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Creado por Charlotte Hewson
hace más de 9 años
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Pregunta | Respuesta |
what are similar cells grouped together to form? | tissues |
what are tissues grouped together to form? | organs |
what are organs combined to form? | systems |
what is cell differentiation? | each cell becomes specialised in structure to suit its function |
how does a cell differentiate? | every cell contains the genes needed for it to develop into any one kind, but only a few of these genes are turned on, the rest are switched off. |
what is the term for when a gene is switched on? | expressed |
along with the shape of a cell, what does differentiation also vary? | the number of each organelles |
give an example of two cells containing different numbers of organelles | sperm cell = lots of mitochondria bone cell = very few mitochondria |
what is a tissue? | a collection of similar cells that perform a specific function |
what are two examples of tissues? | - epithelial tissues -xylem |
what is an organ made up off? | a combination of tissues that perform different functions |
which blood vessels are considered organs? | veins and arteries |
which blood vessel is not considered an organ? | capillaries |
what are three systems? | -digestive system -respiratory system -circulatory system |
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