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what’s the function of a muscle cell
contraction
how is a muscle cell specialised?
very long (have space to contract) contain lots of mitochondria to generate energy needed for contraction
what’s the function of a root hair cell?
absorbing water and minerals
how are root hair cells specialised
give the plant a large surface area (to absorb lots of water), thin cell wall (for water to pass through), large vacuole (storing water)
what’s the function of sperm cells
reproduction - get male DNA to the female
how are sperm cells specialised
long flagellum and streamlined head to help it swim into the egg, lots of mitochondria to provide it with energy, carries enzymes in its head to digest through the egg cell membrane
what’s the function of a nerve cell?
to carry electrical signals from one part of the body to another
how are nerve cells specialised
elongated cells, have branched connections at their ends to connect to other nerve cells and form a network throughout the body
what’s the function of a xylem cell
to transport water and minerals from the roots up the plant stem into the leaves
how is the xylem cell specialised
xylem cells are hollow in the centre so that stuff can flow through, strengthen by lignin, cells are long to form tubes
what’s the function of the phloem cell
to transport food substances that the plant has produced by photosynthesis to where they are needed
how are phloem cells specialised
contain sieve tubes that have few organelles to leave a large hollow tube for transport, cytoplasm of one sieve tube connects to the next, companion cells provide the energy to transport substances
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