objective 1. parts of a microscope arm - this attaches the eyepiece and body tube to the base....
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Standard 3
Objective 1
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Students will understand that the organs in an organism are made of cells that have structures and perform specific life functions. Objective 1: Observe and describe cellular structures and functions.
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a. Use appropriate instruments to observe, describe, and compare various types of cells (e.g., onion, diatoms).
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Parts of a microscope• arm-thisattachestheeyepieceandbody
tubetothebase.• base-thissupportsthemicroscope.• body tube-thetubethatsupportstheeyepiece.
• coarse focus adjustment-aknobthatmakeslargeadjustmentstothefocus.
• diaphragm-anadjustableopeningunderthestage,allowingdifferentamountsoflightontothestage.
• eyepiece-whereyouplaceyoureye.• fine focus adjustment-aknobthatmakessmalladjustmentstothefocus(itisoftensmallerthanthecoarsefocusknob).
• high-power objective-alargelenswithhighmagnifyingpower.• low-power objective-asmalllenswithlowmagnifyingpower.• light source-thisdirectslightupwardsontotheslide.• revolving nosepiece-therotatingdevicethatholdstheobjectives(lenses).• stage-theplatformonwhichaslideisplaced.• stage clips-metalclipsthatholdaslidesecurelyontothestage.
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Recognize cell wall, nucleus and cytoplasm of various types of cells.
Leeuwenhoek developed first microscope.
Hooke was first to see and name cells using his microscope.
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b. Observe and distinguish the cell wall, cell membrane, nucleus, chloroplast, and cytoplasm of cells.
Cell: Basic unit of all living things. Two types of cells: prokaryotic (don’t have membrane-bound nucleus) and eukaryotic (plant and animal cells, have membrane-bound nucleus)
Recognize key organelles in various cells (cell wall, cell membrane, nucleus, chloroplast, cytoplasm, vacuole).
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Chloroplast
Cell Membrane
Cell Wall
Mitochondria
Nucleus
Vacuole Ribosomes
Endoplasmic Reticulum
Golgi Body
Plant Cell
Cytoplasm
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Animal CellCell Membrane
Mitochondria
Nucleus
Ribosomes
Endoplasmic Reticulum
Golgi Body
Cytoplasm
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c. Differentiate between plant and animal cells based on cell wall and cell membrane. Plant cells have cell walls, animal cells do not have cell walls.
Both plant cells and animal cells have cell membranes.
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d. Model the cell processes of diffusion and osmosis and relate this motion to the motion of particles.
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Diffusion is particles moving from a higher concentration to a lower concentration.
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Osmosis is water moving from a higher concentration to a lower concentration across a membrane to maintain the correct balance in a cell.
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Examples of Diffusion & OsmosisDiffusion: Think about food coloring moving in water, or air freshener sprayed in a room.
Osmosis: Remember the potatoes and carrots in salt water.
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e. Gather information to report on how the basic functions of organisms are carried out within cells (e.g., extract energy from food, remove waste, produce their own food).
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Nucleus directs all functions of the cell, control center – has DNA.
Vacuole holds water and eliminates wastes in a plant cell.
Chloroplasts are where energy is generated in a plant cell through photosynthesis.
Cell membrane controls what goes into and out of a cell.
Cell wall- protects cell and gives cell structure.
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Standard 3
Objective 2
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Students will understand that the organs in an organism are made of cells that have structures and perform specific life functions. Objective 2: Identify and describe the function and interdependence of various organs and tissues.
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a. Order the levels of organization from simple to complex (e.g., cell, tissue, organ, system, organism).
Cells make tissues, tissues make organs, organs make organ systems, organ systems make organisms
Cells are the most simple, organisms are most complex
Levels of Organization, from least complex to most complex: cells-tissues-organs-organ systems- organism
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Cells
Cell: Basic unit of all living things.
Two types of cells: Prokaryote: Don’t have membrane-bound nucleus.
Eukaryote: plant and animal cells, have membrane-bound organelles
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TissueTissue: Group of the same kind of cells working together.
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Organ
Organ: Structure composed of two or more types of tissues working together.
Examples include the stomach, intestines, heart, lungs, skin, bones, kidneys and liver.
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Organ system
Organ system: Group of organs that work together to do a certain job.
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Integumentary SystemMade up of: skin, hairExterior protection
Respiratory SystemMade up of: lungs, trachea, diaphragm
Take in oxygen (O2), release carbon dioxide (CO2)
Digestive SystemMade up of: stomach, intestines
Breaks down food-nutrients
Skeletal SystemMade up of: skeletonStructure and support
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Muscular SystemMade up of: musclesMovement
Nervous SystemMade up of: brain, sense organs, nerves
Carry and interpret messages
Endocrine SystemMade up of: thyroid, pituitary
Regulate hormones
Circulatory SystemMade up of: heart, arteriesCirculate blood
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Immune & Lymphatic SystemMade up of: Appendix, lymph nodes
Maintain health
Reproductive SystemMade up of: testes, ovariesProduce offspring
Excretory SystemMade up of: kidney, colonRemove waste
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Organism
Organism: Individual living thing that may be made up of two or more organ systems.
Characteristics of life include movement, growth and development, reproduction, use of energy, cellular structure and chemical makeup, response to stimuli, get rid of wastes
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b. Match a particular structure to the appropriate level (e.g., heart to organ, cactus to organism, muscle to tissue). Common organs are heart, lung, skin, kidney.Cells are red blood cell, nerve cell, plant cell, muscle cell.
Organ systems (digestive system, respiratory system, circulatory system).
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Levels of organization
Red Blood CellEpithelialLiverDogRespiratory System
OrganismOrganCellOrgan SystemTissue
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c. Relate the structure of an organ to its component parts and the larger system of which it is a part.
Organ systems are made of individual organs that work together towards a common function
Organ systems work together for survival of organism
Example: circulatory system: heart, veins, arteries, and blood
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d. Describe how the needs of organisms at the cellular level for food, air, and waste removal are met by tissues and organs (e.g., lungs provide oxygen to cells, kidneys remove wastes from cells).
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Lungs provide oxygen to cells, remove carbon dioxide from body
Kidneys remove wastes from cells Stomach breaks down food to provide nutrients to cells
Skin protect organism from outside, sweat removes wastes through the pores