CHAPTER 5 - CELL STRUCTURE AND FUNCTION

CHAPTER 5 - CELL STRUCTURE AND FUNCTION - • Processes...

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All living things are composed of one or more cells The cell is the smallest unit with properties of life Cells come from pre-existing cells Cell Theory Plasma Membrane DNA - hereditary Cytoplasm Metabolism Cells are small Basic Features of All Cells Small, 1-5 micrometers No membrane bound organelles No nucleus DNA in circular loop (no proteins) Bacteria and Archaea Prokaryotic Cells Larger, 8-100 micrometers Membrane bound organelles Nucleus DNA in linear chromosomes (has proteins) Single celled protists Multi-celled animals, plants, fungi Eukaryotic Cells The Nucleus: chromatin threads (chromosomes), nucleolus, nuclear envelopes, pores Protein synthesis Made of RNA and protein Free - by cytoplasm or attached to ER Ribosomes ER, Golgi complex, vesicles Series of membranes within cells Endomembrane System Rough - makes proteins Smooth - makes lipids, detoxifies Endoplasmic Reticulum
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Unformatted text preview: • Processes proteins and lipids from ER ○ Packages and ships to final destination ○ Golgi (Post Office) • Food - temporary, formed phagocytosis ○ Contractile - remove extra water (protists) ○ Central - in plants, water regulation ○ Vacuoles • Mitochondria - produce ATP • Chloroplast - used for photosynthesis; live in plastids; contain 3 membranes • Chloroplasts - photosynthesis Chromoplasts - pigments Amyloplasts - starch In plants ○ Plastids • CHAPTER 5 - CELL STRUCTURE AND FUNCTION CHAPTER 5 Page 1 Cytoskeleton - 2 parts breakdown and reassemble; one part stays the same (Figure 5-16) • Extensions of Plasma Membrane ○ Cilia: short and many Flagella: longer and few Moves cell or fluid ○ 9+2 arrangement: 9 pairs in periphery, 2 singles in center Filled with microtubules ○ Cilia and Flagella • CHAPTER 5 Page 2...
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CHAPTER 5 - CELL STRUCTURE AND FUNCTION - • Processes...

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