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30 Cards in this Set
- Front
- Back
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7 Basic life Functions
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Nutrition, excretion, transport, respiration, growth, synthesis and regulation
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What do the basic life functions do?
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Maintain Homeostasis
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What makes up metabolism
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All life processes
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What happens if there is a failure to maintain hemeostasis?
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Disease and Death
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Autotrophs
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Make their own food (plants)
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Heterotrophs
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eat other organisms
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Photosynthesis
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carried out by plants, algea (autotrophs). Takes the energy of the sun makes it into sugar. Occurs mostly in the chlorplast of plant cells
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stomates
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small holes in leavs that allow for exchange of gases during photosynthesis.
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guard cells
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open and close stomates
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Respirations
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organisms get energy by breaking down sugar. The released energy makes ATP
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ATP
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Energy, gives all organisms their energy
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Aerobic Respirations
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Requires oxygen, uses more ATP
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anaerobic respiration
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no oxygen
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lactic acid
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when humans are forced to get energ from anaerobic respiration (the burn,while exercising)
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Photosynthesis vs. aerobic respiration
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Opposite reactions!!
Photosynthesis: puts out oxygen Aerobic respiration: puts out carbon dioxide |
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Tansport
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Diffusion
Active Transport Osmosis |
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Diffusion
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movement of molecules from high concentrations to low concentrations (requires no engery, passive)
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Active Transport
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requires the use of energy, usually moving molecules from a low concentration to a high concentration (against the flow of diffusion)
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Osmosis
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diffusion of water into or out of the cell.
into (bigger, burst) out of (shrivel up) |
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Regulation
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coordination and control of other life functions
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Stimulus
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Change in the environment that you respond to
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neuron
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nerve cell
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impulse
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electrical signal carried by the nerves.
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Neurotransmitters
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chemicals that help carry the impulse
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Hormone
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chemical signal secreted by different glands in the body: ex:insulin, adrenaline, testosterone and estrogen
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Receptor molecules
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Proteins on the surface of the cell membrane that receive signals from the nervous and endocrine system. Needed for cells to communicate and work together
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CHON
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Carbon
Hydrogen Oxygen Nitrogen Most common elements in living things |
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Organic Compounds
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Have CARBON and HYDROGEN
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Carbohydrates
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sugars and starches. made from simple sugars (glucose) and supply energy
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Lipids
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Store energy and include fats, oils and waxes. Made from fatty acids and glycerol
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