life of science - DAY 1 ● What characteristics are shared...

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DAY 1: What characteristics are shared by living organisms? Organization Cells The smallest unit of life is composed of molecules Molecules - cells - tissues - organs - organ system - humans Population - community - ecosystem - biosphere Prokaryote: is a single cell Eukaryote: it is us the people, organelles and membranes What distinguishes humans? Cultural heritage Thumbs Don’t walk on all four legs Science: is a way of knowing about the natural world Write about one of these topics and make it 1 - 2 pages. If Jesus was teaching your science class, what would he want you to learn about him? Or Write a letter to yourself from Jesus to you in the course. DAY 2: Cell theory: A cell is the basic unit of life All living things are made up of cells New cells arise from preexisting cells Microscopes - compound Lower magnification Uses light beams to view images Can view live specimens Transmission electron microscope ( TEM) Electrons Specific Cant be alive to view Scanning electron microscope (SEM) 3-D images Uses electrons High magnification, no live specimens Prokaryotic cells: Thought to be the first cells to evolve Lack of a nucleus Represented by bacteria and archaea Eukaryotic cells: Have a nucleus Many membranes
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Cells: Cell membrane DNA cytoplasm Organelles: Little organs Nucleus Houses the DNA Ribosomes Bond to the rough er, float in the cytoplasm SITE OF PROTEIN SYNTHESIS Smooth er Lacks ribosomes Makes lipids & carbohydrates Rough er Attached ribosomes to er make the protein Golgi Ups Packages & ships proteins / lipids/ carbohydrates Lysosomes Lys - to kill Digestive enzymes Mitochondria Cellular respiration Site of ATP synthesis “ Let everything that has breath praise the Lord.” does that apply to cells? Permeable Allows some things to move through it Diffusion H-> L Osmosis H-> L Only water Facilitated transport Is the transport of molecules across the plasma membrane from higher concentration to lower concentration Active transport Is the movement of molecules from a lower concentration to a higher concentration, using ATP as energy DAY 3: Tissues :
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Four types Connective Muscular Nervous Epithelial Connective Fibrous Loose dense fat Supportive cartilage bone hyaline Elastic fibrocartilage Fluid blood lymph compact spongy Fluid connective tissue: Blood Red blood cells White blood cells Platelets Muscular Skeletal Striated- means will be in a line Bone - muscle voluntary Smooth Lack striations Found in organs involuntary Cardiac Striated Found in the heart Involuntary Nervous Neurons Nerves
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Dendrites carry information to the cell Axons carry information away from the cell Neuroglia
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