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Cell Types and Cell Structure
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Review: The Cell Theory
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Prokaryotic An organism with a cell that
lacks internal structures surrounded by membranes. Single celled, bacteria LACKS A NUCLEUS BACTERIA
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Eukaryotic An organism that contains internal, membrane bound structures (ORGANELLES: a structure that carries out specific activities in the cell)
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Prokaryotic vs. Eukaryotic
nucleus membrane enclosed organelle chromosomes in pairs cell division by mitosis no nucleus no membrane enclosed organelles single chromosome cell division without mitosis
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Prokaryotic vs. Eukaryotic
Examples: Bacteria only Examples: Plant cells Animal cells Fungi Protists
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Prokaryote Coloring Worksheet
What bacteria causes strep throat? What are the oldest life forms on Earth? What type of bacteria causes food poisoning? What part of the bacteria cell helps it stick to surfaces? What does decompose mean? What is the control center of the bacteria cell? What part of the bacteria cell helps it move? Where do Archaebacteria live? To what kingdom to common bacteria belong?
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Worksheet with Venn Diagram!!!
Archaebacteria No Nucleus Eubacteria Fungi and Protists Cytoplasm DNA Ribosomes Plasma Membrane No organelles Always has a cell wall Plants and Animals May have a cell wall Nucleus Many organelles First cells to evolve More complex cells to evolve
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Cell Wall Found in plants, fungi, & bacteria
Made of cellulose in plants Made of peptidoglycan in bacteria Made of chitin in Fungi
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Centrioles Found only in animal cells Paired structures near nucleus
Made of bundle of microtubules Appear during cell division Help to pull chromosome pairs apart to opposite ends of the cell
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Chloroplasts Chloroplasts photosynthesis
1. Photosynthetic organelles in plant cells, containing the chlorophyll pigments Chloroplasts
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Plasma Membrane Plasma membrane (Cell Membrane) the bouncer
1. Surrounds Cells 2. Protected by cellulose and protein cell wall in plants Plasma Membrane
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Microtubules and Microfilaments
Microtubules and Microfilaments gives structure 1. Structural components of the cell (cytoskeleton) in eukaryotes Microtubules and Microfilaments
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Endoplasmic reticulum (ER)
Endoplasmic reticulum (ER) packager and distributes 1. Rough ER - Transport of proteins (roughness is the attached ribosomes) 2. Smooth ER – Processing and transport of lipids Endoplasmic reticulum (ER)
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Golgi Apparatus Golgi Apparatus (Golgi body, Golgi complex) the UPS
1. Assembly and editing of proteins Golgi Apparatus
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Lysosomes Lysosomes trash compactor
1. Contain enzymes that break down and help recycle large proteins in animal cells Lysosomes
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Mitochondria Mitochondria the ENERGY man makes ATP
1. Powerhouse ‑ site of ATP synthesis Mitochondria
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Nucleus Nucleus the brain 1. Membranous nuclear envelope
2. Chromosomes of DNA and protein (Histones) Nucleus
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Nucleolus Inside nucleus Cell may have 1 to 3 nucleoli Disappears when cell divides Makes ribosomes that make proteins copyright cmassengale
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The Control Organelle - Nucleus
Controls the normal activities of the cell Contains the DNA in chromosomes Bounded by a nuclear envelope (membrane) with pores Usually the largest organelle copyright cmassengale
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Nuclear Envelope Double membrane surrounding nucleus Also called nuclear membrane Contains nuclear pores for materials to enter & leave nucleus Connected to the rough ER Nuclear pores copyright cmassengale
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Inside the Nucleus - The genetic material (DNA) is found DNA is condensed & wrapped around proteins forming as CHROMOSOMES in dividing cells DNA is spread out And appears as CHROMATIN in non-dividing cells copyright cmassengale
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Cytoplasm Cytoplasm 1. Fluid (Cytosol) and organelles that make up
the inside of the cell Cytoplasm
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Ribosomes Ribosomes makes proteins 1. Attached to Rough ER
2. Site of protein synthesis Ribosomes
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Vacuoles Vacuoles: holds water
1. Large central vacuoles in plant cells contain enzymes and pigments in plant cells Vacuoles
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Flagella and Cilia Flagella and Cilia hairs
1. Cell surface projections for movement Flagella and Cilia
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Comparison: Plant cells Animal cells
No large, central vacuole No chloroplasts No rigid cell wall Lysosomes Centrioles Large, central vacuole Chloroplasts Rigid cell wall No Lysosome No centriole
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Cells come from other cells
Mr Parr Cellsalive.com
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