Hrincevich_CH_5_lecture_using_old_Starr_CH_4_as_basis

Hrincevich_CH_5_lecture_using_old_Starr_CH_4_as_basis -...

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Unformatted text preview: Cell Structure and Function Chapter 5 Mid 1600s - Robert Hooke observed and described cork cells Late 1600s - Antony van Leeuwenhoek observed sperm, microorganisms 1820s - Robert Brown observed and named nucleus in plant cells Early Discoveries Cell Theory (several individuals contributed) 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 Smallest unit of life Can survive on its own or has potential to do so Highly organized for metabolism Senses and responds to environment Has potential to reproduce Cell frog embryo most eukaryotic cells mitochondrion most bacteria virus proteins diameter of DNA double helix chicken egg adult human tallest trees atoms 1 centimeter (cm) = 1/100 m 1 millimeter (mm) = 1/1000 m Units of measurement: 1 meter (m) = 39.37 inches Diameter visible with conventional electron microscope visible with special electron microscopes visible with llight microscope visible with unaided human eye 1 micrometer (m) = 1/1,000,000 m 1 nanometer (nm) = 1/1,000,000,000 m 100 m 10 m 1 m 100 nm 10 nm 1 nm 0.1 nm 1 mm 1 cm 10 cm 100 m 10 m 1 m frog embryo chicken egg adult human tallest trees Diameter visible with unaided human eye 1 mm 1 cm 10 cm 100 m 10 m 1 m visible with light microscope most eukaryotic cells mitochondrion most bacteria virus proteins diameter of DNA double helix atoms 1 centimeter (cm) = 1/100 m 1 millimeter (mm) = 1/1000 m Units of measurement: 1 meter (m) = 39.37 inches visible with conventional electron microscope visible with special electron microscopes visible with llight microscope 1 micrometer (m) = 1/1,000,000 m 1 nanometer (nm) = 1/1,000,000,000 m 100 m 10 m 1 m 100 nm 10 nm 1 nm 0.1 nm Structure of Cells...
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Hrincevich_CH_5_lecture_using_old_Starr_CH_4_as_basis -...

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