2_Cells_10 - BIOL 103 Human Biology Lectures Lecture...

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Unformatted text preview: BIOL 103 Human Biology Lectures Lecture materials are available at the following internet address: mycourses.geneseo.edu Click on: 201001-BIOL-103-01: Human Biology-Lec OR 201002-BIOL-103-02: Human Biology-Lec Course Materials Introduction and Organization Need help? Contact mycourses.geneseo.edu Testing your knowledge of the Concepts Page 18 (Chapter 1): Questions: 13-17 Page 63-64 (Ch. 3): Questions: 13-17, 22-24, 26, 27 Answers: Pages A-2 & A-3 Supplemental Instruction Review Sessions Tuesday , Jan. 26, 7-8pm - Milne 109 Joanne Thursday , Jan. 28, 7-8pm - Milne 105 Gauri Sunday , Jan. 31, 6-7pm - Milne 109 Joanne & Gauri BIOL 103 01 BIOL 103 02 11.2% 8.2% Treeman (HPV/warts) • http://www.youtube.com/watch? v=DStwXsmZ3OE warts Haemangioma – huge weeping facial tumor living cell No membrane around nucleus. Membrane around nucleus. Eukaryotic animal cell Page 48 in Mader Cells • Why study cells? – Cells are the foundation for understanding the multi cellular body Cell theory -- basic biological concept, i.e., all life occurs in cells and all cells come from pre-existing cells Homeostatic mechanisms, which regulate our internal environment, depend on cells • Homeostasis is disrupted by – El Tor, a cholera exotoxin, from Vibrio cholerae – it causes a loss of water from cells by osmosis- massive, exhaustive diarrhea Vibrio cholerae Pathology = study of diseased cells • R ed b lood c ell (RBC) counts help diagnose anemia. • W hite b lood c ell (WBC) counts help diagnose allergies, infections, parasites, etc. RBC WBC RBC Pathology (cont.) Pap smear -- an examination of cells from the opening of the cervix (neck) of uterus. (neck) ___________ Pathology (cont.) • Biopsy -- taking group of cells (a piece of tissue) from the body. – Done for He nrietta La cks in 1951. Cervical cancer cells were removed and cultured. – HeLa cells are alive today and most studied in the history of science Cell size and shape • 50 WBCs, side-by-side are the width of a period. • One human ovum can be seen with the unaided eye. Chicken egg? • Nerve cells: some with extensions over a meter long. RBC egg chicken egg? Different cells egg fat cell smooth muscle cell neuron in brain sperm intestinal cells bone cell blood cells Generalized cell • Generalized cell is examined to see what all cells have in common...
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This note was uploaded on 05/14/2010 for the course BIOL 103 taught by Professor Spidka during the Spring '10 term at SUNY Geneseo.

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2_Cells_10 - BIOL 103 Human Biology Lectures Lecture...

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