movement, reproduction, sensitivity, growth, respiration, excretion, and nutrition (MRS GREN)
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what is the classification pathway?
kingdom, phylum, classes, order, family, genus, species
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what are the 5 kingdoms?
bacteria, protoctists, fungi, plants, animals
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what are the characteristics of bacteria?
very small, single-celled, no nucleus
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what are the characteristics of protoctists?
single-celled, has a nucleus
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what are the characteristics of fungi?
cell walls contain chitin, has a nucleus
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what are the characteristics of plants?
multi-cellular, photosynthesis, nucleus
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what are the characteristics of animals?
multi-cellular, has a nucleus, no cell wall
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what is diffusion?
the net movement of particles from an area of high concentration to an area of lower concentration down a concentration gradient due to the random movement of particles
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what is osmosis?
the movement of water from a less concentrated solution to a more concentrated solution through a semi-permeable membrane
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what is active transport?
the movement of substances against a concentration gradient and/or across a cell membrane (from low concentration to high concentration)
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what is the function of ribosomes?
carries out protein synthesis
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what is the function of cytoplasm?
needed for chemical reactions
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what is the function of cell membrane?
controls the passage of substances in and out of the cell. It is selectively permeable
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what is the function of nucleus?
controls activity of the cell, carried genetic material
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what is the function of mitochondria?
where respiration takes place = releases energy
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what is the function of cellulose cell wall?
strengthens the cell, provides support
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what is the function of chloroplast?
where photosynthesis occurs, contains chlorophyll
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what is the function of permeable vacuole?
keeps the cell turgid
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what is movement?
an action by an organism or part of an organism causing a change of position or place
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what is respiration?
the chemical reactions in cells that break down nutrient molecules and release energy from metabolism
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what is sensitivity?
the ability ti detect or sense stimuli in the internal or external environment and to make appropriate reponses
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what is growth?
a permanent increase in size and dry mass by an increase in cell number or cell size or both
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what is reproduction?
the process that makes more of the same king of organism
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what is excretion?
the removal from organism s of the water products of metabolism, toxic materials and substances in excess of requirement
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what do classifications do?
makes the identification of living organisms easier
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factors that affect rate of diffusion are:
concentration gradient - steeper the gradient the faster diffusion will happen; temperature - the higher the temperature the faster the particles move because they have more energy
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what does the net movement of particles mean?
the overall amount of particles moving, particles in and particles out
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Other cards in this set
Card 2
Front
what is the classification pathway?
Back
kingdom, phylum, classes, order, family, genus, species
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