LAB 15 - Ynés Mexía b. 1870 PLANT COLLECTION/IDENTIFICATION A SCIENCE COMMUNICATOR Although Ynés Mexía was so busy collecting plants that she never finished her college degree, she gathered almost 150,000 species. In thirteen short years, Ynés discovered 500 new plant species and 2 new genera. Between expeditions, she gave lectures in San Francisco, sharing photographs of her journeys and teaching people about plants. Ynés suffered from prejudice because of her Mexican heritage, her age, and her gender, but everyone who knew her said that she was friendly, unassuming, and tough. She died in 1938 in Berkeley, California. PLANT COLLECTION/IDENTIFICATION Ynés Mexía had a taste for adventure, braving earthquakes and poisonous berries to track down undiscovered plant species. You can get a taste of Mexía’s passion for botany by gathering leaves and blossoms in your neighborhood or favorite park. This lab teaches you how to press and label plants to create an impressive collection of your own. THE BIOLOGY BEHIND THE FUN Preserved plant specimens, such as those collected by Ynés Mexía, provide scientists with important information about plant diversity and distribution. Plants which have been dried correctly can last for hundreds of years. A collection of plant specimens and the recorded data about each plant is called a herbarium. LAB 17 Ernest Everett Just b. 1883 CELL PHYSIOLOGY A PROFESSOR All of Ernest’s hard work paid off, and when he graduated from college, he became an English professor and then a biology professor at Howard University, where he also helped establish a college drama club. In the summers, he did marine biology research on the coast of Massachusetts, where he meticulously studied the eggs of sea creatures including sea urchins, sand dollars, and sand worms. He focused on cell physiology (how cells function) and carefully observed how the eggs changed during fertilization and development, publishing papers on his work in English and German. CELL PHYSIOLOGY Ernest Everett Just was interested in cell biology, including how water moves in and out of cells. In this lab you’ll dissolve the shells of raw eggs in vinegar and soak them in corn syrup or water to make them swell or shrivel up. THE BIOLOGY BEHIND THE FUN Chicken eggs are incubators for growing chicks. The egg white is made up of proteins and water, while the yolk contains nutrients for a growing chick and an ovum, or unfertilized egg cell. If the egg is fertilized, the ovum will divide into more cells and become an embryo. LAB 23 Patricia Bath b. 1942 MEDICAL DEVICES/CATARACT SURGERY AN OPHTHALMOLOGIST When Patricia Bath, now Dr. Bath, returned home to work at Harlem Hospital, she noticed there were more blind patients there than at a neighboring hospital where she also worked. She continued her education, doing a residency to become an ophthalmologist, which is an expert in eyes and vision. When Dr. Bath’s research demonstrated that certain groups of people suffered from more eye problems than others, she wanted to understand why and help address the problem. She set up an eye clinic at Harlem Hospital Center, where they started doing eye surgeries. In 1972, Patricia got married and had a daughter named Eraka. MEDICAL DEVICES/CATARACT SURGERY Dr. Patricia Bath improved the lives of countless people with her inventions, such as medical devices for cataract surgery. Make binoculars with waxed paper lenses to experience for yourself how cataracts interfere with vision. See how replacing the cloudy lenses with a clear ones improves your sight. THE BIOLOGY BEHIND THE FUN The lens in each of your eyes is suspended just behind the iris, which is the colorful part of your eye controlling the size of your pupil. Because it is a clear structure that focuses light onto the back of your eye to form images, a transparent lens is essential to good vision. Natural ocular (eye) lenses are made up of proteins and water.
✔ Author(s): Liz Lee Heinecke,Kelly Anne Dalton
✔ Title: The Kitchen Pantry Scientist Biology for Kids: Science Experiments and Activities Inspired by Awesome Biologists, Past and Present; with 25 ... (Volume 2) (The Kitchen Pantry Scientist, 2)
✔ Rating : 4.9 out of 5 base on (58 reviews)
✔ ISBN-10: 1631598325
✔ Language: English
✔ Format ebook: PDF, EPUB, Kindle, Audio, HTML and MOBI
✔ Device compatibles: Android, iOS, PC and Amazon Kindle
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