BIOL110s05-09 - BIOL 110: Principles of Biology Spring 2005...

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1 BIOL 110 : Principles of Biology Spring 2005 Lecture 9, M 2/7/05 Dr. Nathan Staples (Ph.D., UCSB 2002) http://www.smccd.net/accounts/staplesn/biol110/ Midterm #1: Friday, 2/11. (Ch. 1-3) –Study/Review Sheets are available. Extra Office Hours : Wed. 12-3:30pm • Review session Wed. in 16-212 if many show up!! – 12:30-2pm?? Or 2pm-3:30?? Etc… • Bring Questions!!! REVIEW: Ch. 2: The Molecules of Life – chemistry – Organic molecules: Macromolecules – – lipids, proteins, nucleic acids. [= All the BUILDING BLOCKS of life!!….] Ch. 3: How Cells Are Put Together – Cell Structure TODAY: Ch. 3: How Cells Are Put Together – Cell Structure – Cell Theory – Cell Membranes – Prok. vs. Euk Cells – Euk. Organelles (membrane-bound) • Nucleus, ER, Golgi, Mitochondria, Chloroplasts
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2 Cell Theory (Virchow, Schleiden, Schwann) 1) Every organism is composed of one or more cells 2) Cell is smallest unit having properties of life 3) Continuity of life arises from growth and division of single cells Cells arise only from preexisting cells 1. Smallest unit of life 2. Can survive on its own or has potential to do so 3. Is highly organized for metabolism 4. Senses and responds to environment 5. Has potential to reproduce ….. I. Cell
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3 Structure of Cells All start out life with: 1. Plasma membrane 2. Region where DNA is stored 3. Cytoplasm Two types: Prokaryotic Eukaryotic Why Are Cells So Small?
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BIOL110s05-09 - BIOL 110: Principles of Biology Spring 2005...

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