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32 Cards in this Set
- Front
- Back
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Levels of Organization
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Subatomic Particles, Atom, Molecule, Macromolecule, Organelle, Cell, Tissue, Organ, Organ System, Organism
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Subatomic Particles
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Electrons, Protons, Neutrons
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Atom
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Hydrogen Atom, lithium atom
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Molecule
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Water molecule, glucose molecule
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Macromolecule
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Protein molecule, DNA molecule
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Organelle
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Mitochondrion, Golgi Apparatus, nucleus
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Cell
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Muscle cell, nerve cell
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Tissue
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Simple squamos epithelium, bone
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Organ
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Skin, femur, heart, kidney
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Organ System
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Integumentary system, skeletal system, digestive system
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Organism
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Human
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Characteristics of Life (ten)
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1. Movement, 2. Responsiveness, 3. Growth, 4. Reproduction, 5. Respiration, 6. Digestion, 7. Absorption, 8. Circulation, 9. Assimilation, 10. Excretion
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Movement
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Change in position of the body or of a body part; motion of an internal organ
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Responsiveness
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Reaction to a change inside or outside the body
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Growth
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Increase in body size without change in shape
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Reproduction
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Production of new organisms and new cells
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Respiration
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Obtaining oxygen, removing carbon dioxide, and releasing energy from foods)
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Digestion
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Breakdown of food substances into simpler forms that can be absorbed and used
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Absorption
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Passage of substances through membranes and into body fluids
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Circulation
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Movement of substances in body fluids
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Assimilation
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Changing of absorbed substances into different chemical forms
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Excretion
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Removal of wastes produced by metabolic reactions
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Requirements of Organisms (five)
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Water, Food, Oxygen, Heat, Pressure
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Homeostasis
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The body's ability to keep its internal conditions stable, so that it's cells can survive
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Homeostatic mechanisms
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Receptors, Control Center, Effectors
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Receptors
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Provide information about specific conditions(stimuli) in the internal environment
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Control Center
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Decision-maker, includes a set point, such as body temperature
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Effectors
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Muscles or glands. They cause appropriate responses
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Negative Feedback |
deviation from set point is corrected; moves in opposite or negative direction (ex. blood sugar) |
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Positive feedback |
a change is not reversed but intensified (ex. blood clotting, ex. going into labor) |
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Homeostasis mechanism (function chart) |
Stimulation-->Receptors-->Control Center (set point)-->Effectors(muscles or glands)-->Responsee (change is corrected) |
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Components of Homeostasis mechanism |
1. Receptors, 2. Control Center, 3. Effectors |
