunks Compound Microscope Microscope Slides Covers Slips Water Pipette Lugol?s Iodine Solution Tweezers (optional) Paper Towels Flat Toothpicks Procedures. Part A: Cells of the Onion Epidermis Gently peel off one of the thin layers of the inside of the onion chunk.

Maia Regman Mrs. Magnan Biology Honors 5 May 2014 How Are Beards Linked to Evolutionary Sexual Selection? Studies have shown that beards are synonymous with maturity, masculinity and dominance. On the other hand, it has shown that despite those desirable qualities, the more beards there are, the less attractive they are. Once the number of men with beards is higher than those without, clean-shaven men are viewed as more attractive. The study also found that when the tables are turned, bearded men are seen as more attractive when they are the minority. The question is now why.